Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

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
105 FTUS46 KSEW 181731 TAFSEA TAF KSEA 181731Z 1818/1924 33004KT P6SM FEW100 SCT200 FM190200 01005KT P6SM SCT200 FM190900 04007KT P6SM BKN150 BKN200 FM191800 34007KT P6SM SCT150 BKN200=
106 FTUS46 KSEW 181731 TAFBFI TAF KBFI 181731Z 1818/1918 30004KT P6SM FEW100 SCT200 FM190200 35003KT P6SM SCT200 FM190900 00000KT P6SM BKN150 BKN200=

104 FTUS46 KSEW 181731 TAFPAE TAF KPAE 181731Z 1818/1918 VRB04KT P6SM FEW120 SCT200 FM182100 21005KT P6SM SCT200 FM190600 04004KT P6SM SCT200 FM190900 04005KT P6SM BKN150 BKN200=

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Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Puget Sound Convergence Zone