Watches and Warnings
SPC Severe Thunderstorm Watch 664
WW 664 SEVERE TSTM IA MN WI 300050Z – 300400Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 664 NWS Storm Prediction Center Norman OK 750 PM CDT Thu Aug 29 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Extreme northeast Iowa Extreme southeast Minnesota Southwest and west central Wisconsin * Effective this Thursday evening from 750 PM until 1100 PM CDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1 inch in diameter possible A tornado or two possible SUMMARY...A line of storms with a history of wind damage will continue eastward for the next few hours before weakening. An isolated tornado or two, as well as marginally severe hail, will also be possible with the more intense/embedded segments. The severe thunderstorm watch area is approximately along and 25 statute miles east and west of a line from 105 miles north northeast of La Crosse WI to 55 miles south of La Crosse WI. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU4). 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 662...WW 663... 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 26030. ...Thompson
SPC Severe Thunderstorm Watch 663
WW 663 SEVERE TSTM DC MD PA VA WV CW 291955Z – 300300Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 663 NWS Storm Prediction Center Norman OK 355 PM EDT Thu Aug 29 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of District Of Columbia Maryland South-Central Pennsylvania Northern Virginia Far Eastern West Virginia Coastal Waters * Effective this Thursday afternoon and evening from 355 PM until 1100 PM EDT. * Primary threats include... Scattered damaging wind gusts to 65 mph possible SUMMARY...Scattered storms will continue to increase, intensify, and potentially organize as they persist through early/mid-evening, with localized wind damage and some hail possible. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 50 miles north northwest of Harrisburg PA to 20 miles south of Staunton VA. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU3). 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 662... AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 55 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 29020. ...Guyer
SPC Severe Thunderstorm Watch 662
WW 662 SEVERE TSTM IA MN WI LS 291935Z – 300200Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 662 NWS Storm Prediction Center Norman OK 235 PM CDT Thu Aug 29 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northwest Iowa Minnesota Western and Northwest Wisconsin Lake Superior * Effective this Thursday afternoon and evening from 235 PM until 900 PM CDT. * Primary threats include... Scattered damaging wind gusts to 70 mph likely Scattered large hail and isolated very large hail events to 2 inches in diameter possible A tornado or two possible SUMMARY...Storms will continue to intensify and move east-northeastward across the region through late afternoon and early evening. Damaging winds and isolated large hail are expected to be the most common hazards, although some tornado threat may also exist near a warm front. The severe thunderstorm watch area is approximately along and 65 statute miles east and west of a line from 45 miles northwest of Ely MN to 35 miles southwest of Fairmont MN. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU2). 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 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 24030. ...Guyer
SPC – No watches are valid as of Thu Aug 29 04:02:01 UTC 2024
No watches are valid as of Thu Aug 29 04:02:01 UTC 2024.
SPC Tornado Watch 661
WW 661 TORNADO ND SD 282140Z – 290400Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 661 NWS Storm Prediction Center Norman OK 440 PM CDT Wed Aug 28 2024 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of South central North Dakota North central South Dakota * Effective this Wednesday afternoon and evening from 440 PM until 1100 PM CDT. * Primary threats include... A few tornadoes possible Scattered large hail and isolated very large hail events to 3 inches in diameter likely Scattered damaging wind gusts to 70 mph possible SUMMARY...Supercell development is expected soon near the central North Dakota/South Dakota border, with additional storm development in the next 1-3 hours farther north and south in the watch area. The storm environment initially favors supercells with tornadoes and very large hail (up to 3 inches in diameter), while some clustering of storms later this evening will lead to some increase in the potential for damaging winds of 60-70 mph. The tornado watch area is approximately along and 60 statute miles east and west of a line from 40 miles east northeast of Garrison ND to 80 miles south southeast of Mobridge SD. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and 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. && AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 3 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 600. Mean storm motion vector 25015. ...Thompson
SPC – No watches are valid as of Wed Aug 28 04:31:01 UTC 2024
No watches are valid as of Wed Aug 28 04:31:01 UTC 2024.