National Weather Service United States Department of Commerce

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. 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


134
FTUS46 KSEW 181603 AAB
TAFSEA
TAF AMD
KSEA 181603Z 1816/1918 19005KT P6SM BKN010
FM181900 22006KT P6SM SCT010
FM190500 21004KT P6SM SCT250
FM191100 20003KT P6SM OVC008
FM191700 23005KT P6SM BKN011=
 
 

135
FTUS46 KSEW 181603 AAB
TAFBFI
TAF AMD
KBFI 181603Z 1816/1912 17007KT P6SM BKN012
FM181900 22006KT P6SM SCT012
FM190500 23004KT P6SM SCT250
FM191100 19003KT P6SM BKN013=
 
 
   

773
FTUS46 KSEW 181446 AAB
TAFPAE
TAF AMD
KPAE 181446Z 1815/1912 19004KT 2SM BR OVC003
FM181800 20006KT P6SM BKN010
FM181900 24007KT P6SM SCT010
FM190200 33004KT P6SM SKC
FM191100 VRB03KT 5SM BR BKN006=