689 FZUS73 KLOT 190100 MWSLOT Marine Weather Statement National Weather Service Chicago/Romeoville 800 PM CDT Tue Aug 18 2026 LMZ740-777-190230- /O.CON.KLOT.MA.W.0075.000000T0000Z-260819T0230Z/ 800 PM CDT Tue Aug 18 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 930 PM CDT... For the following areas... Nearshore Waters from Winthrop Harbor to Wilmette Harbor... Open Waters from Winthrop Harbor to Wilmette Harbor out to Mid Lake... At 800 PM CDT, strong thunderstorms were located along a line extending from 13 nm east of Wind Pt. to 7 nm east of Kenosha to 13 nm west of Pleasant Prairie, moving southeast at 25 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Winthrop Harbor and Waukegan Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4246 8702 4212 8696 4211 8760 4208 8768 4214 8775 4227 8783 4248 8780 TIME...MOT...LOC 0100Z 328DEG 25KT 4275 8746 4261 8769 4255 8817 HAIL...0.00IN WIND...>34KTS $$ Yack  329 WWUS53 KAPX 190103 SVSAPX Severe Weather Statement National Weather Service Gaylord MI 903 PM EDT Tue Aug 18 2026 MIC137-190130- /O.CON.KAPX.SV.W.0093.000000T0000Z-260819T0130Z/ Otsego MI- 903 PM EDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM EDT FOR SOUTHEASTERN OTSEGO COUNTY... At 902 PM EDT, a severe thunderstorm was located near Johannesburg, or 8 miles east of Gaylord, moving east at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. This severe storm will be near... Johannesburg around 910 PM EDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4490 8437 4494 8461 4504 8454 4504 8437 TIME...MOT...LOC 0102Z 270DEG 25KT 4498 8452 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Dippman  719 WUUS53 KUNR 190103 SVRUNR SDC081-093-190145- /O.NEW.KUNR.SV.W.0306.260819T0103Z-260819T0145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Rapid City SD 703 PM MDT Tue Aug 18 2026 The National Weather Service in Rapid City has issued a * Severe Thunderstorm Warning for... Southeastern Lawrence County in west central South Dakota... Southwestern Meade County in west central South Dakota... * Until 745 PM MDT. * At 703 PM MDT, a severe thunderstorm was located over Galena, or 6 miles southeast of Lead, moving east at 25 mph. HAZARD...Ping pong ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Piedmont, Tilford, Galena, Brownsville and Dalton Lake. This includes Interstate 90 in South Dakota between Mile Markers 37 and 47. 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. && LAT...LON 4428 10375 4435 10371 4435 10333 4416 10337 TIME...MOT...LOC 0103Z 276DEG 19KT 4431 10367 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.50 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Dye  977 WHUS53 KGRB 190104 SMWGRB LMZ565-190145- /O.NEW.KGRB.MA.W.0056.260819T0104Z-260819T0145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Green Bay WI 804 PM CDT Tue Aug 18 2026 The National Weather Service in Green Bay has issued a * Special Marine Warning for... Open waters of Lake Michigan from Sturgeon Bay to Two Rivers... * Until 845 PM CDT. * At 804 PM CDT, a severe thunderstorm was located 11 nm east of Algoma, or 14 nm northeast of Kewaunee Pierhead Light, moving southeast at 30 knots. HAZARD...Wind gusts 34 knots or greater and large hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. * The severe thunderstorm will remain over mainly open waters east of Kewaunee. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4432 8692 4448 8735 4472 8724 4464 8679 TIME...MOT...LOC 0104Z 297DEG 31KT 4456 8718 HAIL...>.75IN WIND...>34KTS $$ Eckberg  105 WWUS53 KAPX 190108 SVSAPX Severe Weather Statement National Weather Service Gaylord MI 908 PM EDT Tue Aug 18 2026 MIC079-113-190145- /O.CON.KAPX.SV.W.0094.000000T0000Z-260819T0145Z/ Kalkaska MI-Missaukee MI- 908 PM EDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT FOR SOUTHEASTERN KALKASKA AND NORTHEASTERN MISSAUKEE COUNTIES... At 908 PM EDT, a severe thunderstorm was located near Sharon, or 13 miles south of Kalkaska, moving southeast at 30 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. This severe storm will be near... Moorestown around 915 PM EDT. Other locations impacted by this severe thunderstorm include Stittsville and Smithville. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4449 8526 4463 8520 4461 8485 4439 8485 TIME...MOT...LOC 0108Z 286DEG 25KT 4454 8512 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Dippman  936 WWUS53 KAPX 190109 SVSAPX Severe Weather Statement National Weather Service Gaylord MI 909 PM EDT Tue Aug 18 2026 MIC137-190119- /O.CAN.KAPX.SV.W.0093.000000T0000Z-260819T0130Z/ Otsego MI- 909 PM EDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN OTSEGO COUNTY IS CANCELLED... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning has been cancelled. To report severe weather, contact your nearest law enforcement agency. They will relay your report to the National Weather Service Gaylord. && LAT...LON 4490 8437 4494 8461 4504 8454 4504 8437 TIME...MOT...LOC 0107Z 281DEG 25KT 4497 8445 $$ Dippman  587 FZUS73 KMKX 190109 MWSMKX Marine Weather Statement National Weather Service Milwaukee/Sullivan WI 809 PM CDT Tue Aug 18 2026 LMZ645-190117- /O.CAN.KMKX.MA.W.0066.000000T0000Z-260819T0130Z/ 809 PM CDT Tue Aug 18 2026 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Nearshore waters from North Point Light WI to Wind Point WI... The thunderstorms have moved out of the warned area and no longer pose a significant threat to boaters. && LAT...LON 4277 8706 4279 8759 4278 8773 4279 8767 4284 8769 4297 8746 4337 8729 4338 8714 TIME...MOT...LOC 0107Z 270DEG 31KT 4319 8704 4288 8707 4272 8727 4264 8748 $$ LMZ646-671-673-675-190130- /O.CON.KMKX.MA.W.0066.000000T0000Z-260819T0130Z/ 809 PM CDT Tue Aug 18 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 830 PM CDT... For the following areas... Nearshore waters from Wind Point WI TO Winthrop Harbor IL... Lake Michigan from Port Washington WI to Winthrop Harbor IL... At 807 PM CDT, severe thunderstorms capable of producing waterspouts were located along a line extending from 28 nm southwest of White Lake Pier Heads to 33 nm east of Racine to 14 nm southeast of Wind Pt., moving east at 30 knots. HAZARD...Waterspouts and wind gusts to nearly 50 knots. SOURCE...Radar indicated. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. Severe thunderstorms will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4277 8706 4279 8759 4278 8773 4279 8767 4284 8769 4297 8746 4337 8729 4338 8714 TIME...MOT...LOC 0107Z 270DEG 31KT 4319 8704 4288 8707 4272 8727 4264 8748 WATERSPOUT...POSSIBLE HAIL...0.00IN WIND...49KTS $$ SHEPPARD  995 WWUS53 KDMX 190110 SVSDMX Severe Weather Statement National Weather Service Des Moines IA 810 PM CDT Tue Aug 18 2026 IAC147-190120- /O.CAN.KDMX.SV.W.0326.000000T0000Z-260819T0130Z/ Palo Alto IA- 810 PM CDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PALO ALTO COUNTY 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. A Severe Thunderstorm Watch remains in effect until midnight CDT for north central and northwestern Iowa. LAT...LON 4315 9445 4314 9444 4299 9471 4317 9481 4326 9462 4326 9460 TIME...MOT...LOC 0109Z 318DEG 25KT 4310 9459 $$ Dodson  264 WWUS55 KGGW 190114 SVSGGW Severe Weather Statement National Weather Service Glasgow MT 714 PM MDT Tue Aug 18 2026 MTC069-071-190122- /O.EXP.KGGW.SV.W.0124.000000T0000Z-260819T0115Z/ Phillips MT-Petroleum MT- 714 PM MDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL PHILLIPS AND NORTHEASTERN PETROLEUM COUNTIES WILL EXPIRE AT 715 PM MDT... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning will be allowed to expire. However, small hail and gusty winds are still possible with this thunderstorm. && LAT...LON 4786 10847 4803 10817 4766 10761 4766 10766 4743 10799 TIME...MOT...LOC 0112Z 314DEG 24KT 4759 10785 $$ Stoinski  452 FZUS73 KAPX 190116 MWSAPX Marine Weather Statement National Weather Service Gaylord MI 916 PM EDT Tue Aug 18 2026 LMZ346-366-190145- 916 PM EDT Tue Aug 18 2026 A Marine Weather Statement has been issued for the following areas... Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake... Manistee to Point Betsie MI... At 916 PM EDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots. This thunderstorm was located 21 nm northwest of Manistee Light, moving southeast at 40 knots. Locations impacted include... Portage Lake, Williamsport, and Manistee. 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 4422 8635 4426 8634 4428 8642 4426 8656 4439 8689 4449 8686 4457 8681 4442 8619 4422 8630 $$ JZ  441 FZUS73 KGRB 190117 MWSGRB Marine Weather Statement National Weather Service Green Bay WI 817 PM CDT Tue Aug 18 2026 LMZ565-190145- /O.CON.KGRB.MA.W.0056.000000T0000Z-260819T0145Z/ 817 PM CDT Tue Aug 18 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 845 PM CDT... For the following areas... Open waters of Lake Michigan from Sturgeon Bay to Two Rivers... At 816 PM CDT, a strong thunderstorm was located 18 nm east of Algoma, or 19 nm east of Kewaunee Pierhead Light, moving southeast at 30 knots. Another line of thunderstorms extended from Kewaunee to Green Bay that will offshore. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. The strong thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4432 8692 4448 8735 4472 8724 4464 8679 TIME...MOT...LOC 0116Z 297DEG 31KT 4451 8705 HAIL...<.75IN WIND...>34KTS $$ Eckberg  682 WWUS54 KBMX 190119 SVSBMX Severe Weather Statement National Weather Service Birmingham AL 819 PM CDT Tue Aug 18 2026 ALC065-190129- /O.CAN.KBMX.SV.W.0151.000000T0000Z-260819T0130Z/ Hale AL- 819 PM CDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN HALE COUNTY IS CANCELLED... The severe thunderstorm which prompted the warning has moved out of the warned area. Therefore, the warning has been cancelled. && LAT...LON 3248 8769 3248 8752 3229 8752 3236 8775 TIME...MOT...LOC 0119Z 280DEG 15KT 3246 8767 $$ ALC091-190130- /O.CON.KBMX.SV.W.0151.000000T0000Z-260819T0130Z/ Marengo AL- 819 PM CDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR NORTHEASTERN MARENGO COUNTY... At 819 PM CDT, a severe thunderstorm was located near Faunsdale, or 9 miles west of Uniontown, moving east at 15 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Uniontown, Faunsdale, and Dayton. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3248 8769 3248 8752 3229 8752 3236 8775 TIME...MOT...LOC 0119Z 280DEG 15KT 3246 8767 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ 44  074 WWUS53 KUNR 190120 SVSUNR Severe Weather Statement National Weather Service Rapid City SD 720 PM MDT Tue Aug 18 2026 SDC081-093-190145- /O.CON.KUNR.SV.W.0306.000000T0000Z-260819T0145Z/ Lawrence SD-Meade SD- 720 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR SOUTHEASTERN LAWRENCE AND SOUTHWESTERN MEADE COUNTIES... At 720 PM MDT, a severe thunderstorm was located 5 miles northwest of Nemo, or 11 miles south of Sturgis, moving east at 20 mph. HAZARD...Ping pong ball size hail and 60 mph wind gusts. SOURCE...Trained spotters reported. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. Locations impacted include... Piedmont, Tilford and Dalton Lake. This includes Interstate 90 in South Dakota between Mile Markers 40 and 47. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and has produced large hail. && LAT...LON 4434 10361 4430 10334 4416 10337 4426 10368 TIME...MOT...LOC 0103Z 285DEG 18KT 4428 10368 HAIL THREAT...OBSERVED MAX HAIL SIZE...1.50 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Dye  896 WWUS54 KBMX 190120 SVSBMX Severe Weather Statement National Weather Service Birmingham AL 820 PM CDT Tue Aug 18 2026 ALC091-190130- /O.CON.KBMX.SV.W.0152.000000T0000Z-260819T0130Z/ Marengo AL- 820 PM CDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT FOR SOUTHERN MARENGO COUNTY... At 820 PM CDT, severe thunderstorms were located along a line extending from near Freddie Jones Field to near Miller to near Sweet Water, moving southeast at 35 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Linden, Thomaston, Sweet Water, Dayton, Putnam, Freddie Jones Field, Nanafalia, Consul, Magnolia, Wayne, Surginer, Miller, Dixons Mill, Vineland, Carleys, Octagon, Clayhill, Nicholsville, and Calvary. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3210 8804 3212 8799 3220 8788 3237 8775 3230 8747 3227 8747 3225 8752 3213 8752 3213 8762 3200 8763 3199 8799 3200 8811 3206 8812 3208 8804 TIME...MOT...LOC 0120Z 297DEG 29KT 3231 8768 3218 8775 3204 8791 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ 44  169 FZUS73 KMKX 190122 MWSMKX Marine Weather Statement National Weather Service Milwaukee/Sullivan WI 822 PM CDT Tue Aug 18 2026 LMZ646-671-673-675-190131- /O.EXP.KMKX.MA.W.0066.000000T0000Z-260819T0130Z/ 822 PM CDT Tue Aug 18 2026 ...THE SPECIAL MARINE WARNING WILL EXPIRE AT 830 PM CDT... The affected areas were... Nearshore waters from Wind Point WI TO Winthrop Harbor IL... Lake Michigan from Port Washington WI to Winthrop Harbor IL... The strong thunderstorms have have moved out of the area and no longer pose a significant threat to boaters. && LAT...LON 4277 8706 4279 8759 4278 8773 4279 8767 4284 8769 4297 8746 4337 8729 4338 8714 TIME...MOT...LOC 0121Z 302DEG 27KT 4317 8699 4286 8702 4270 8722 4262 8743 $$ SHEPPARD  709 FZUS73 KLOT 190125 MWSLOT Marine Weather Statement National Weather Service Chicago/Romeoville 825 PM CDT Tue Aug 18 2026 LMZ740-777-190230- /O.CON.KLOT.MA.W.0075.000000T0000Z-260819T0230Z/ 825 PM CDT Tue Aug 18 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 930 PM CDT... For the following areas... Nearshore Waters from Winthrop Harbor to Wilmette Harbor... Open Waters from Winthrop Harbor to Wilmette Harbor out to Mid Lake... At 824 PM CDT, strong thunderstorms were located along a line extending from 17 nm southeast of Wind Pt. to near Winthrop Harbor to 7 nm northeast of McHenry, moving southeast at 25 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Winthrop Harbor and Waukegan Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4246 8702 4212 8696 4211 8760 4208 8768 4214 8775 4227 8783 4248 8780 TIME...MOT...LOC 0124Z 336DEG 23KT 4260 8744 4246 8767 4240 8815 HAIL...0.00IN WIND...>34KTS $$ Yack  747 WWUS53 KAPX 190125 SVSAPX Severe Weather Statement National Weather Service Gaylord MI 925 PM EDT Tue Aug 18 2026 MIC079-113-190145- /O.CON.KAPX.SV.W.0094.000000T0000Z-260819T0145Z/ Kalkaska MI-Missaukee MI- 925 PM EDT Tue Aug 18 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM EDT FOR SOUTHEASTERN KALKASKA AND NORTHEASTERN MISSAUKEE COUNTIES... At 924 PM EDT, a severe thunderstorm was located over Moorestown, or 14 miles northeast of Lake City, moving southeast at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. This severe storm will be near... Moorestown around 930 PM EDT. Other locations impacted by this severe thunderstorm include Stittsville and Smithville. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4448 8520 4460 8506 4456 8485 4439 8485 TIME...MOT...LOC 0124Z 301DEG 24KT 4447 8498 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ JZ  259 WHUS53 KAPX 190127 SMWAPX LMZ346-366-190300- /O.NEW.KAPX.MA.W.0100.260819T0127Z-260819T0300Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Gaylord MI 927 PM EDT Tue Aug 18 2026 The National Weather Service in Gaylord has issued a * Special Marine Warning for... Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake... Manistee to Point Betsie MI... * Until 1100 PM EDT. * At 926 PM EDT, a severe thunderstorm was located 25 nm northwest of Manistee Light, moving southeast at 30 knots. HAZARD...Wind gusts to 40 knots and large hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. * Locations impacted include... Portage Lake, Williamsport, and Manistee. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4422 8635 4426 8634 4428 8642 4425 8667 4434 8691 4457 8681 4442 8619 4441 8619 4422 8630 TIME...MOT...LOC 0126Z 294DEG 29KT 4444 8688 HAIL...>.75IN WIND...40KTS $$ JZ  847 WWUS55 KGGW 190129 SVSGGW Severe Weather Statement National Weather Service Glasgow MT 729 PM MDT Tue Aug 18 2026 MTC069-190139- /O.EXP.KGGW.SV.W.0125.000000T0000Z-260819T0130Z/ Petroleum MT- 729 PM MDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN PETROLEUM COUNTY WILL EXPIRE AT 730 PM MDT... 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. && LAT...LON 4727 10872 4727 10859 4730 10859 4731 10834 4732 10831 4734 10831 4734 10823 4687 10844 4689 10861 4710 10861 4710 10874 TIME...MOT...LOC 0129Z 286DEG 20KT 4710 10831 $$ Stoinski  949 WWUS53 KUNR 190129 SVSUNR Severe Weather Statement National Weather Service Rapid City SD 729 PM MDT Tue Aug 18 2026 SDC081-093-190145- /O.CON.KUNR.SV.W.0306.000000T0000Z-260819T0145Z/ Lawrence SD-Meade SD- 729 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM MDT FOR EASTERN LAWRENCE AND SOUTHWESTERN MEADE COUNTIES... At 729 PM MDT, a severe thunderstorm was located over Dalton Lake, or 12 miles south of Sturgis, moving east at 20 mph. HAZARD...Ping pong ball size hail and 60 mph wind gusts. SOURCE...Trained spotters reported. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. Locations impacted include... Piedmont and Dalton Lake. This includes Interstate 90 in South Dakota between Mile Markers 42 and 47. PRECAUTIONARY/PREPAREDNESS ACTIONS... Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and has produced large hail. && LAT...LON 4426 10357 4431 10355 4426 10335 4416 10337 4423 10359 TIME...MOT...LOC 0120Z 285DEG 18KT 4425 10356 HAIL THREAT...OBSERVED MAX HAIL SIZE...1.50 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Dye  116 WHUS52 KTAE 190129 SMWTAE GMZ735-751-752-755-770-772-775-190300- /O.NEW.KTAE.MA.W.0300.260819T0129Z-260819T0300Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Tallahassee FL 929 PM EDT Tue Aug 18 2026 The National Weather Service in Tallahassee has issued a * Special Marine Warning for... Coastal Waters From Ochlockonee River to Apalachicola FL out to 20 Nm... Coastal Waters from Mexico Beach to Apalachicola out 20 NM... Coastal waters from Okaloosa-Walton County Line to Mexico Beach out 20 NM... St. Andrews Bay Waterways... Waters from Mexico Beach to Apalachicola FL from 20 to 60 NM... Waters from Okaloosa-Walton County Line to Mexico Beach from 20 to 60 NM... Waters from Suwannee River to Apalachicola FL from 20 to 60 NM... * Until 1100 PM EDT/1000 PM CDT/. * At 929 PM EDT/829 PM CDT/, strong thunderstorms were located along a line extending from 20 nm southwest of Mexico Beach to 10 nm northeast of Apalachicola, moving south at 30 knots. HAZARD...Wind gusts 34 knots or greater. 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... Mexico Beach, Port St. Joe, Empire Mica Wreck, Apalachicola, C Tower, Cape San Blas, St George Island, and Panama City Beach. 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 3012 8536 3004 8533 2999 8541 2982 8526 2973 8525 2976 8504 2986 8486 2981 8480 2984 8474 2907 8476 2916 8611 3020 8585 TIME...MOT...LOC 0129Z 009DEG 28KT 2977 8575 2986 8487 HAIL...0.00IN WIND...>34KTS $$ 02-MONTGOMERY  411 FZUS72 KTAE 190130 MWSTAE Marine Weather Statement National Weather Service Tallahassee FL 830 PM CDT Tue Aug 18 2026 GMZ735-751-752-190200- /O.CON.KTAE.MA.W.0299.000000T0000Z-260819T0200Z/ 830 PM CDT Tue Aug 18 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 900 PM CDT... For the following areas... Coastal Waters from Mexico Beach to Apalachicola out 20 NM... Coastal waters from Okaloosa-Walton County Line to Mexico Beach out 20 NM... St. Andrews Bay Waterways... At 830 PM CDT, strong thunderstorms were located along a line extending from 17 nm north of Port St. Joe to 7 nm north of Mexico Beach to 11 nm west of Panama City Beach, moving southeast at 10 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Expect wind gusts in excess of 34 knots...suddenly higher waves...frequent lightning...and heavy downpours. Make sure all on board are wearing life jackets. Locations impacted include... Panama City Beach, Cape San Blas, Mexico Beach, and Port St. Joe. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 3033 8549 3023 8551 3019 8560 3018 8546 3012 8536 3004 8534 2999 8541 2982 8526 2973 8525 2974 8521 2958 8533 2961 8560 2988 8601 3037 8584 3037 8575 3031 8570 3038 8560 TIME...MOT...LOC 0130Z 323DEG 12KT 3009 8519 3006 8543 3017 8608 HAIL...0.00IN WIND...>34KTS $$ 02-MONTGOMERY  488 FZUS73 KMKX 190131 MWSMKX Marine Weather Statement National Weather Service Milwaukee/Sullivan WI 831 PM CDT Tue Aug 18 2026 LMZ646-673-675-190215- /O.CON.KMKX.MA.W.0067.000000T0000Z-260819T0215Z/ 831 PM CDT Tue Aug 18 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 915 PM CDT... For the following areas... Nearshore waters from Wind Point WI TO Winthrop Harbor IL... Lake Michigan from North Point Light WI to Winthrop Harbor IL 5 nm off shore to mid lake... At 830 PM CDT, strong thunderstorms were located along a line extending from 33 nm east of Wind Pt. to near Winthrop Harbor, moving southeast at 25 knots. HAZARD...Wind gusts to nearly 50 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Strong thunderstorms will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4248 8780 4261 8782 4271 8777 4278 8706 4246 8702 TIME...MOT...LOC 0130Z 318DEG 24KT 4261 8703 4247 8787 HAIL...0.00IN WIND...49KTS $$ SHEPPARD  887 FZUS74 KMOB 190133 MWSMOB Marine Weather Statement National Weather Service Mobile AL 833 PM CDT Tue Aug 18 2026 GMZ650-670-675-190143- /O.CAN.KMOB.MA.W.0149.000000T0000Z-260819T0200Z/ 833 PM CDT Tue Aug 18 2026 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Coastal waters from Pensacola FL to Pascagoula MS out 20 NM... Waters from Okaloosa-Walton County Line to Pensacola FL from 20 to 60 NM... Waters from Pensacola FL to Pascagoula MS from 20 to 60 NM... The thunderstorms have weakened, thus the warning has been cancelled. LAT...LON 2944 8779 3012 8766 3009 8719 2999 8718 3006 8674 3005 8660 2939 8667 2933 8705 2932 8725 2930 8738 TIME...MOT...LOC 0130Z 005DEG 30KT 2979 8759 2952 8681 $$ MM  347 WUUS53 KUNR 190134 SVRUNR SDC081-093-103-190215- /O.NEW.KUNR.SV.W.0307.260819T0134Z-260819T0215Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Rapid City SD 734 PM MDT Tue Aug 18 2026 The National Weather Service in Rapid City has issued a * Severe Thunderstorm Warning for... Southeastern Lawrence County in west central South Dakota... Southwestern Meade County in west central South Dakota... Central Pennington County in west central South Dakota... * Until 815 PM MDT. * At 734 PM MDT, a severe thunderstorm was located over Nemo, or 14 miles northwest of Rapid City, 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... Rapid City, western Rapid Valley, Ellsworth Air Force Base, northwestern Box Elder, Black Hawk, Summerset, Nemo, Piedmont and Dalton Lake. This includes Interstate 90 in South Dakota between Mile Markers 44 and 64. 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. This storm has a history or producing large damaging hail. && LAT...LON 4417 10359 4428 10352 4418 10305 4399 10320 TIME...MOT...LOC 0134Z 296DEG 22KT 4419 10347 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Dye  533 WWUS53 KUNR 190135 SVSUNR Severe Weather Statement National Weather Service Rapid City SD 735 PM MDT Tue Aug 18 2026 SDC081-093-190145- /O.CAN.KUNR.SV.W.0306.000000T0000Z-260819T0145Z/ Lawrence SD-Meade SD- 735 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR EASTERN LAWRENCE AND SOUTHWESTERN MEADE COUNTIES... The Severe Thunderstorm Warning that was previously in effect has been reissued for Lawrence and Meade Counties and is in effect until 815 PM MDT. Please refer to that bulletin for the latest severe weather information. && LAT...LON 4426 10357 4431 10355 4426 10335 4416 10337 4423 10359 TIME...MOT...LOC 0129Z 285DEG 18KT 4424 10350 $$ Dye  907 FZUS73 KGRB 190136 MWSGRB Marine Weather Statement National Weather Service Green Bay WI 836 PM CDT Tue Aug 18 2026 LMZ565-190145- /O.EXP.KGRB.MA.W.0056.000000T0000Z-260819T0145Z/ 836 PM CDT Tue Aug 18 2026 ...THE SPECIAL MARINE WARNING WILL EXPIRE AT 845 PM CDT... The affected areas were... Open waters of Lake Michigan from Sturgeon Bay to Two Rivers... The thunderstorm that prompted the warning has moved out of the area and no longer poses a significant threat to boaters. Scattered showers and thunderstorms will continue through 10 pm this evening. && LAT...LON 4432 8692 4448 8735 4472 8724 4464 8679 TIME...MOT...LOC 0135Z 297DEG 31KT 4444 8687 $$ Eckberg  571 WWUS53 KAPX 190137 SVSAPX Severe Weather Statement National Weather Service Gaylord MI 937 PM EDT Tue Aug 18 2026 MIC079-113-190147- /O.EXP.KAPX.SV.W.0094.000000T0000Z-260819T0145Z/ Kalkaska MI-Missaukee MI- 937 PM EDT Tue Aug 18 2026 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN KALKASKA AND NORTHEASTERN MISSAUKEE COUNTIES WILL EXPIRE AT 945 PM EDT... The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or property. Therefore, the warning will be allowed to expire. However, gusty winds are still possible with this thunderstorm. && LAT...LON 4448 8520 4460 8506 4456 8485 4439 8485 TIME...MOT...LOC 0137Z 266DEG 18KT 4447 8490 $$ JZ  287 FZUS73 KAPX 190146 MWSAPX Marine Weather Statement National Weather Service Gaylord MI 946 PM EDT Tue Aug 18 2026 LMZ346-366-190300- /O.CON.KAPX.MA.W.0100.000000T0000Z-260819T0300Z/ 946 PM EDT Tue Aug 18 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1100 PM EDT... For the following areas... Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake... Manistee to Point Betsie MI... At 945 PM EDT, a strong thunderstorm was located 16 nm northwest of Manistee Light, moving southeast at 30 knots. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Portage Lake, Williamsport, Manistee, and Manistee Light. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4423 8635 4426 8634 4428 8642 4425 8667 4432 8687 4455 8678 4442 8619 4422 8630 TIME...MOT...LOC 0145Z 294DEG 29KT 4437 8667 HAIL...<.75IN WIND...>34KTS $$ JZ  369 WWUS53 KUNR 190150 SVSUNR Severe Weather Statement National Weather Service Rapid City SD 750 PM MDT Tue Aug 18 2026 SDC081-190200- /O.CAN.KUNR.SV.W.0307.000000T0000Z-260819T0215Z/ Lawrence SD- 750 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR SOUTHEASTERN LAWRENCE COUNTY... The storm which prompted the warning has moved out of the area. Therefore, the warning has been cancelled. However, gusty winds are still possible with this thunderstorm. && LAT...LON 4412 10348 4414 10346 4414 10345 4415 10345 4420 10340 4413 10309 4399 10320 TIME...MOT...LOC 0134Z 296DEG 22KT 4419 10347 $$ SDC093-103-190215- /O.CON.KUNR.SV.W.0307.000000T0000Z-260819T0215Z/ Meade SD-Pennington SD- 750 PM MDT Tue Aug 18 2026 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM MDT FOR SOUTHERN MEADE AND CENTRAL PENNINGTON COUNTIES... At 750 PM MDT, a severe thunderstorm was located near Black Hawk, or 7 miles northwest of Rapid City, moving southeast at 25 mph. HAZARD...Ping pong ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. Locations impacted include... Rapid City, western Rapid Valley, western Box Elder, Black Hawk and Summerset. This includes Interstate 90 in South Dakota between Mile Markers 50 and 64. 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. This storm has a history or producing large damaging hail. && LAT...LON 4412 10348 4414 10346 4414 10345 4415 10345 4420 10340 4413 10309 4399 10320 TIME...MOT...LOC 0134Z 305DEG 22KT 4417 10348 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.50 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Dye  043 WUUS53 KTOP 190151 SVRTOP KSC027-041-061-190215- /O.NEW.KTOP.SV.W.0369.260819T0151Z-260819T0215Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Topeka KS 851 PM CDT Tue Aug 18 2026 The National Weather Service in Topeka has issued a * Severe Thunderstorm Warning for... Northeastern Dickinson County in central Kansas... Northwestern Geary County in east central Kansas... Southeastern Clay County in north central Kansas... * Until 915 PM CDT. * At 851 PM CDT, a severe thunderstorm was located 8 miles north of Moonlight, moving east at 25 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Junction City, Wakefield, Milford, and Milford Lake. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3908 9721 3922 9718 3921 9685 3903 9686 TIME...MOT...LOC 0151Z 276DEG 23KT 3913 9713 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Jones  852 FZUS73 KLOT 190156 MWSLOT Marine Weather Statement National Weather Service Chicago/Romeoville 856 PM CDT Tue Aug 18 2026 LMZ740-777-190230- /O.CON.KLOT.MA.W.0075.000000T0000Z-260819T0230Z/ 856 PM CDT Tue Aug 18 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 930 PM CDT... For the following areas... Nearshore Waters from Winthrop Harbor to Wilmette Harbor... Open Waters from Winthrop Harbor to Wilmette Harbor out to Mid Lake... At 856 PM CDT, strong thunderstorms were located along a line extending from 20 nm east of Winthrop Harbor to 10 nm southeast of Waukegan Harbor to 11 nm southeast of McHenry, moving southeast at 25 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Winthrop Harbor and Waukegan Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4246 8702 4212 8696 4211 8760 4208 8768 4214 8775 4227 8783 4248 8780 TIME...MOT...LOC 0156Z 309DEG 25KT 4238 8736 4227 8762 4221 8810 HAIL...0.00IN WIND...>34KTS $$ Yack