289
WWUS86 KSEW 212115
RFWSEW

URGENT - FIRE WEATHER MESSAGE
National Weather Service Seattle WA
215 PM PDT Thu Aug 21 2025

WAZ658-659-221000-
/O.NEW.KSEW.FW.A.0002.250823T1800Z-250825T0300Z/
West Slopes of the North Cascades Generally above 1500 Feet-
West Slopes of the Central Cascades Generally above 1500 Feet-
215 PM PDT Thu Aug 21 2025

...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SUNDAY EVENING FOR HOT, DRY AND UNSTABLE CONDITIONS FOR FIRE
WEATHER ZONES 658 AND 659...

The National Weather Service in Seattle has issued a Fire Weather
Watch for hot, dry and unstable conditions, which is in effect
from Saturday morning through Sunday evening.

* 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 13 percent.

* TEMPERATURES...Up to 99.

* 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 Fire Weather Watch means that there is a potential for critical
fire weather conditions to develop. Monitor the forecasts for
possible Red Flag Warnings.

&&

$$

WAZ661-221000-
/O.NEW.KSEW.FW.A.0002.250823T1800Z-250824T0400Z/
East Portion of the Olympic Mountains-
215 PM PDT Thu Aug 21 2025

...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY MORNING THROUGH
SATURDAY EVENING FOR HOT, DRY AND UNSTABLE CONDITIONS FOR FIRE
WEATHER ZONE 661...

The National Weather Service in Seattle has issued a Fire Weather
Watch for hot, dry and unstable conditions, which is in effect
from Saturday morning through Saturday evening.

* AFFECTED AREA...Fire Weather Zone 661 East Portion of the
  Olympic Mountains.

* RELATIVE HUMIDITY...As low as 25 percent in isolated areas.

* TEMPERATURES...Up to 88.

* 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 Fire Weather Watch means that there is a potential for critical
fire weather conditions to develop. Monitor the forecasts for
possible Red Flag Warnings.

&&

$$