National Weather Service United States Department of Commerce

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast 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 .





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


872
FTUS46 KSEW 121727
TAFSEA
TAF
KSEA 121727Z 1218/1324 VRB04KT P6SM SKC
FM122100 28005KT P6SM SKC
FM130300 VRB04KT P6SM SCT250
FM130600 14003KT P6SM SCT250
FM131200 16004KT P6SM OVC100
FM131800 20005KT P6SM OVC100=
 
 

879
FTUS46 KSEW 121727
TAFBFI
TAF
KBFI 121727Z 1218/1318 VRB03KT P6SM SKC
FM122000 29005KT P6SM SKC
FM130200 00000KT P6SM SCT250
FM130800 14002KT P6SM SCT250
FM131100 15004KT P6SM OVC100=
 
 
   

874
FTUS46 KSEW 121727
TAFPAE
TAF
KPAE 121727Z 1218/1318 23004KT P6SM SKC
FM122000 29005KT P6SM SKC
FM130200 VRB04KT P6SM SCT250
FM130700 12003KT P6SM SCT100
FM130900 15004KT P6SM OVC100=