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
841 FTUS46 KSEW 101403 AAA TAFSEA TAF AMD KSEA 101403Z 1014/1118 22005KT P6SM SCT025 BKN050 BKN150 FM101800 23008KT P6SM SCT025 SCT060 FM110800 22005KT P6SM SCT025 BKN035=
978 FTUS46 KSEW 101521 AAB TAFBFI TAF AMD KBFI 101521Z 1015/1112 VRB03KT P6SM SCT025 OVC060 TEMPO 1015/1017 BKN020 FM101800 21005KT P6SM SCT025 SCT060 FM102300 26006KT P6SM BKN060 FM110800 20003KT P6SM SCT025 BKN035=

865 FTUS46 KSEW 101454 AAA TAFPAE TAF AMD KPAE 101454Z 1015/1112 36005KT P6SM SCT007 OVC060 TEMPO 1015/1016 BKN007 FM101900 30007KT P6SM SCT025 BKN040 FM102300 35008KT P6SM BKN060 FM111000 36005KT P6SM BKN025=