SPC Severe Thunderstorm Watch 665

SPC Severe Thunderstorm Watch 665

WW 665 SEVERE TSTM ID WY 031955Z – 040400Z

Severe Thunderstorm Watch Number 665
NWS Storm Prediction Center Norman OK
155 PM MDT Sun Sep 3 2023

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Southern and Eastern Idaho
Western Wyoming

* Effective this Sunday afternoon and evening from 155 PM until
1000 PM MDT.

* Primary threats include…
Scattered damaging wind gusts to 70 mph possible
Scattered large hail events to 1.5 inches in diameter possible

SUMMARY…Widely scattered thunderstorms will continue to intensify
across the region, potentially including a few supercells given a
very moist air mass and strong winds aloft. Storms should become
more scattered/numerous by late afternoon and early evening, with
continued large hail and severe wind gust potential as storms move
northeastward across the region.

The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 45 miles north of Jackson
WY to 20 miles southwest of Malad City ID. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS


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



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


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