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
686 FTUS46 KSEW 031120 TAFSEA TAF KSEA 031120Z 0312/0418 21005KT P6SM BKN015 OVC040 FM031500 21005KT 6SM BR BKN008 OVC015 FM031800 22005KT P6SM OVC025 FM032000 24007KT P6SM BKN045 FM040200 30006KT P6SM SCT050 BKN100 FM040900 21005KT P6SM OVC025=
690 FTUS46 KSEW 031120 TAFBFI TAF KBFI 031120Z 0312/0412 18005KT P6SM OVC028 FM031500 22005KT 6SM BR BKN008 OVC015 FM031800 22005KT P6SM OVC025 FM032000 25007KT P6SM BKN045 FM040100 30006KT P6SM SCT050 BKN100 FM040900 18003KT P6SM OVC025=

702 FTUS46 KSEW 031120 TAFPAE TAF KPAE 031120Z 0312/0412 21004KT P6SM OVC015 FM031500 21004KT 5SM BR SCT004 OVC008 FM031700 24004KT P6SM OVC012 FM032200 33006KT P6SM SCT027 BKN035 FM040900 36005KT P6SM OVC025=