SPC Severe Thunderstorm Watch 659

SPC Severe Thunderstorm Watch 659

WW 659 SEVERE TSTM ID MT 292055Z – 300300Z

Severe Thunderstorm Watch Number 659
NWS Storm Prediction Center Norman OK
255 PM MDT Tue Aug 29 2023

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Northeast Idaho
Southwest Montana

* Effective this Tuesday afternoon and evening from 255 PM until
900 PM MDT.

* Primary threats include…
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1 inch in diameter possible

SUMMARY…Scattered thunderstorms will form and spread northeastward
across northeast Idaho and southwest Montana through late evening.
Storm clusters and short line segments will be capable of producing
damaging outflow gusts of 60-70 mph and isolated large hail up to 1
inch in diameter.

The severe thunderstorm watch area is approximately along and 75
statute miles east and west of a line from 55 miles west northwest
of Drummond MT to 45 miles southeast of Salmon ID. For a complete
depiction of the watch see the associated watch outline update


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 inch. 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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