691
WWUS86 KSEW 022049
RFWSEW

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

WAZ658-659-030500-
/O.UPG.KSEW.FW.A.0004.250903T1900Z-250904T0400Z/
/O.NEW.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-
149 PM PDT Tue Sep 2 2025

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

The National Weather Service in Seattle has upgraded the Fire
Weather Watch to a Red Flag Warning for hot, dry and unstable
conditions, which is in effect from noon to 9 PM PDT Wednesday.

* 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.

&&

$$