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
718 FTUS46 KSEW 152332 TAFSEA TAF KSEA 152332Z 1600/1706 31012G20KT P6SM VCTS BKN035CB PROB30 1600/1603 5SM -TSRA BKN040CB FM160300 18005KT P6SM VCSH BKN027 OVC050 FM161000 19005KT P6SM BKN025 BKN050 FM161900 22006KT P6SM BKN050 FM162300 22008KT P6SM BKN100=
717 FTUS46 KSEW 152332 TAFBFI TAF KBFI 152332Z 1600/1624 35010G18KT P6SM VCTS BKN040CB PROB30 1600/1603 5SM -TSRA BKN040CB FM160300 18003KT P6SM VCSH BKN025 OVC050 FM161200 16005KT P6SM OVC025 FM161800 18005KT P6SM BKN050=

772 FTUS46 KSEW 152332 TAFPAE TAF KPAE 152332Z 1600/1624 34006KT P6SM VCTS BKN007 BKN040CB PROB30 1600/1603 4SM -TSRA OVC040CB FM160300 30005KT P6SM VCSH SCT025 BKN045 FM160800 20005KT P6SM OVC050 FM161100 19006KT P6SM BKN007 OVC015 FM161700 21005KT P6SM BKN025 FM162000 23007KT P6SM BKN050=