* WHAT…Very cold wind chill temperatures as low as 30 below
expected.
* WHERE…The Interstate 90 Corridor between Bozeman and Whitehall,
The Madison and Beaverhead River Valleys, Upper Blackfoot and
MacDonald Pass, Elkhorn and Boulder Mountains, Northwest
Beaverhead County, and Ruby Mountains and Southern Beaverhead
Mountains.
* WHEN…From midnight tonight to 11 AM MST Sunday.
* IMPACTS…These cold wind chill temperatures could cause frostbite
on exposed skin in as little as 30 minutes.
* ADDITIONAL DETAILS…The coldest temperatures will be in the Big
Hole Valley and the Elk Park area.
SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK…
No watches are valid as of Mon Apr 21 12:35:01 UTC 2025.
No Mesoscale Discussions are in effect as of Mon Apr 21 12:35:01 UTC 2025.
Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0307 AM…
* AFFECTED AREA...Fire Weather Zones 242, 244, 246, 247, 248, 249, 250 and 251. *…
* WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Trinity County. *…
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