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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FTUS46 KSEW 240520
TAFSEA
TAF
KSEA 240520Z 2406/2512 02007KT P6SM SKC
FM241300 03005KT P6SM FEW015
FM241900 02004KT P6SM SKC
FM242100 35006KT P6SM FEW250
FM250300 04004KT P6SM SKC=
 
 

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FTUS46 KSEW 240520
TAFBFI
TAF
KBFI 240520Z 2406/2506 VRB04KT P6SM SKC
FM241300 00000KT P6SM FEW015
FM241900 31004KT P6SM FEW250
FM250300 VRB03KT P6SM SKC=
 
 
   

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FTUS46 KSEW 240520
TAFPAE
TAF
KPAE 240520Z 2406/2506 VRB03KT P6SM SKC
FM241500 VRB03KT 6SM BR FEW010
FM241900 34004KT P6SM FEW250
FM250300 VRB03KT P6SM SKC=