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
374 FTUS46 KSEW 121512 AAB TAFSEA TAF AMD KSEA 121512Z 1215/1318 20008KT P6SM BKN020 BKN045 FM121600 27003KT P6SM SCT020 SCT250 FM122300 36010KT P6SM SCT250 FM130500 03006KT P6SM FEW250 FM131200 02003KT P6SM FEW030 FM131700 36006KT P6SM FEW250=
373 FTUS46 KSEW 121512 AAB TAFBFI TAF AMD KBFI 121512Z 1215/1312 20006KT P6SM BKN025 BKN045 FM121600 30002KT P6SM SCT030 BKN060 FM122300 34009KT P6SM SCT250 FM130500 03005KT P6SM FEW250=

697 FTUS46 KSEW 121513 AAC TAFPAE TAF AMD KPAE 121513Z 1215/1312 01004KT 2SM -RA BR BKN009 FM121700 33004KT P6SM SCT035 BKN050 FM130000 35011KT P6SM SCT250 FM130500 36006KT P6SM SCT250 FM131100 35003KT P6SM FEW008 SCT020=