539
WWUS86 KSEW 030241
RFWSEW

URGENT - FIRE WEATHER MESSAGE
National Weather Service Seattle WA
741 PM PDT Tue Sep 2 2025

WAZ658-659-031200-
/O.CON.KSEW.FW.W.0004.250903T1900Z-250904T0400Z/
West Slopes of the North Cascades Generally above 1500 Feet-
West Slopes of the Central Cascades Generally above 1500 Feet-
741 PM PDT Tue Sep 2 2025

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM PDT
WEDNESDAY FOR HOT, DRY AND UNSTABLE CONDITIONS FOR FIRE WEATHER
ZONES 658 AND 659...

* AFFECTED AREA...Fire Weather Zone 658 West Slopes of the North
  Cascades Generally above 1500 Feet and Fire Weather Zone 659
  West Slopes of the Central Cascades Generally above 1500 Feet.

* RELATIVE HUMIDITY...As low as 20 percent.

* TEMPERATURES...Up to 90.

* STABILITY...Unstable conditions can be expected.

* IMPACTS...A dry and unstable air mass with warm temperatures
  can contribute to active fire behavior. In western Washington,
  significant growth on existing fires takes place under such
  conditions. If a fire were to begin, air quality may diminish
  in the surrounding area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either imminent or occurring now. Any fires that develop will
likely spread quickly. Outdoor burning is not recommended.

&&

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