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Strong to severe thunderstorms are expected to develop late this afternoon through early evening, initially across west-central/northern-central Idaho as well as western Montana and interior Washington. The strongest storms will be capable of large hail and locally damaging winds, and over time, some semi-organized storm clusters could evolve into northern Idaho and eastern Washington later this evening as storms spread north-northwestward.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 249
NWS Storm Prediction Center Norman OK
320 PM PDT Thu May 28 2026
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northern Idaho
Western Montana
Central and Eastern Washington
* Effective this Thursday afternoon from 320 PM until Midnight
PDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Strong to severe thunderstorms are expected to develop
late this afternoon through early evening, initially across
west-central/northern-central Idaho as well as western Montana and
interior Washington. The strongest storms will be capable of large
hail and locally damaging winds, and over time, some semi-organized
storm clusters could evolve into northern Idaho and eastern
Washington later this evening as storms spread north-northwestward.
The severe thunderstorm watch area is approximately along and 180
statute miles east and west of a line from 100 miles north northeast
of Spokane WA to 50 miles east southeast of Walla Walla WA. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU9).
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 248...
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 500. Mean storm motion vector
13025.
...Guyer
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