National Weather Service United States Department of Commerce

Critical Fire Weather Conditions in the Plains; Heavy Snow in the Sierra and Northern Rockies

Gusty winds and warm, very dry conditions will lead to a Critical Risk of fire weather across much of the High Plains through Thursday. A Pacific storm system will bring strong winds and precipitation from the Pacific Northwest to the Northern Rockies, with heavy mountain snow in the Sierra-Nevada and northern Rockies. Heavy snow will continue in the northern Rockies on Thursday. Read More >

A Puget Sound Convergence Zone (PSCZ) forms when strong westerly winds flow around the Olympic Peninsula and converge over Puget Sound. It generally forms north of Seattle, and may move southward to as far as Boeing Field or SeaTac Airport. A PSCZ can cause a narrow band of convective precipitation along it, which can include rain showers, thunderstorms, or snowfall. Strong south to southwest winds are to the south of the PSCZ and north to northwest winds to the north. More model information for the winds around SeaTac can be found on the SeaTac Wind Page .





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Wind Barbs, PIREPs, Radar, 10nm Range Rings, all sites except CWOP


044
FTUS46 KSEW 221503 AAB
TAFSEA
TAF AMD
KSEA 221503Z 2215/2318 21008KT 6SM -RA BR OVC006
FM221700 21010KT 6SM BR SCT008 BKN012
FM222100 20011G20KT P6SM VCSH BKN018 OVC035
FM230300 20010KT P6SM BKN040
FM231300 19011KT P6SM OVC030=
 
 

968
FTUS46 KSEW 221127
TAFBFI
TAF
KBFI 221127Z 2212/2312 16004KT 5SM -RA BR BKN008 OVC020
FM221600 20006KT 5SM -SHRA BR SCT008 OVC018
FM222100 19009G18KT P6SM VCSH BKN022 OVC040
FM230100 19009KT P6SM BKN045
FM230700 17010KT P6SM OVC050=
 
 
   

104
FTUS46 KSEW 221350 AAA
TAFPAE
TAF AMD
KPAE 221350Z 2214/2312 30003KT 2SM RA BR FEW004 OVC014
TEMPO 2214/2216 BKN004
FM221700 31003KT 6SM -SHRA BR SCT004 OVC009
FM222200 19009KT P6SM VCSH BKN018 OVC030
FM230200 18011KT P6SM OVC040
FM230700 17010KT P6SM OVC015=