Watches and Warnings
SPC Severe Thunderstorm Watch 666
WW 666 SEVERE TSTM MD PA VA WV 311725Z – 312300Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 666 NWS Storm Prediction Center Norman OK 125 PM EDT Sat Aug 31 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western Maryland Southwest Pennsylvania Northwest Virginia West Virginia * Effective this Saturday afternoon and evening from 125 PM until 700 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Thunderstorms are expected to increase in coverage and move east across the watch area through the afternoon, posing a risk for scattered damaging wind gusts and isolated instances of large hail. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 40 miles northwest of Altoona PA to 10 miles southwest of Beckley WV. 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. && 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 550. Mean storm motion vector 26025. ...Bunting
SPC – No watches are valid as of Sat Aug 31 01:02:01 UTC 2024
No watches are valid as of Sat Aug 31 01:02:01 UTC 2024.
SPC Severe Thunderstorm Watch 665
WW 665 SEVERE TSTM MI LE LH 302045Z – 310100Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 665 NWS Storm Prediction Center Norman OK 445 PM EDT Fri Aug 30 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southeast Lower Michigan Lake Erie Lake Huron * Effective this Friday afternoon and evening from 445 PM until 900 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1.5 inches in diameter possible A tornado or two possible SUMMARY...Thunderstorms are expected to intensify across the watch area through early evening, posing a risk for strong/damaging wind gusts and isolated instances of large hail. A tornado or two will also be possible. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 30 miles northwest of Bad Axe MI to 20 miles west southwest of Ann Arbor MI. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU5). 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 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 26025. ...Bunting
SPC – No watches are valid as of Fri Aug 30 04:02:01 UTC 2024
No watches are valid as of Fri Aug 30 04:02:01 UTC 2024.
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