National Weather Service United States Department of Commerce

Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. 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.





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


604
FTUS46 KSEW 261619 AAD
TAFSEA
TAF AMD
KSEA 261619Z 2616/2718 26003KT P6SM SCT009 OVC015
FM261800 21005KT P6SM OVC020
FM262000 23004KT P6SM SCT025 BKN250
FM270200 30005KT P6SM SCT250=
 
 

407
FTUS46 KSEW 261619 AAB
TAFBFI
TAF AMD
KBFI 261619Z 2616/2712 00000KT P6SM OVC018
FM262000 23005KT P6SM SCT035 BKN250
FM270200 30005KT P6SM SCT250=
 
 
   

840
FTUS46 KSEW 261512 AAA
TAFPAE
TAF AMD
KPAE 261512Z 2615/2712 36004KT P6SM OVC021
FM261800 24005KT P6SM SCT025 BKN250
FM262300 28006KT P6SM SKC
FM270100 34007KT P6SM SKC=