National Weather Service United States Department of Commerce

Heat Persists in the South Central U.S. and California; Heavy Rain in the Ohio Valley

Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest and California this week with limited nighttime relief. Heavy rainfall will lead to localized areas of flash flooding in parts of the Ohio Valley/Central Appalachians. Dry and breezy conditions will enhance fire weather concerns across the northern Rockies and High Plains. 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


984
FTUS46 KSEW 100306 AAA
TAFSEA
TAF AMD
KSEA 100306Z 1003/1106 35008KT P6SM SCT150 SCT250
FM100600 02004KT P6SM SCT150 BKN200
FM101400 06005KT P6SM SCT020 BKN024
FM102000 36006KT P6SM SCT027 BKN035
FM102300 35007KT P6SM SCT040 SCT130
FM110500 04003KT P6SM SCT060=
 
 

806
FTUS46 KSEW 092320
TAFBFI
TAF
KBFI 092320Z 1000/1024 31006KT P6SM SCT250
FM100600 02003KT P6SM SCT150
FM101400 06005KT P6SM SCT013 BKN024
FM102000 34006KT P6SM SCT027 BKN035
FM102300 35007KT P6SM SCT040 SCT130=
 
 
   

832
FTUS46 KSEW 092320
TAFPAE
TAF
KPAE 092320Z 1000/1024 34006KT P6SM FEW250
FM100600 05006KT P6SM BKN180
FM101400 36008KT P6SM BKN015 BKN022
FM102000 35006KT P6SM BKN035
FM102300 36006KT P6SM SCT040=