National Weather Service United States Department of Commerce

Heavy Rain is Likely Across the Mid-Atlantic States Today Along With Potentially Damaging Wind Gusts; Critical Fire Weather in the Great Basin

Scattered strong to severe thunderstorms are expected today across the Mid-Atlantic and forecast to contain heavy to excessive rainfall. Numerous instances of flash flooding are possible in southern Virginia and north-central North Carolina. Severe thunderstorms are also possible across the northern Great Plains today. Elevated to Critical Fire Weather located across the Intermountain West. 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.





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


096
FTUS46 KSEW 091120
TAFSEA
TAF
KSEA 091120Z 0912/1018 22008KT P6SM BKN017 OVC030
FM091400 20010G18KT P6SM VCSH OVC012
FM091900 20011G18KT P6SM -SHRA OVC020
FM100000 23009G16KT P6SM VCSH OVC027
FM100400 12006KT P6SM VCSH OVC035
FM101100 19007KT P6SM VCSH OVC027
FM101600 23005KT P6SM VCSH OVC013=
 
 

112
FTUS46 KSEW 091120
TAFBFI
TAF
KBFI 091120Z 0912/1012 20007KT P6SM OVC030
FM091400 21009G18KT P6SM VCSH OVC015
FM091900 18011G20KT P6SM -SHRA OVC020
FM092300 23008G16KT P6SM VCSH OVC035
FM100300 15005KT P6SM VCSH OVC035
FM101100 19005KT P6SM VCSH OVC027=
 
 
   

415
FTUS46 KSEW 091120
TAFPAE
TAF
KPAE 091120Z 0912/1012 17010KT P6SM VCSH BKN018 OVC022
FM091500 17012G16KT P6SM -SHRA OVC010
FM092200 34010KT P6SM VCSH OVC020
FM100200 04009KT P6SM VCSH OVC025
FM101000 06005KT P6SM VCSH OVC022=