Month: August 2024

SPC Severe Thunderstorm Watch 647

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WW 647 SEVERE TSTM NE SD 252215Z – 260500Z
WW 0647 Image

 URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 647
NWS Storm Prediction Center Norman OK
515 PM CDT Sun Aug 25 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of North-central Nebraska Southeast and East-central South Dakota * Effective this Sunday afternoon from 515 PM until Midnight CDT. * Primary threats include... Scattered damaging winds and isolated significant gusts to 75 mph possible Scattered large hail and isolated very large hail events to 2 inches in diameter possible SUMMARY...Thunderstorms should intensify this evening while posing a
threat for large hail around 1-2 inches in diameter, along with
severe/damaging winds up to 65-75 mph. This threat should continue
through much of the evening as this activity spreads
east-northeastward. The severe thunderstorm watch area is approximately along and 50
statute miles east and west of a line from 15 miles north northeast
of Huron SD to 30 miles east southeast of Ainsworth NE. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU7). 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 646... AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
26025. ...Gleason

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SPC Severe Thunderstorm Watch 646

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WW 646 SEVERE TSTM CO UT WY 251920Z – 260200Z
WW 0646 Image

 URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 646
NWS Storm Prediction Center Norman OK
120 PM MDT Sun Aug 25 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western Colorado Eastern Utah Southern Wyoming * Effective this Sunday afternoon and evening from 120 PM until 800 PM MDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Scattered damaging wind gusts to 70 mph possible SUMMARY...Scattered storms, including some supercells, will continue
to develop and increase across the region, with large hail and
severe-caliber wind gusts possible through early/mid-evening. The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 50 miles north northeast
of Rock Springs WY to 45 miles south southwest of Blanding UT. 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
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 450. Mean storm motion vector
23030. ...Guyer

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