National Weather Service United States Department of Commerce

Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. 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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628
FTUS46 KSEW 192320
TAFSEA
TAF
KSEA 192320Z 2000/2106 02005KT P6SM FEW200
FM200600 01005KT P6SM VCFG FEW001 FEW200
FM201000 00000KT 1/4SM FG BKN001
FM201800 04006KT P6SM FEW200=
 
 

635
FTUS46 KSEW 192320
TAFBFI
TAF
KBFI 192320Z 2000/2024 06004KT P6SM FEW200
FM200600 09003KT P6SM VCFG FEW001 FEW200
FM201000 00000KT 1/4SM FG BKN001
FM202000 04006KT P6SM FEW200=
 
 
   

650
FTUS46 KSEW 192320
TAFPAE
TAF
KPAE 192320Z 2000/2024 01003KT P6SM FEW200
FM200700 02003KT 1/4SM FG VV001
FM201700 02004KT P6SM VCFG FEW001
FM201900 02005KT P6SM FEW200=