SPC Severe Thunderstorm Watch 672

WW 672 SEVERE TSTM MT ND 122235Z – 130400Z
WW 0672 Image

 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 

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SPC Tornado Watch 671

WW 671 TORNADO AL 122135Z – 130300Z
WW 0671 Image

 URGENT - IMMEDIATE BROADCAST REQUESTED
Tornado Watch Number 671
NWS Storm Prediction Center Norman OK
435 PM CDT Thu Sep 12 2024 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Central Alabama * Effective this Thursday afternoon and evening from 435 PM until 1000 PM CDT. * Primary threats include... A couple tornadoes possible SUMMARY...A convective band within a moist and strongly sheared
environment will feature embedded quasi-discrete updrafts late this
afternoon into the evening. Several supercells will potentially
pose a tornado risk before instability wanes late this evening. The tornado watch area is approximately along and 55 statute miles
north and south of a line from 55 miles northwest of Selma AL to 45
miles northeast of Montgomery AL. 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. && OTHER WATCH INFORMATION...CONTINUE...WW 670... 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 400. Mean
storm motion vector 20020. ...Smith 

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SPC Severe Thunderstorm Watch 670

WW 670 SEVERE TSTM MT WY 121855Z – 130100Z
WW 0670 Image

 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 

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