National Weather Service United States Department of Commerce

Strong to Severe Thunderstorms Continue Tonight in the East; Early Heat Wave in the West

Scattered strong to severe storms with damaging winds and potentially a tornado or two are expected tonight from the coastal Carolinas into the Mid-Atlantic states. An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. 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 .





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Wind Barbs, PIREPs, Radar, 10nm Range Rings, all sites except CWOP


598
FTUS46 KSEW 162324
TAFSEA
TAF
KSEA 162324Z 1700/1806 21008KT P6SM SCT050 BKN100
FM170400 19010G20KT P6SM VCSH BKN150
FM170700 18009KT P6SM VCSH OVC070
FM171000 20008KT P6SM -RA OVC040
FM171700 18009KT P6SM -SHRA OVC020
FM180000 19008KT 4SM -RA BR OVC015=
 
 

600
FTUS46 KSEW 162324
TAFBFI
TAF
KBFI 162324Z 1700/1724 17010KT P6SM SCT050 BKN100
FM170400 18008KT P6SM VCSH BKN150
FM171000 17008KT P6SM -RA OVC040
FM171700 17008KT P6SM -SHRA OVC025=
 
 
   

604
FTUS46 KSEW 162324
TAFPAE
TAF
KPAE 162324Z 1700/1724 16015G25KT P6SM OVC070
FM170100 08012KT P6SM OVC050
FM170700 17018G26KT P6SM -SHRA OVC050
FM171300 15014KT P6SM -RA OVC025
FM171600 16018G25KT P6SM -SHRA OVC019=