184 WUUS53 KLOT 091803 SVRLOT ILC031-043-089-091900- /O.NEW.KLOT.SV.W.0222.260809T1803Z-260809T1900Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Chicago/Romeoville 103 PM CDT Sun Aug 9 2026 The National Weather Service in Chicago has issued a * Severe Thunderstorm Warning for... East central Kane County in northeastern Illinois... Northern DuPage County in northeastern Illinois... Northern Cook County in northeastern Illinois... * Until 200 PM CDT. * At 102 PM CDT, severe thunderstorms were located along a line extending from Buffalo Grove to Hoffman Estates to near St. Charles, moving east at 40 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... Chicago, Elgin, Cicero, Arlington Heights, Evanston, Schaumburg, Palatine, Skokie, Des Plaines, Berwyn, Mount Prospect, Wheaton, Hoffman Estates, Oak Park, Glenview, Elmhurst, Lombard, Buffalo Grove, Bartlett, Ohare Airport, Streamwood, Carol Stream, Hanover Park, Wheeling, and Park Ridge. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4215 8776 4206 8767 4203 8767 4190 8762 4189 8761 4187 8762 4182 8760 4189 8846 4216 8804 TIME...MOT...LOC 1802Z 270DEG 34KT 4214 8796 4205 8814 4194 8835 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Carlaw  877 FZUS72 KJAX 091803 MWSJAX Marine Weather Statement National Weather Service Jacksonville FL 203 PM EDT Sun Aug 9 2026 AMZ450-091900- 203 PM EDT Sun Aug 9 2026 A Marine Weather Statement has been issued for the following areas... Coastal waters from Altamaha Sound to Fernandina Beach FL out 20 NM... At 203 PM EDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots. This thunderstorm was located over Jekyll Island, or near St. Simons Island, moving southwest at 10 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 3072 8169 3075 8169 3078 8167 3076 8162 3079 8157 3080 8163 3081 8166 3089 8162 3092 8157 3094 8160 3121 8147 3118 8116 3068 8131 $$ 23  695 FZUS73 KLOT 091807 MWSLOT Marine Weather Statement National Weather Service Chicago/Romeoville 107 PM CDT Sun Aug 9 2026 LMZ740-777-091900- /O.CON.KLOT.MA.W.0064.000000T0000Z-260809T1900Z/ 107 PM CDT Sun Aug 9 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 200 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 106 PM CDT, strong thunderstorms were located along a line extending from 33 nm east of Wind Pt. to 14 nm east of Winthrop Harbor to 10 nm northwest of Wilmette Harbor, moving east at 35 knots. HAZARD...Wind gusts to nearly 50 knots and small hail. 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... && LAT...LON 4246 8702 4212 8696 4211 8760 4208 8768 4214 8775 4227 8783 4248 8780 TIME...MOT...LOC 1806Z 277DEG 33KT 4267 8702 4239 8749 4216 8789 HAIL...<.75IN WIND...49KTS $$ Carlaw  426 WHUS53 KIWX 091809 SMWIWX LMZ043-046-080-092015- /O.NEW.KIWX.MA.W.0037.260809T1809Z-260809T2015Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Northern Indiana 209 PM EDT Sun Aug 9 2026 The National Weather Service in Northern Indiana has issued a * Special Marine Warning for... Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.... Michigan City IN to New Buffalo MI... New Buffalo MI to St Joseph MI... * Until 415 PM EDT. * At 208 PM EDT, strong thunderstorms were located along a line extending from 22 nm east of Winthrop Harbor to near Wilmette Harbor to 6 nm north of Aurora, moving east at 30 knots. HAZARD...Wind gusts to 40 knots and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... New Buffalo, Michigan City, and New Buffalo PRECAUTIONARY/PREPAREDNESS ACTIONS... && LAT...LON 4179 8696 4179 8697 4212 8696 4213 8657 4211 8649 4194 8658 4189 8662 4180 8675 4179 8676 4172 8691 TIME...MOT...LOC 1808Z 289DEG 23KT 4245 8729 4211 8768 4187 8827 HAIL...<.75IN WIND...40KTS $$ MARSILI  921 FZUS73 KMKX 091816 MWSMKX Marine Weather Statement National Weather Service Milwaukee/Sullivan WI 116 PM CDT Sun Aug 9 2026 LMZ669-671-673-091826- /O.CAN.KMKX.MA.W.0063.000000T0000Z-260809T1845Z/ 116 PM CDT Sun Aug 9 2026 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Lake Michigan from Sheboygan WI to Wind Point WI 5 nm off shore to mid lake... The thunderstorms have moved out of the warned area and no longer pose a significant threat to boaters. && LAT...LON 4247 8750 4273 8706 4246 8702 TIME...MOT...LOC 1816Z 295DEG 20KT 4264 8705 4247 8739 $$ LMZ675-091845- /O.CON.KMKX.MA.W.0063.000000T0000Z-260809T1845Z/ 116 PM CDT Sun Aug 9 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 145 PM CDT... For the following areas... Lake Michigan from Wind Point WI TO Winthrop Harbor IL 5 nm off shore to mid lake... At 116 PM CDT, strong thunderstorms were located along a line extending from 32 nm east of Wind Pt. to 18 nm east of Winthrop Harbor, moving southeast at 20 knots. HAZARD...Wind gusts 34 knots or greater and small hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Strong thunderstorms will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Thunderstorms can produce sudden waterspouts. Waterspouts can easily overturn boats and create locally hazardous seas. Seek safe harbor immediately. Frequent lightning is occurring with these storms. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && LAT...LON 4247 8750 4273 8706 4246 8702 TIME...MOT...LOC 1816Z 295DEG 20KT 4264 8705 4247 8739 HAIL...<.75IN WIND...>34KTS $$ GEHRING  233 FZUS73 KGRR 091819 MWSGRR Marine Weather Statement National Weather Service Grand Rapids MI 219 PM EDT Sun Aug 9 2026 LMZ847-848-870-872-091829- /O.CAN.KGRR.MA.W.0064.000000T0000Z-260809T2015Z/ 219 PM EDT Sun Aug 9 2026 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Nearshore and Open Waters from Grand Haven to Pentwater MI... The thunderstorms have weakened and moved out of the warned area and no longer pose a significant threat to boaters. A Severe Thunderstorm Watch remains in effect until 700 PM EDT for southwestern Michigan...and the adjacent waters of Lake Michigan. LAT...LON 4213 8656 4212 8696 4306 8710 4306 8625 4273 8621 4261 8623 4234 8630 4211 8649 TIME...MOT...LOC 1819Z 272DEG 30KT 4304 8680 4276 8672 4202 8761 $$ LMZ844>846-874-876-878-092015- /O.CON.KGRR.MA.W.0064.000000T0000Z-260809T2015Z/ 219 PM EDT Sun Aug 9 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 415 PM EDT... For the following areas... Nearshore and Open Waters from St Joseph to Grand Haven MI... At 219 PM EDT, strong thunderstorms were located along a line extending from 23 nm southwest of Muskegon Light to 22 nm west of Holland Light to near Montrose Harbor, moving east at 30 knots. HAZARD...Wind gusts to nearly 50 knots and small hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... South Haven Light, St. Joseph Light, Grand Haven Light, and St. Joseph. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4213 8656 4212 8696 4306 8710 4306 8625 4273 8621 4261 8623 4234 8630 4211 8649 TIME...MOT...LOC 1819Z 272DEG 30KT 4304 8680 4276 8672 4202 8761 HAIL...<.75IN WIND...49KTS $$ NJJ  707 WWUS53 KLOT 091825 SVSLOT Severe Weather Statement National Weather Service Chicago/Romeoville 125 PM CDT Sun Aug 9 2026 ILC089-091835- /O.CAN.KLOT.SV.W.0222.000000T0000Z-260809T1900Z/ Kane IL- 125 PM CDT Sun Aug 9 2026 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL KANE COUNTY IS CANCELLED... The storms which prompted the warning have weakened. Therefore, the warning has been cancelled. A Severe Thunderstorm Watch remains in effect until 200 PM CDT for northeastern Illinois. && LAT...LON 4206 8767 4203 8767 4190 8762 4189 8761 4187 8762 4182 8760 4187 8826 4193 8826 4215 8797 4215 8776 TIME...MOT...LOC 1825Z 273DEG 30KT 4214 8768 4203 8791 4189 8821 $$ ILC031-043-091900- /O.CON.KLOT.SV.W.0222.000000T0000Z-260809T1900Z/ DuPage IL-Cook IL- 125 PM CDT Sun Aug 9 2026 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM CDT FOR NORTHERN DUPAGE AND NORTHERN COOK COUNTIES... At 125 PM CDT, severe thunderstorms were located along a line extending from near Winnetka to Des Plaines to West Chicago, moving east at 35 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Chicago, Cicero, Arlington Heights, Evanston, Schaumburg, Palatine, Skokie, Des Plaines, Berwyn, Mount Prospect, Wheaton, Hoffman Estates, Oak Park, Glenview, Elmhurst, Lombard, Buffalo Grove, Bartlett, Ohare Airport, Streamwood, Carol Stream, Hanover Park, Wheeling, Park Ridge, and Addison. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4206 8767 4203 8767 4190 8762 4189 8761 4187 8762 4182 8760 4187 8826 4193 8826 4215 8797 4215 8776 TIME...MOT...LOC 1825Z 273DEG 30KT 4214 8768 4203 8791 4189 8821 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Carlaw  931 FZUS74 KLIX 091828 MWSLIX Marine Weather Statement National Weather Service New Orleans LA 128 PM CDT Sun Aug 9 2026 GMZ570-091915- 128 PM CDT Sun Aug 9 2026 A Marine Weather Statement has been issued for the following areas... Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM... At 128 PM CDT, Doppler radar indicated a strong thunderstorm, capable of producing winds to around 30 knots and weak waterspouts. This thunderstorm was located 23 nm east of Ship Shoal 198, or 27 nm south of Isle Derniers, moving northwest at 10 knots. Mariners can expect gusty winds to around 30 knots, locally higher waves and dangerous lightning strikes. Boaters should seek safe harbor immediately until this activity passes. Brief, weak waterspouts are possible with this activity. Remain on alert in case warnings are issued for waterspout development. && LAT...LON 2873 9107 2871 9097 2870 9081 2865 9071 2848 9079 2857 9115 $$ 95/DM  450 WUUS53 KLOT 091836 SVRLOT ILC043-089-093-197-091930- /O.NEW.KLOT.SV.W.0223.260809T1836Z-260809T1930Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Chicago/Romeoville 136 PM CDT Sun Aug 9 2026 The National Weather Service in Chicago has issued a * Severe Thunderstorm Warning for... Northeastern Kendall County in northeastern Illinois... Northwestern Will County in northeastern Illinois... Southeastern Kane County in northeastern Illinois... Southern DuPage County in northeastern Illinois... * Until 230 PM CDT. * At 136 PM CDT, a severe thunderstorm was located over North Aurora, or near Aurora, moving east at 25 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Aurora, Naperville, Bolingbrook, Wheaton, Downers Grove, Lombard, Romeoville, Plainfield, Woodridge, Oswego, Glen Ellyn, West Chicago, Batavia, Geneva, Yorkville, Hinsdale, Lemont, Burr Ridge, Oak Brook, Westmont, Lisle, Darien, Montgomery, North Aurora, and Warrenville. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4185 8792 4172 8791 4169 8796 4169 8803 4163 8803 4173 8858 4188 8836 TIME...MOT...LOC 1836Z 273DEG 24KT 4180 8837 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Carlaw  531 WUUS53 KGRR 091837 SVRGRR MIC005-139-092000- /O.NEW.KGRR.SV.W.0112.260809T1837Z-260809T2000Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Grand Rapids MI 237 PM EDT Sun Aug 9 2026 The National Weather Service in Grand Rapids has issued a * Severe Thunderstorm Warning for... Allegan County in southwestern Michigan... Ottawa County in southwestern Michigan... * Until 400 PM EDT. * At 237 PM EDT, severe thunderstorms were located along a line extending from 21 miles west of Grand Haven to 14 miles west of Holland SP to 26 miles northwest of South Haven, moving east at 35 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Holland... Grand Haven... Allegan... Hudsonville... Zeeland... Coopersville... Wayland... Otsego... Plainwell... Fennville... Saugatuck... Martin... Beechwood... Jenison... Allendale... Dorr... Ganges... Hamilton... Douglas... Port Sheldon... PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4270 8620 4295 8622 4305 8624 4307 8579 4277 8578 4277 8555 4242 8555 4242 8627 TIME...MOT...LOC 1837Z 269DEG 31KT 4297 8662 4279 8649 4259 8673 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...0.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ NJJ  658 FZUS73 KLOT 091856 MWSLOT Marine Weather Statement National Weather Service Chicago/Romeoville 156 PM CDT Sun Aug 9 2026 LMZ777-092000- 156 PM CDT Sun Aug 9 2026 ...STRONG THUNDERSTORMS OVER THE WATERS... The areas affected include... Open Waters from Winthrop Harbor to Wilmette Harbor out to Mid Lake... At 156 PM CDT, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots. These thunderstorms were located along a line extending from 24 nm northwest of St. Joseph Light to 20 nm northeast of Harrison-Dever Crib, moving east at 20 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. && LAT...LON 4212 8697 4212 8737 4236 8700 $$ Carlaw  691 WWUS53 KLOT 091858 SVSLOT Severe Weather Statement National Weather Service Chicago/Romeoville 158 PM CDT Sun Aug 9 2026 ILC031-043-091907- /O.EXP.KLOT.SV.W.0222.000000T0000Z-260809T1900Z/ DuPage IL-Cook IL- 158 PM CDT Sun Aug 9 2026 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN DUPAGE AND NORTHERN COOK COUNTIES WILL EXPIRE AT 200 PM CDT... 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 will be allowed to expire. However, gusty winds and heavy rain are still possible with these thunderstorms. A Severe Thunderstorm Watch remains in effect until 400 PM CDT for northeastern Illinois. && LAT...LON 4206 8767 4203 8767 4190 8762 4189 8761 4187 8762 4182 8760 4187 8826 4193 8826 4215 8797 4215 8776 TIME...MOT...LOC 1857Z 270DEG 34KT 4214 8728 4203 8751 4189 8781 $$ Doom  605 FZUS73 KLOT 091859 MWSLOT Marine Weather Statement National Weather Service Chicago/Romeoville 159 PM CDT Sun Aug 9 2026 LMZ740-777-091909- /O.EXP.KLOT.MA.W.0064.000000T0000Z-260809T1900Z/ 159 PM CDT Sun Aug 9 2026 ...THE SPECIAL MARINE WARNING WILL EXPIRE AT 200 PM CDT... The affected areas were... Nearshore Waters from Winthrop Harbor to Wilmette Harbor... Open Waters from Winthrop Harbor to Wilmette Harbor out to Mid Lake... The thunderstorms have weakened and moved out of the warned area, and no longer pose a significant threat to boaters. A Severe Thunderstorm Watch remains in effect until 400 PM CDT for the adjacent waters of Lake Michigan. && LAT...LON 4246 8702 4212 8696 4211 8760 4208 8768 4214 8775 4227 8783 4248 8780 TIME...MOT...LOC 1859Z 277DEG 33KT 4261 8640 4233 8687 4210 8728 $$ Doom