SPC
SPC Severe Thunderstorm Watch 675
WW 675 SEVERE TSTM CO KS NE WY 172055Z – 180300Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 675 NWS Storm Prediction Center Norman OK 255 PM MDT Tue Sep 17 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast and East-Central Colorado Northwest Kansas Western Nebraska Eastern Wyoming * Effective this Tuesday afternoon and evening from 255 PM until 900 PM MDT. * Primary threats include... Widespread damaging winds likely with isolated significant gusts to 80 mph possible Isolated large hail events to 1 inch in diameter possible SUMMARY...High-based convection should gradually increase in coverage and intensity as it spreads northeastward across the central High Plains this afternoon and evening. Numerous strong to severe wind gusts should be the main threat with this activity, with the highest gusts potentially reaching up to 70-80 mph. The severe thunderstorm watch area is approximately along and 80 statute miles east and west of a line from 35 miles south southwest of Burlington CO to 60 miles north northeast of Torrington WY. 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. && OTHER WATCH INFORMATION...CONTINUE...WW 674... AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 24040. ...Gleason
SPC Severe Thunderstorm Watch 674
WW 674 SEVERE TSTM CO NM 171845Z – 180100Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 674 NWS Storm Prediction Center Norman OK 1245 PM MDT Tue Sep 17 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of South-Central and Southeast Colorado Eastern New Mexico * Effective this Tuesday afternoon and evening from 1245 PM until 700 PM MDT. * 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...Thunderstorms that have developed over the higher terrain of the southern/central Rockies will continue to move quickly east-northeastward this afternoon and early evening. They should also intensify over the next several hours while posing a threat for mainly severe damaging winds up to 65-75 mph. Isolated large hail around 1-1.5 inches in diameter may also occur. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 35 miles east northeast of Pueblo CO to 5 miles southwest of Roswell NM. 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. && 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 24040. ...Gleason
SPC – No watches are valid as of Tue Sep 17 05:02:01 UTC 2024
No watches are valid as of Tue Sep 17 05:02:01 UTC 2024.
SPC Severe Thunderstorm Watch 673
WW 673 SEVERE TSTM MN ND 170005Z – 170500Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 673 NWS Storm Prediction Center Norman OK 705 PM CDT Mon Sep 16 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northwest Minnesota North-central and Northeast North Dakota * Effective this Monday night from 705 PM until Midnight CDT. * Primary threats include... Scattered damaging wind gusts to 65 mph possible Scattered large hail events to 1.5 inches in diameter possible A tornado or two possible SUMMARY...Scattered storms will continue to develop and intensify this evening near and north of a boundary, with at least isolated instances of large hail and damaging winds as the primary hazards. The severe thunderstorm watch area is approximately along and 45 statute miles north and south of a line from 105 miles west of Devils Lake ND to 45 miles southeast of Warroad MN. 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. && AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 55 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 23030. ...Guyer
SPC – No watches are valid as of Fri Sep 13 02:42:01 UTC 2024
No watches are valid as of Fri Sep 13 02:42:01 UTC 2024.
SPC Severe Thunderstorm Watch 672
WW 672 SEVERE TSTM MT ND 122235Z – 130400Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 672 NWS Storm Prediction Center Norman OK 435 PM MDT Thu Sep 12 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeastern and Eastern Montana Western North Dakota * Effective this Thursday afternoon and evening from 435 PM until 1000 PM MDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 85 mph likely Scattered large hail events to 1.5 inches in diameter possible SUMMARY...Scattered thunderstorms will continue to develop and intensify late this afternoon and evening and spread northeast into the Watch area. The stronger thunderstorms, including a mix of cells and linear clusters, will be potentially capable of a severe threat. Severe gusts will probably be the primary severe hazard (60-85 mph), but large hail may accompany the stronger thunderstorm cores as well (1 to 1.5 inches in diameter). The severe thunderstorm watch area is approximately along and 85 statute miles north and south of a line from 35 miles west southwest of Glasgow MT to 55 miles northeast of Dickinson ND. 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. && OTHER WATCH INFORMATION...CONTINUE...WW 670...WW 671... AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 75 knots. A few cumulonimbi with maximum tops to 400. Mean storm motion vector 21050. ...Smith