SPC
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
SPC Severe Thunderstorm Watch 577
WW 577 SEVERE TSTM IA IL MO 310845Z – 311400Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 577 NWS Storm Prediction Center Norman OK 345 AM CDT Wed Jul 31 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southeast Iowa Western and Northwest Illinois Northeast Missouri * Effective this Wednesday morning from 345 AM until 900 AM CDT. * Primary threats include... Scattered damaging wind gusts to 70 mph likely Scattered large hail events to 1.5 inches in diameter possible SUMMARY...A cluster of storms will likely persist and potentially further intensify across southern Iowa into northeast Missouri and west/northwest Illinois this morning, with damaging winds and some hail possible. The severe thunderstorm watch area is approximately along and 55 statute miles north and south of a line from 65 miles west northwest of Burlington IA to 25 miles east southeast of Burlington IA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). 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... 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 30035. ...Guyer
SPC Severe Thunderstorm Watch 576
WW 576 SEVERE TSTM IA NE 310455Z – 311200Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 576 NWS Storm Prediction Center Norman OK 1155 PM CDT Tue Jul 30 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and Western Iowa Eastern Nebraska * Effective this Tuesday night and Wednesday morning from 1155 PM until 700 AM CDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter likely Scattered damaging wind gusts to 70 mph likely A tornado or two possible SUMMARY...Thunderstorms are expected to form during the overnight hours across eastern Nebraska and western Iowa, tracking across the watch area. Very unstable conditions will promote a risk of a few severe storms capable of large hail and damaging winds. The severe thunderstorm watch area is approximately along and 60 statute miles north and south of a line from 50 miles west of Tekamah NE to 25 miles north of Ottumwa IA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU6). 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 575... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 28030. ...Hart
