National Weather Service United States Department of Commerce

Major Winter Storm Ongoing in the Upper Midwest; Severe Weather Tonight from the Mid-South to the Ohio Valley

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through Monday across the Upper Midwest and Upper Great Lakes. A line of storms will be capable of producing widespread damaging winds, tornadoes, and some large hail from the Mid-South to the Ohio Valley and the Southeast through tonight, moving into the Mid-Atlantic 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. 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


980
FTUS46 KSEW 160305 AAB
TAFSEA
TAF AMD
KSEA 160305Z 1603/1706 VRB04KT P6SM -RA OVC025
FM160600 17005KT 6SM -RA BR OVC025
FM161200 18011KT P6SM -RA OVC025
FM162000 21010KT P6SM OVC030
FM162300 21012KT P6SM OVC050=
 
 

816
FTUS46 KSEW 152320
TAFBFI
TAF
KBFI 152320Z 1600/1624 25006KT P6SM -RA SCT070 OVC090
FM160100 15006KT P6SM -RA OVC045
FM160600 15005KT P6SM -RA OVC030
FM161200 16008KT P6SM -RA OVC025
FM162000 17007KT P6SM OVC030=
 
 
   

818
FTUS46 KSEW 152320
TAFPAE
TAF
KPAE 152320Z 1600/1624 16007KT P6SM -RA OVC050
FM160100 14008KT P6SM -RA BKN025 OVC050
FM160600 15012KT 4SM -RA OVC015
FM161800 15010KT 2SM -RA BR OVC007
FM162100 15008KT P6SM OVC015=