Puget Sound Convergence Zone

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 .


Hover over or click station to get METAR and TAF (if available)	Wind Barbs, PIREPs, Radar, 10nm Range Rings, all sites except CWOP
333 FTUS46 KSEW 101403 AAA TAFSEA TAF AMD KSEA 101403Z 1014/1118 15008KT P6SM BKN040 OVC060 FM101500 16009KT 6SM -SHRA OVC035 FM101700 17010G20KT 5SM -SHRA SCT015 OVC020 FM110200 18009KT P6SM VCSH OVC035 FM110700 16010KT P6SM OVC045=
786 FTUS46 KSEW 101125 TAFBFI TAF KBFI 101125Z 1012/1112 15005KT P6SM BKN050 OVC100 FM101500 16008KT 6SM -SHRA OVC035 FM101700 16010G20KT 5SM -SHRA OVC015 FM102300 16008KT P6SM VCSH OVC025 FM110200 15009KT P6SM VCSH OVC035 FM110700 15007KT P6SM OVC050=

702 FTUS46 KSEW 101404 AAA TAFPAE TAF AMD KPAE 101404Z 1014/1112 14008KT P6SM BKN200 FM101600 21012G25KT 5SM -SHRA BKN015 OVC025 FM102300 15016G25KT 2SM -RA BR SCT030 OVC050 FM110600 14016G25KT P6SM OVC050=