504 WUUS53 KARX 182003 SVRARX MNC055-WIC063-123-182100- /O.NEW.KARX.SV.W.0180.260818T2003Z-260818T2100Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service La Crosse WI 303 PM CDT Tue Aug 18 2026 The National Weather Service in La Crosse has issued a * Severe Thunderstorm Warning for... Northeastern Houston County in southeastern Minnesota... Southeastern La Crosse County in west central Wisconsin... Northwestern Vernon County in southwestern Wisconsin... * Until 400 PM CDT. * At 302 PM CDT, severe thunderstorms were located along a line extending from near Holmen to 7 miles west of Dakota, moving southeast at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. WInds to 50 mph have been reported with this storm. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Severe thunderstorms will be near... La Crosse, Onalaska, La Crosse Airport, and French Island around 305 PM CDT. La Crescent and West Salem around 310 PM CDT. Hokah around 315 PM CDT. Bangor and Brownsville around 325 PM CDT. Coon Valley around 340 PM CDT. Other locations impacted by these severe thunderstorms include County Roads G And H, Brinkman Ridge, Irish Hill, North Side Of La Crosse, South Side Of La Crosse, Goose Island, and Highways 14 61 And County M M. This includes Interstate 90 in Wisconsin between mile markers 1 and 20. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4363 9112 4373 9131 4385 9142 4385 9129 4397 9118 4393 9091 4373 9091 TIME...MOT...LOC 2002Z 319DEG 26KT 4399 9121 4389 9150 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Skow  625 WHUS52 KMLB 182003 SMWMLB AMZ572-182100- /O.NEW.KMLB.MA.W.0233.260818T2003Z-260818T2100Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Melbourne FL 403 PM EDT Tue Aug 18 2026 The National Weather Service in Melbourne has issued a * Special Marine Warning for... Volusia-Brevard County Line to Sebastian Inlet 20-60 nm... * Until 500 PM EDT. * At 403 PM EDT, a strong thunderstorm was located 20 nm east of Indialantic, moving southeast at 20 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Expect wind gusts in excess of 34 knots, suddenly higher waves, lightning and heavy downpours. Make sure all on board are wearing life jackets. Return to safe harbor if possible. * The strong thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to water lightning is occurring with this storm. If caught on the open water stay below deck and, if possible, avoid ungrounded metal objects. Remember, lightning can strike beyond 10 miles away from a thunderstorm. && LAT...LON 2792 7994 2818 8025 2823 8026 2827 8026 2831 8023 2831 7968 TIME...MOT...LOC 2003Z 294DEG 21KT 2821 8021 HAIL...0.00IN WIND...>34KTS $$ Watson  316 WWUS53 KARX 182004 SVSARX Severe Weather Statement National Weather Service La Crosse WI 304 PM CDT Tue Aug 18 2026 MNC109-182014- /O.CAN.KARX.SV.W.0179.000000T0000Z-260818T2030Z/ Olmsted MN- 304 PM CDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OLMSTED COUNTY IS CANCELLED... The severe thunderstorm which prompted the warning has moved out of the warned area. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for southeastern Minnesota. && LAT...LON 4402 9207 4404 9183 4385 9172 4384 9173 4381 9173 4381 9204 4385 9208 TIME...MOT...LOC 2004Z 285DEG 21KT 4395 9201 $$ MNC045-169-182030- /O.CON.KARX.SV.W.0179.000000T0000Z-260818T2030Z/ Winona MN-Fillmore MN- 304 PM CDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR SOUTHWESTERN WINONA AND NORTHEASTERN FILLMORE COUNTIES... At 304 PM CDT, a severe thunderstorm was located over St. Charles, or 18 miles west of Winona, moving east at 25 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Trained weather spotters. Quarter size hail has been reported with this storm. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. This severe storm will be near... Lewiston around 315 PM CDT. Other locations impacted by this severe thunderstorm include Saratoga, Arendahl, County Roads 6 And 33, Pilot Mound, Wyattville, Utica, and Bethany. This includes Interstate 90 in Minnesota between mile markers 233 and 248. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4402 9207 4404 9183 4385 9172 4384 9173 4381 9173 4381 9204 4385 9208 TIME...MOT...LOC 2004Z 285DEG 21KT 4395 9201 HAIL THREAT...OBSERVED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Skow  018 FZUS71 KLWX 182005 MWSLWX Marine Weather Statement National Weather Service Baltimore MD/Washington DC 405 PM EDT Tue Aug 18 2026 ANZ533-534-537-542-182130- 405 PM EDT Tue Aug 18 2026 ...A SHOWER APPROACHING THE WATERS... The areas affected include... Chesapeake Bay from Drum Point MD to Smith Point VA... Chesapeake Bay from North Beach to Drum Point MD... Patuxent River to Broomes Island MD... Tidal Potomac from Cobb Island MD to Smith Point VA... At 404 PM EDT, Doppler radar indicated a shower, capable of producing winds to around 30 knots. This shower was located near Solomons Island, moving southeast at 10 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots and locally higher waves. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 3813 7649 3807 7633 3809 7633 3825 7642 3829 7640 3828 7646 3829 7648 3824 7656 3821 7657 3823 7659 3824 7657 3830 7648 3839 7658 3842 7652 3834 7643 3837 7641 3818 7612 3798 7634 $$ KJP  344 WWUS53 KARX 182007 SVSARX Severe Weather Statement National Weather Service La Crosse WI 307 PM CDT Tue Aug 18 2026 WIC121-182016- /O.CAN.KARX.SV.W.0178.000000T0000Z-260818T2015Z/ Trempealeau WI- 307 PM CDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL TREMPEALEAU COUNTY IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for southeastern Minnesota...and west central Wisconsin. && LAT...LON 4390 9108 4385 9124 4385 9142 4395 9145 4398 9138 4399 9132 4401 9134 4404 9128 TIME...MOT...LOC 2006Z 313DEG 30KT 4397 9123 4388 9142 $$ MNC169-WIC063-182015- /O.CON.KARX.SV.W.0178.000000T0000Z-260818T2015Z/ Winona MN-La Crosse WI- 307 PM CDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR SOUTHEASTERN WINONA AND NORTHWESTERN LA CROSSE COUNTIES... At 306 PM CDT, severe thunderstorms were located along a line extending from Holmen to near Dakota, moving southeast at 35 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. These severe storms will be near... La Crosse, Onalaska, Holmen, Dakota, La Crosse Airport, Brice Prairie, and French Island around 310 PM CDT. West Salem around 315 PM CDT. Other locations impacted by these severe thunderstorms include County Roads M And W, Dresbach, North Side Of La Crosse, New Amsterdam, The Valley View Mall, Nathan Hill, and Veterans Memorial Park. This includes the following highways... Interstate 90 in Minnesota between mile markers 267 and 276. Interstate 90 in Wisconsin between mile markers 1 and 7. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4390 9108 4385 9124 4385 9142 4395 9145 4398 9138 4399 9132 4401 9134 4404 9128 TIME...MOT...LOC 2006Z 313DEG 30KT 4397 9123 4388 9142 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Skow  129 WWUS53 KARX 182008 SVSARX Severe Weather Statement National Weather Service La Crosse WI 308 PM CDT Tue Aug 18 2026 IAC043-WIC043-182030- /O.CON.KARX.SV.W.0177.000000T0000Z-260818T2030Z/ Clayton IA-Grant WI- 308 PM CDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR SOUTHEASTERN CLAYTON AND WEST CENTRAL GRANT COUNTIES... At 308 PM CDT, a severe thunderstorm was located over Guttenberg, moving southeast at 25 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. This severe thunderstorm will remain over mainly rural areas of southeastern Clayton and west central Grant Counties, including the following locations... Lock And Dam 10, Glen Haven, County Roads X 47 And C 7 X, Osterdock, and Millville. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4276 9123 4283 9118 4284 9098 4269 9109 TIME...MOT...LOC 2008Z 299DEG 22KT 4277 9110 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Skow  665 WWUS53 KARX 182010 SVSARX Severe Weather Statement National Weather Service La Crosse WI 310 PM CDT Tue Aug 18 2026 MNC045-169-182030- /O.CON.KARX.SV.W.0179.000000T0000Z-260818T2030Z/ Winona MN-Fillmore MN- 310 PM CDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR SOUTHWESTERN WINONA AND NORTHEASTERN FILLMORE COUNTIES... At 310 PM CDT, a severe thunderstorm was located 7 miles south of Lewiston, or 16 miles northeast of Preston, moving southeast at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Trained weather spotters. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. This severe storm will be near... Rushford around 320 PM CDT. Other locations impacted by this severe thunderstorm include Arendahl, County Roads 6 And 33, Wyattville, Fremont, and Rushford Village. This includes Interstate 90 in Minnesota between mile markers 235 and 248. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4394 9207 4400 9181 4385 9172 4384 9173 4381 9173 4381 9198 4393 9208 TIME...MOT...LOC 2010Z 292DEG 24KT 4387 9190 HAIL THREAT...OBSERVED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Skow  697 FZUS73 KGRB 182011 MWSGRB Marine Weather Statement National Weather Service Green Bay WI 311 PM CDT Tue Aug 18 2026 LMZ521-182145- /O.CON.KGRB.MA.W.0052.000000T0000Z-260818T2145Z/ 311 PM CDT Tue Aug 18 2026 ...SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 445 PM CDT... For the following areas... Central Bay of Green Bay... At 311 PM CDT, severe thunderstorms were located along a line from 13 NM northwest of Chambers Island to over Marinette, moving east at 30 knots. HAZARD...Large hail and wind gusts to 34 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. The strong thunderstorm will be near... Marinette around 315 PM CDT. Chambers Island around 330 PM CDT. Eagle Bluff Light and Egg Harbor around 340 PM CDT. Sister Bay around 345 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4529 8698 4530 8707 4525 8708 4526 8711 4519 8712 4518 8717 4515 8717 4517 8724 4505 8728 4504 8732 4497 8737 4499 8763 4509 8759 4508 8759 4507 8758 4515 8760 4529 8744 4541 8735 4541 8695 4535 8694 TIME...MOT...LOC 1945Z 267DEG 31KT 4536 8787 4524 8789 4512 8795 MAX HAIL SIZE...>.75 IN MAX WIND GUST...34 KTS $$ Kurimski  918 WUUS55 KBYZ 182012 SVRBYZ MTC087-182115- /O.NEW.KBYZ.SV.W.0136.260818T2012Z-260818T2115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Billings MT 212 PM MDT Tue Aug 18 2026 The National Weather Service in Billings has issued a * Severe Thunderstorm Warning for... Northern Rosebud County in southeastern Montana... * Until 315 PM MDT. * At 212 PM MDT, a severe thunderstorms were located 28 miles northwest of Forsyth, or 28 miles northeast of Hysham, moving southeast at 25 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Mainly rural areas of Northern Rosebud County. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. Continuous cloud to ground lightning is occurring with this storm. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. && LAT...LON 4660 10710 4681 10677 4663 10627 4636 10674 TIME...MOT...LOC 2011Z 285DEG 18KT 4663 10693 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Tesar  466 WWUS55 KBYZ 182012 SVSBYZ Severe Weather Statement National Weather Service Billings MT 212 PM MDT Tue Aug 18 2026 MTC087-182022- /O.EXP.KBYZ.SV.W.0135.000000T0000Z-260818T2015Z/ Rosebud MT- 212 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WARNING WILL EXPIRE AT 215 PM MDT FOR NORTH CENTRAL ROSEBUD COUNTY... The Severe Thunderstorm Warning that was previously in effect has been reissued for Rosebud County and is in effect until 315 PM MDT. Please refer to that bulletin for the latest severe weather information. && LAT...LON 4686 10692 4678 10674 4658 10702 4686 10731 TIME...MOT...LOC 1954Z 301DEG 19KT 4681 10704 $$ Tesar  172 WWUS53 KARX 182014 SVSARX Severe Weather Statement National Weather Service La Crosse WI 314 PM CDT Tue Aug 18 2026 IAC043-WIC043-182024- /O.CAN.KARX.SV.W.0177.000000T0000Z-260818T2030Z/ Clayton IA-Grant WI- 314 PM CDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CLAYTON AND WEST CENTRAL GRANT COUNTIES IS CANCELLED... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning has been cancelled. However, small hail and gusty winds are still possible with this thunderstorm. A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for northeastern Iowa...and southwestern Wisconsin. && LAT...LON 4276 9123 4283 9118 4284 9098 4269 9109 TIME...MOT...LOC 2013Z 285DEG 12KT 4276 9107 $$ Skow  920 WUUS52 KJAX 182014 SVRJAX FLC019-031-107-109-182100- /O.NEW.KJAX.SV.W.0205.260818T2014Z-260818T2100Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Jacksonville FL 414 PM EDT Tue Aug 18 2026 The National Weather Service in Jacksonville has issued a * Severe Thunderstorm Warning for... Central St. Johns County in northeastern Florida... North central Putnam County in northeastern Florida... Northeastern Clay County in northeastern Florida... Southeastern Duval County in northeastern Florida... * Until 500 PM EDT. * At 414 PM EDT, severe thunderstorms were located along a line extending from Bayard to near Fleming Island, moving southeast at 15 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Orange Park, Green Cove Springs, Mandarin, Fruit Cove, World Golf Village, Fleming Island, Nocatee, Durbin, Vilano Beach, and Picolata. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 2975 8176 3013 8190 3023 8159 3023 8142 2992 8127 TIME...MOT...LOC 2014Z 332DEG 15KT 3012 8153 3007 8175 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ HESS  667 WWUS53 KGRB 182017 SVSGRB Severe Weather Statement National Weather Service Green Bay WI 317 PM CDT Tue Aug 18 2026 WIC075-182027- /O.CAN.KGRB.SV.W.0136.000000T0000Z-260818T2030Z/ Marinette WI- 317 PM CDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR CENTRAL MARINETTE COUNTY... The storm which prompted the warning has moved out of the area. Therefore, the warning has been cancelled. && LAT...LON 4516 8796 4532 8795 4535 8786 4534 8785 4535 8783 4535 8776 4537 8773 4537 8767 4535 8765 4534 8765 4529 8769 4527 8770 4526 8771 4524 8771 4523 8773 4521 8773 4520 8774 4517 8774 4515 8770 TIME...MOT...LOC 1956Z 270DEG 24KT 4524 8787 $$  059 WWUS53 KARX 182020 SVSARX Severe Weather Statement National Weather Service La Crosse WI 320 PM CDT Tue Aug 18 2026 MNC055-WIC063-123-182100- /O.CON.KARX.SV.W.0180.000000T0000Z-260818T2100Z/ Houston MN-La Crosse WI-Vernon WI- 320 PM CDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR NORTHEASTERN HOUSTON...SOUTHEASTERN LA CROSSE AND NORTHWESTERN VERNON COUNTIES... At 320 PM CDT, severe thunderstorms were located along a line extending from near West Salem to La Crescent, moving southeast at 45 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Trained weather spotters. 65 mph winds and quarter size hail have been reported by spotters with this storm. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. These severe storms will be near... La Crosse and Bangor around 325 PM CDT. Coon Valley around 335 PM CDT. Other locations impacted by these severe thunderstorms include County Roads G And H, Brinkman Ridge, Irish Hill, North Side Of La Crosse, South Side Of La Crosse, Goose Island, and Highways 14 61 And County M M. This includes Interstate 90 in Wisconsin between mile markers 1 and 20. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4363 9112 4381 9133 4385 9129 4397 9118 4393 9091 4373 9091 TIME...MOT...LOC 2020Z 313DEG 37KT 4391 9104 4381 9129 HAIL THREAT...OBSERVED MAX HAIL SIZE...1.00 IN WIND THREAT...OBSERVED MAX WIND GUST...60 MPH $$ Skow  528 WWUS53 KARX 182022 SVSARX Severe Weather Statement National Weather Service La Crosse WI 322 PM CDT Tue Aug 18 2026 MNC045-169-182032- /O.EXP.KARX.SV.W.0179.000000T0000Z-260818T2030Z/ Winona MN-Fillmore MN- 322 PM CDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WINONA AND NORTHEASTERN FILLMORE COUNTIES WILL EXPIRE AT 330 PM CDT... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning will be allowed to expire. However, small hail, gusty winds and heavy rain are still possible with this thunderstorm. A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for southeastern Minnesota. && LAT...LON 4394 9207 4400 9181 4385 9172 4384 9173 4381 9173 4381 9198 4393 9208 TIME...MOT...LOC 2022Z 284DEG 20KT 4385 9181 $$ Skow  113 WHUS52 KJAX 182027 SMWJAX AMZ452-454-472-182130- /O.NEW.KJAX.MA.W.0200.260818T2027Z-260818T2130Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Jacksonville FL 427 PM EDT Tue Aug 18 2026 The National Weather Service in Jacksonville has issued a * Special Marine Warning for... Coastal waters from Fernandina Beach to St. Augustine FL out 20 NM... Coastal waters from St. Augustine to Flagler Beach FL out 20 NM... Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM... * Until 530 PM EDT. * At 427 PM EDT, severe thunderstorms capable of producing waterspouts were located along a line extending from 11 nm east of Jacksonville Beach to near Guana River State Park, moving southeast at 15 knots. HAZARD...Waterspouts, wind gusts to 40 knots, and small hail. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... Dorothy Louise Barge, Nine Mile Reef, Saint Augustine, Saint Augustine Beach, Crescent Beach, Butler Beach, Vilano Beach, Marineland, South Ponte Vedra Beach, Guana River State Park, Palm Valley, and Palm Coast. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. If your vessel is caught offshore, immediately secure for heavy weather. Ensure all crew members are wearing USCG approved Type I life jackets and nonessential crew are below decks. Deploy jack lines and harnesses if available. Check life saving equipment, including batteries on handheld radios, for readiness. && LAT...LON 2958 8124 2963 8125 2967 8128 2973 8128 2982 8136 3009 8140 3013 8142 3037 8124 3003 8071 2991 8086 2991 8094 2985 8092 TIME...MOT...LOC 2027Z 325DEG 13KT 3026 8119 3005 8139 WATERSPOUT...POSSIBLE HAIL...<.75IN WIND...40KTS $$ HESS  006 FZUS72 KMLB 182028 MWSMLB Marine Weather Statement National Weather Service Melbourne FL 428 PM EDT Tue Aug 18 2026 AMZ555-575-182130- 428 PM EDT Tue Aug 18 2026 A Marine Weather Statement has been issued for the following areas... Sebastian Inlet to Jupiter Inlet 0-20 nm... Sebastian Inlet to Jupiter Inlet 20-60 nm... At 428 PM EDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots. This thunderstorm was located near Indian River Shores, moving east at 20 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 2737 8030 2783 8049 2791 8000 2739 7982 $$ Weitlich  229 WUUS55 KGGW 182028 SVRGGW MTC033-069-182130- /O.NEW.KGGW.SV.W.0123.260818T2028Z-260818T2130Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Glasgow MT 228 PM MDT Tue Aug 18 2026 The National Weather Service in Glasgow has issued a * Severe Thunderstorm Warning for... Southeastern Petroleum County in northeastern Montana... Southwestern Garfield County in northeastern Montana... * Until 330 PM MDT. * At 228 PM MDT, a severe thunderstorm was located 10 miles east of Flatwillow, or 12 miles southeast of Winnett, moving southeast at 20 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Petrolia Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4675 10821 4689 10845 4707 10819 4685 10772 4685 10789 4682 10785 4681 10785 4680 10784 4680 10785 4679 10784 4678 10785 4676 10783 TIME...MOT...LOC 2028Z 302DEG 18KT 4686 10819 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Stoinski  361 WHUS52 KTAE 182029 SMWTAE GMZ730-755-765-775-182230- /O.NEW.KTAE.MA.W.0296.260818T2029Z-260818T2230Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Tallahassee FL 429 PM EDT Tue Aug 18 2026 The National Weather Service in Tallahassee has issued a * Special Marine Warning for... Apalachee Bay or Coastal Waters From Keaton Beach to Ochlockonee River Fl out to 20 Nm... Coastal Waters From Ochlockonee River to Apalachicola FL out to 20 Nm... Coastal waters from Suwannee River to Keaton Beach out 20 NM... Waters from Suwannee River to Apalachicola FL from 20 to 60 NM... * Until 630 PM EDT. * At 428 PM EDT, strong thunderstorms were located along a line extending from 17 nm east of St. Marks to near Marker 24 Barge to 9 nm north of K Tower, moving southeast at 25 knots. HAZARD...Wind gusts to nearly 50 knots. SOURCE...Radar indicated. IMPACT...Expect wind gusts in excess of 34 knots...suddenly higher waves...frequent lightning...and heavy downpours. Make sure all on board are wearing life jackets. * Locations impacted include... Buckeye Reef, K Tower, and Marker 24 Barge. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. Frequent lightning is occurring with these storms. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && LAT...LON 2937 8361 2919 8419 2975 8446 2988 8409 3007 8387 2983 8354 2978 8353 2972 8342 TIME...MOT...LOC 2028Z 316DEG 24KT 3006 8389 2985 8409 2983 8435 HAIL...0.00IN WIND...49KTS $$ 02-MONTGOMERY  205 FZUS71 KLWX 182030 MWSLWX Marine Weather Statement National Weather Service Baltimore MD/Washington DC 430 PM EDT Tue Aug 18 2026 ANZ537-182130- 430 PM EDT Tue Aug 18 2026 ...A SHOWER APPROACHING THE WATERS... The areas affected include... Tidal Potomac from Cobb Island MD to Smith Point VA... At 429 PM EDT, Doppler radar indicated a shower, capable of producing winds to around 30 knots. This shower was located over Saint Clements Bay, moving southeast at 10 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots and locally higher waves. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 3811 7660 3815 7661 3816 7672 3825 7685 3827 7683 3823 7658 3815 7652 3812 7645 3809 7658 $$ KJP  826 WHUS52 KMHX 182030 SMWMHX AMZ135-152-182130- /O.NEW.KMHX.MA.W.0304.260818T2030Z-260818T2130Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Newport/Morehead City NC 430 PM EDT Tue Aug 18 2026 The National Weather Service in Newport has issued a * Special Marine Warning for... Pamlico Sound... S of Oregon Inlet NC to Cape Hatteras NC out to 20 NM... * Until 530 PM EDT. * At 430 PM EDT, a severe thunderstorm capable of producing waterspouts was located 8 nm northeast of Pamlico Sound, moving southeast at 10 knots. HAZARD...Waterspouts and wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. * The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. Frequent lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && LAT...LON 3550 7580 3564 7568 3547 7532 3524 7551 TIME...MOT...LOC 2030Z 305DEG 10KT 3551 7568 WATERSPOUT...POSSIBLE HAIL...0.00IN WIND...>34KTS $$ Simms  474 FZUS72 KMLB 182032 MWSMLB Marine Weather Statement National Weather Service Melbourne FL 432 PM EDT Tue Aug 18 2026 AMZ572-182042- /O.CAN.KMLB.MA.W.0233.000000T0000Z-260818T2100Z/ 432 PM EDT Tue Aug 18 2026 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Volusia-Brevard County Line to Sebastian Inlet 20-60 nm... The thunderstorm has weakened and no longer poses a significant threat to boaters. && LAT...LON 2792 7994 2818 8025 2823 8026 2827 8026 2831 8023 2831 7968 TIME...MOT...LOC 2029Z 294DEG 21KT 2814 8003 $$ Weitlich  342 WWUS52 KJAX 182033 SVSJAX Severe Weather Statement National Weather Service Jacksonville FL 433 PM EDT Tue Aug 18 2026 FLC031-182043- /O.CAN.KJAX.SV.W.0205.000000T0000Z-260818T2100Z/ Duval FL- 433 PM EDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DUVAL COUNTY IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. && LAT...LON 2975 8176 3010 8189 3013 8169 3012 8168 3013 8160 3012 8157 3012 8154 3010 8154 3010 8145 3011 8144 3014 8144 3013 8137 2992 8127 TIME...MOT...LOC 2033Z 332DEG 15KT 3006 8149 3001 8171 $$ FLC019-107-109-182100- /O.CON.KJAX.SV.W.0205.000000T0000Z-260818T2100Z/ St. Johns FL-Putnam FL-Clay FL- 433 PM EDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR CENTRAL ST. JOHNS...NORTH CENTRAL PUTNAM AND NORTHEASTERN CLAY COUNTIES... At 433 PM EDT, severe thunderstorms were located along a line extending from near Durbin to near Green Cove Springs, moving southeast at 15 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Green Cove Springs, Fruit Cove, World Golf Village, Fleming Island, Nocatee, Durbin, Vilano Beach, Picolata, Switzerland, and South Ponte Vedra. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 2975 8176 3010 8189 3013 8169 3012 8168 3013 8160 3012 8157 3012 8154 3010 8154 3010 8145 3011 8144 3014 8144 3013 8137 2992 8127 TIME...MOT...LOC 2033Z 332DEG 15KT 3006 8149 3001 8171 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ HESS  626 WWUS53 KARX 182034 SVSARX Severe Weather Statement National Weather Service La Crosse WI 334 PM CDT Tue Aug 18 2026 MNC055-182044- /O.CAN.KARX.SV.W.0180.000000T0000Z-260818T2100Z/ Houston MN- 334 PM CDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HOUSTON COUNTY IS CANCELLED... The storms which prompted the warning have moved out of the warned area. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for southwestern and west central Wisconsin. && LAT...LON 4363 9112 4374 9124 4387 9119 4394 9097 4393 9091 4373 9091 TIME...MOT...LOC 2034Z 319DEG 26KT 4384 9096 4374 9121 $$ WIC063-123-182100- /O.CON.KARX.SV.W.0180.000000T0000Z-260818T2100Z/ La Crosse WI-Vernon WI- 334 PM CDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR SOUTHEASTERN LA CROSSE AND NORTHWESTERN VERNON COUNTIES... At 334 PM CDT, severe thunderstorms were located along a line extending from near Bangor to near Brownsville, moving southeast at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Trained weather spotters. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. These severe storms will be near... Coon Valley around 340 PM CDT. Other locations impacted by these severe thunderstorms include Mount La Crosse, County Roads G And H, Brinkman Ridge, Irish Hill, South Side Of La Crosse, Goose Island, and The Valley View Mall. This includes Interstate 90 in Wisconsin between mile markers 7 and 20. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4363 9112 4374 9124 4387 9119 4394 9097 4393 9091 4373 9091 TIME...MOT...LOC 2034Z 319DEG 26KT 4384 9096 4374 9121 HAIL THREAT...OBSERVED MAX HAIL SIZE...1.00 IN WIND THREAT...OBSERVED MAX WIND GUST...60 MPH $$ Skow  692 WWUS52 KJAX 182039 SVSJAX Severe Weather Statement National Weather Service Jacksonville FL 439 PM EDT Tue Aug 18 2026 FLC019-107-109-182049- /O.CAN.KJAX.SV.W.0205.000000T0000Z-260818T2100Z/ St. Johns FL-Putnam FL-Clay FL- 439 PM EDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ST. JOHNS...NORTH CENTRAL PUTNAM AND NORTHEASTERN CLAY COUNTIES IS CANCELLED... The storms which prompted the warning have weakened below severe limits, and no longer pose an immediate threat to life or property. Therefore, the warning has been cancelled. However, small hail, gusty winds and heavy rain are still possible with these thunderstorms. To report severe weather, contact your nearest law enforcement agency. They will relay your report to the National Weather Service Jacksonville. && LAT...LON 2975 8176 3010 8189 3013 8169 3012 8168 3013 8160 3012 8157 3012 8154 3010 8154 3010 8145 3011 8144 3014 8144 3013 8137 2992 8127 TIME...MOT...LOC 2036Z 332DEG 15KT 3005 8148 3000 8170 $$ HESS  204 WWUS53 KARX 182042 SVSARX Severe Weather Statement National Weather Service La Crosse WI 342 PM CDT Tue Aug 18 2026 WIC063-123-182100- /O.CON.KARX.SV.W.0180.000000T0000Z-260818T2100Z/ La Crosse WI-Vernon WI- 342 PM CDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR SOUTHEASTERN LA CROSSE AND NORTHWESTERN VERNON COUNTIES... At 341 PM CDT, severe thunderstorms were located along a line extending from near Westby to near Stoddard, moving south at 15 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Trained weather spotters. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. These severe storms will be near... Coon Valley around 345 PM CDT. Other locations impacted by these severe thunderstorms include Mount La Crosse, County Roads G And H, Brinkman Ridge, Newburg Corners, South Side Of La Crosse, Norskedalen, and St Joseph. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4363 9112 4374 9124 4378 9122 4380 9091 4373 9091 TIME...MOT...LOC 2041Z 339DEG 11KT 4371 9091 4371 9121 HAIL THREAT...OBSERVED MAX HAIL SIZE...1.00 IN WIND THREAT...OBSERVED MAX WIND GUST...60 MPH $$ Skow  905 FZUS72 KMHX 182045 MWSMHX Marine Weather Statement National Weather Service Newport/Morehead City NC 445 PM EDT Tue Aug 18 2026 AMZ230-182115- 445 PM EDT Tue Aug 18 2026 ...STRONG THUNDERSTORMS APPROACHING THE WATERS... The areas affected include... Albemarle Sound... At 445 PM EDT, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots. These thunderstorms were located along a line extending from 8 nm west of Currituck Sound to near The Mouth Of The Perquimans River, moving southeast at 15 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. Mariners can expect gusty winds to around 30 knots, locally higher waves, lightning strikes, and heavy downpours. Boaters should seek safe harbor immediately until these storms pass. This strong thunderstorms will likely produce winds to around 30 knots, and could pose a serious hazard for boaters. A special marine warning may eventually be required when these storms reach the nearshore waters. Boaters should consider heading for shore before these storms arrive. Intense lightning is occurring with these storms. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && LAT...LON 3617 7591 3607 7580 3588 7578 3592 7594 3594 7590 3592 7581 3594 7587 3597 7585 3594 7592 3596 7595 3595 7603 3608 7637 3611 7626 3610 7622 3612 7617 3615 7606 3614 7600 3618 7600 $$ 41  604 WUUS54 KMOB 182047 SVRMOB ALC025-099-182115- /O.NEW.KMOB.SV.W.0118.260818T2047Z-260818T2115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Mobile AL 347 PM CDT Tue Aug 18 2026 The National Weather Service in Mobile has issued a * Severe Thunderstorm Warning for... North central Monroe County in south central Alabama... East central Clarke County in southwestern Alabama... * Until 415 PM CDT. * At 347 PM CDT, a severe thunderstorm was located 9 miles east of Fulton, or 12 miles east of Grove Hill, moving southeast at 15 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will remain over mainly rural areas of north central Monroe and east central Clarke Counties. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3183 8762 3183 8746 3169 8721 3149 8742 3175 8770 3184 8762 TIME...MOT...LOC 2047Z 310DEG 15KT 3178 8757 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.88 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$  641 WWUS55 KBYZ 182047 SVSBYZ Severe Weather Statement National Weather Service Billings MT 247 PM MDT Tue Aug 18 2026 MTC087-182115- /O.CON.KBYZ.SV.W.0136.000000T0000Z-260818T2115Z/ Rosebud MT- 247 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM MDT FOR NORTHERN ROSEBUD COUNTY... At 247 PM MDT, a severe thunderstorm was located 20 miles north of Forsyth, moving southeast at 35 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Mainly rural areas of Northern Rosebud County. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. Continuous cloud to ground lightning is occurring with this storm. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. && LAT...LON 4660 10710 4681 10677 4663 10627 4636 10674 TIME...MOT...LOC 2012Z 294DEG 41KT 4672 10723 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Tesar  644 WUUS52 KJAX 182047 SVRJAX FLC019-109-182115- /O.NEW.KJAX.SV.W.0206.260818T2047Z-260818T2115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Jacksonville FL 447 PM EDT Tue Aug 18 2026 The National Weather Service in Jacksonville has issued a * Severe Thunderstorm Warning for... Northwestern St. Johns County in northeastern Florida... Central Clay County in northeastern Florida... * Until 515 PM EDT. * At 447 PM EDT, a severe thunderstorm was located over Middleburg, and is nearly stationary. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Green Cove Springs, Middleburg, Penney Farms, and Asbury Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3010 8198 3015 8187 3003 8166 2989 8161 2984 8174 2989 8197 TIME...MOT...LOC 2047Z 336DEG 4KT 3009 8190 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ HESS  499 FZUS73 KMQT 182047 MWSMQT Marine Weather Statement National Weather Service Marquette MI 447 PM EDT Tue Aug 18 2026 LMZ221-182130- 447 PM EDT Tue Aug 18 2026 A Marine Weather Statement has been issued for the following areas... Green Bay North of line from Cedar River MI to Rock Island Passage... At 447 PM EDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots and small hail. This thunderstorm was located 9 nm west of Minneapolis Shoal, moving southeast at 25 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 4542 8694 4540 8695 4540 8710 4549 8734 4565 8726 4570 8717 4561 8667 4543 8681 4543 8683 4540 8684 4541 8691 4540 8693 $$ lc