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
647 FTUS46 KSEW 211720 TAFSEA TAF KSEA 211720Z 2118/2224 02005KT P6SM BKN250 FM212300 33008KT P6SM SCT250 FM220600 01006KT P6SM FEW250 FM221300 36003KT P6SM SKC=
645 FTUS46 KSEW 211720 TAFBFI TAF KBFI 211720Z 2118/2218 00000KT P6SM BKN250 FM212000 31006KT P6SM SCT250 FM220600 00000KT P6SM FEW250 FM221600 31003KT P6SM SKC=

661 FTUS46 KSEW 211720 TAFPAE TAF KPAE 211720Z 2118/2218 36004KT P6SM BKN250 FM212000 31006KT P6SM SCT250 FM220600 36003KT P6SM FEW250 FM221500 35003KT P6SM SKC=