Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

Weather Impact Levels

Lightning	Tornado	Prevailing Wind	TS wind and/or Hail	Inland Flood	Coastal Flood	Surf & Rip Current	Waves	Visibility	Heat/Cold

Heat and Cold Hazard

Resources
	About Heat Index About Wind Chill

Legend (Click for Impacts)
None	No extreme temperatures.
Slight	Wind Chill 26-35 or Temp. near 32 in pockets; Heat Index 100 to 104 across wide area.
Moderate	Wind Chill 16 to 25 or Temp. 26-32; Heat Index 105 to 109 across wide area.
High	Wind Chill 1 to 15 or Temp 20 to 25; or Heat Index 110 to 114 across wide area.
Extreme	Wind Chill ≤0 or Temp <20; or Heat Index ≥115 across wide area.

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Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

Graphical Hazardous Weather Outlook - Temperature