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
334 FTUS46 KSEW 120527 TAFSEA TAF KSEA 120527Z 1206/1312 22024G38KT P6SM -SHRA BKN010 OVC025 FM120700 22018G30KT P6SM VCSH OVC010 FM121100 22015G26KT P6SM VCSH OVC020 FM121900 23012G22KT 5SM -SHRA BR OVC015 FM122200 20010KT 6SM -SHRA BR OVC025 FM130200 22006KT P6SM -SHRA OVC020=
335 FTUS46 KSEW 120527 TAFBFI TAF KBFI 120527Z 1206/1306 24014G25KT P6SM VCSH BKN015 OVC025 FM121200 22015G26KT P6SM -SHRA OVC022 FM121900 23010G20KT 5SM -SHRA OVC025 FM122200 20008KT 6SM -SHRA BR OVC030 FM130200 18004KT P6SM -SHRA OVC025=

387 FTUS46 KSEW 120527 TAFPAE TAF KPAE 120527Z 1206/1306 20025G35KT P6SM -RA BKN015 FM120900 32017G25KT P6SM VCSH SCT008 OVC015 FM121400 24008KT P6SM -SHRA BKN010 OVC020 FM121800 23006KT 3SM -SHRA BR SCT007 OVC012 FM130100 19004KT 5SM -SHRA BR SCT010 OVC015=