NOAA
SPC Severe Thunderstorm Watch 581
WW 581 SEVERE TSTM MN WI LS 311910Z – 010000Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 581 NWS Storm Prediction Center Norman OK 210 PM CDT Wed Jul 31 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast Minnesota Far Northwest Wisconsin Lake Superior * Effective this Wednesday afternoon and evening from 210 PM until 700 PM CDT. * Primary threats include... Scattered damaging winds likely with isolated significant gusts to 75 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...A well-organized, bowing complex of thunderstorms should continue to pose a threat for mainly severe/damaging winds up to around 65-75 mph as it moves quickly east-northeastward this afternoon and early evening. The severe thunderstorm watch area is approximately along and 50 statute miles east and west of a line from 40 miles northwest of Hibbing MN to 75 miles south southwest of Duluth MN. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 579...WW 580... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 26040. ...Gleason
SPC Severe Thunderstorm Watch 580
WW 580 SEVERE TSTM IL IN KY 311755Z – 010000Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 580 NWS Storm Prediction Center Norman OK 155 PM EDT Wed Jul 31 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Far Southeast Illinois Southern Indiana Western and Central Kentucky * Effective this Wednesday afternoon and evening from 155 PM until 800 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph likely SUMMARY...A developing cluster of thunderstorms should continue to strengthen and pose a threat for mainly severe/damaging winds up to 55-70 mph as it moves east-southeastward this afternoon and early evening. The severe thunderstorm watch area is approximately along and 50 statute miles north and south of a line from 40 miles north of Evansville IN to 20 miles east northeast of Lexington KY. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 579... AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 30035. ...Gleason
SPC Severe Thunderstorm Watch 579
WW 579 SEVERE TSTM MN ND SD 311715Z – 010000Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 579 NWS Storm Prediction Center Norman OK 1215 PM CDT Wed Jul 31 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western and Central Minnesota Southeast North Dakota Central and Eastern South Dakota * Effective this Wednesday afternoon and evening from 1215 PM until 700 PM CDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 80 mph likely Scattered large hail likely with isolated very large hail events to 2.5 inches in diameter possible A tornado or two possible SUMMARY...Multiple clusters of thunderstorms will likely produce scattered to numerous severe/damaging winds up to 65-80 mph this afternoon as they move east-northeastward. Supercells should develop and pose a greater threat for severe hail generally around 1.5-2.5 inches in diameter, especially in parts of central to northeast South Dakota. A tornado or two also appears possible. The severe thunderstorm watch area is approximately along and 75 statute miles north and south of a line from 90 miles west southwest of Aberdeen SD to 50 miles northeast of Alexandria MN. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && AVIATION...A few severe thunderstorms with hail surface and aloft to 2.5 inches. Extreme turbulence and surface wind gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27035. ...Gleason
SPC – No watches are valid as of Wed Jul 31 17:02:02 UTC 2024
No watches are valid as of Wed Jul 31 17:02:02 UTC 2024.
SPC Severe Thunderstorm Watch 578
WW 578 SEVERE TSTM IL 311050Z – 311700Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 578 NWS Storm Prediction Center Norman OK 550 AM CDT Wed Jul 31 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and South-Central Illinois * Effective this Wednesday morning from 550 AM until NOON CDT. * Primary threats include... Scattered damaging wind gusts to 70 mph likely Isolated large hail events to 1.5 inches in diameter possible SUMMARY...A cluster of storms will move southeastward across the region this morning with wind damage possible. The severe thunderstorm watch area is approximately along and 65 statute miles north and south of a line from 65 miles west northwest of Springfield IL to 35 miles east of Mattoon IL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU8). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 576...WW 577... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 30040. ...Guyer
