National Weather Service United States Department of Commerce

Areas of Severe Thunderstorms and Excessive Rainfall Today

Scattered severe thunderstorms are possible across parts of the Ohio Valley and Mid-Atlantic this afternoon and evening. Strong to severe wind gusts capable of producing wind damage should be the primary hazard, but isolated hail may also occur. Thunderstorms may bring heavy to excessive rainfall and possible flooding today over the northern Gulf Coast and upper Ohio Valley. 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


046
FTUS46 KSEW 271720
TAFSEA
TAF
KSEA 271720Z 2718/2824 36006KT P6SM FEW060 SCT130 SCT200
FM271900 34011KT P6SM SCT200
FM280400 02007KT P6SM SCT200
FM281100 01004KT P6SM SCT200
FM281800 29008KT P6SM SCT200=
 
 

235
FTUS46 KSEW 271720
TAFBFI
TAF
KBFI 271720Z 2718/2818 VRB03KT P6SM SCT130 SCT200
FM272000 33008KT P6SM SCT200
FM280600 VRB04KT P6SM SCT200=
 
 
   

060
FTUS46 KSEW 271720
TAFPAE
TAF
KPAE 271720Z 2718/2818 30003KT P6SM SCT200
FM271900 33005KT P6SM SCT050 SCT200
FM272200 34007KT P6SM FEW050 SCT200
FM280300 35005KT P6SM SCT200=