SPC
SPC Severe Thunderstorm Watch 670
WW 670 SEVERE TSTM MT WY 121855Z – 130100Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 670 NWS Storm Prediction Center Norman OK 1255 PM MDT Thu Sep 12 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southeast Montana Northeast Wyoming * Effective this Thursday afternoon and evening from 1255 PM until 700 PM MDT. * Primary threats include... Scattered damaging winds likely with isolated significant gusts to 75 mph possible Scattered large hail events to 1.5 inches in diameter possible A tornado or two possible SUMMARY...At least widely scattered severe storms including supercells will initially develop generally near the Montana/Wyoming border vicinity this afternoon, spreading northeastward through the afternoon. The severe thunderstorm watch area is approximately along and 80 statute miles east and west of a line from 60 miles east southeast of Worland WY to 25 miles north of Miles City MT. 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. && 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 450. Mean storm motion vector 22040. ...Guyer
SPC – No watches are valid as of Thu Sep 12 18:02:02 UTC 2024
No watches are valid as of Thu Sep 12 18:02:02 UTC 2024.
SPC Tornado Watch 669
WW 669 TORNADO AL FL CW 121050Z – 121800Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 669 NWS Storm Prediction Center Norman OK 550 AM CDT Thu Sep 12 2024 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Southern Alabama Florida Panhandle Coastal Waters * Effective this Thursday morning and afternoon from 550 AM until 100 PM CDT. * Primary threats include... A few tornadoes possible SUMMARY...As Francine's center continues moving northward over MS and weakens further through midday (per NHC forecast), a slot of wind/moisture/instability fields favorable for supercells and a few tornadoes will shift slowly northward/inland as well. The tornado watch area is approximately along and 60 statute miles north and south of a line from 35 miles west southwest of Evergreen AL to 35 miles south southeast of Marianna FL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). 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. && OTHER WATCH INFORMATION...This tornado watch replaces tornado watch number 668. Watch number 668 will not be in effect after 550 AM CDT. AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0 inches. Extreme turbulence and surface wind gusts to 50 knots. A few cumulonimbi with maximum tops to 450. Mean storm motion vector 16030. ...Edwards
SPC Tornado Watch 668
WW 668 TORNADO AL FL LA MS CW 120310Z – 121100Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 668 NWS Storm Prediction Center Norman OK 1010 PM CDT Wed Sep 11 2024 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Southwest Alabama Florida Panhandle Southeast Louisiana Southern Mississippi Coastal Waters * Effective this Wednesday night and Thursday morning from 1010 PM until 600 AM CDT. * Primary threats include... A couple tornadoes possible SUMMARY...A few transient small supercells within the convective bands of Francine will pose a risk for a couple of tornadoes tonight into the early morning across the Watch area. This threat will gradually spread northward and inland tonight. The tornado watch area is approximately along and 55 statute miles north and south of a line from 55 miles northwest of Slidell LA to 65 miles southeast of Crestview FL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU8). 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. && OTHER WATCH INFORMATION...CONTINUE...WW 667... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 0 inches. Extreme turbulence and surface wind gusts to 50 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 13020. ...Smith
SPC Tornado Watch 667
WW 667 TORNADO LA MS CW 111740Z – 120400Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 667 NWS Storm Prediction Center Norman OK 1240 PM CDT Wed Sep 11 2024 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Southern Louisiana Far Southern Mississippi Coastal Waters * Effective this Wednesday afternoon and evening from 1240 PM until 1100 PM CDT. * Primary threats include... Several tornadoes likely SUMMARY...Hurricane Francine will continue to approach the southern Louisiana coast and move inland as it progresses northeastward across the region through tonight. The potential for tornadoes is expected to increase through the afternoon and early evening. The tornado watch area is approximately along and 70 statute miles north and south of a line from 60 miles west southwest of Houma LA to 40 miles east southeast of Gulfport MS. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU7). 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 0 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 16045. ...Guyer
