798
WWUS86 KPQR 312029
RFWPQR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Portland OR
129 PM PDT Sun Aug 31 2025

ORZ689-690-011200-
/O.NEW.KPQR.FW.A.0003.250902T2100Z-250903T0300Z/
Northern Willamette National Forest-
Southern Willamette National Forest-
129 PM PDT Sun Aug 31 2025

...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
TUESDAY EVENING FOR THUNDERSTORMS AND UNSTABLE CONDITIONS FOR
FIRE WEATHER ZONES 689 AND 690...

The National Weather Service in Portland has issued a Fire
Weather Watch for thunderstorms and unstable conditions, which is
in effect from 2 PM to 8 PM PDT Tuesday.

* AFFECTED AREA...In Oregon, Fire Weather Zone 689 Northern
  Willamette National Forest and Fire Weather Zone 690 Southern
  Willamette National Forest.

* THUNDERSTORMS...Isolated to scattered thunderstorms. 10-20%
  chance of thunderstorms.

* OUTFLOW WINDS...Instantaneous gusts as high as 40 mph. Gusts at
  these speeds can be observed tens of miles away from the core of
  the thunderstorm.

* DRY AND UNSTABLE...Unstable conditions with elevated mixing
  heights may promote pyroconvective activity.

* IMPACTS...Conditions may be favorable for rapid fire spread
  which may threaten life and property. Thunderstorm outflow winds
  may result in unanticipated erratic fire spread. High
  instability may result in fire growth. Frequent lightning and
  critically dry fuels may result in fire starts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Fire Weather Watch means that critical fire weather conditions
are forecast to occur. Listen for later forecasts and possible
Red Flag Warnings.

&&

$$

For more information visit: https://www.weather.gov/portland