National Weather Service United States Department of Commerce

Lingering Winter Weather in Interior New England; Snow Squalls Developing Downwind of the Lower Great Lakes

A wintry mix will continue in interior New England through tonight as a coastal storm quickly passes to the east. Heavy snow is expected in northern Maine, with a coating of ice expected for much of interior New England. Behind this storm system, lake effect snow and snow squalls will develop from the Ohio Valley to interior New England through Monday. 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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942
FTUS46 KSEW 170520
TAFSEA
TAF
KSEA 170520Z 1706/1812 02015KT P6SM SCT020 SCT250
FM170800 04009KT P6SM OVC018
FM171000 05008KT 4SM BR SCT005
FM171800 03005KT P6SM FEW250
FM180500 03004KT P6SM FEW010 SCT250=
 
 

946
FTUS46 KSEW 170520
TAFBFI
TAF
KBFI 170520Z 1706/1806 04005KT P6SM SCT025 SCT250
FM170800 02003KT P6SM OVC020
FM171000 02005KT 2SM BR OVC005
FM171800 04005KT P6SM FEW250=
 
 
   

966
FTUS46 KSEW 170520
TAFPAE
TAF
KPAE 170520Z 1706/1806 01005KT P6SM SCT020 SCT250
FM170800 01004KT 3SM BR OVC009
FM171000 01003KT 1/2SM FG OVC002
FM171700 03003KT 6SM BR SCT003=