896
WWUS86 KPQR 022105
RFWPQR

URGENT - FIRE WEATHER MESSAGE
National Weather Service Portland OR
205 PM PDT Tue Sep 2 2025

ORZ688-031200-
/O.UPG.KPQR.FW.A.0004.250903T1900Z-250904T0400Z/
/O.EXB.KPQR.FW.W.0006.250903T1900Z-250904T0400Z/
Mt. Hood National Forest Region-
205 PM PDT Tue Sep 2 2025

...RED FLAG WARNING IN EFFECT FROM NOON TO 9 PM PDT WEDNESDAY FOR
DRY THUNDERSTORMS FOR FIRE WEATHER ZONE 688...

The National Weather Service in Portland has issued a Red Flag
Warning for thunderstorms, which is in effect from noon to 9 PM
PDT Wednesday. The Fire Weather Watch is no longer in effect.

* AFFECTED AREA...In Oregon, Fire Weather Zone 688 Mt. Hood
  National Forest Region.

* THUNDERSTORMS...A 15 to 20% chance of dry thunderstorms. Storms
  may produce very little rainfall, increasing the risk of new
  fire starts from dry lightning.

* 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 over ongoing fires.

* 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 new fire starts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of the
above conditions can contribute to extreme fire behavior.

&&

$$

WAZ634-635-031200-
/O.UPG.KPQR.FW.A.0004.250903T1900Z-250904T0400Z/
/O.EXB.KPQR.FW.W.0006.250903T1900Z-250904T0400Z/
Southern Gifford Pinchot National Forest-
Mt. Adams Ranger District of the Gifford-Pinchot National Forest-
205 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 634 AND
635...

The National Weather Service in Portland has issued a Red Flag
Warning for thunderstorms, which is in effect from noon to 9 PM
PDT Wednesday. The Fire Weather Watch is no longer in effect.

* AFFECTED AREA...In Washington, Fire Weather Zone 634 Southern
  Gifford Pinchot National Forest and Fire Weather Zone 635 Mt.
  Adams Ranger District of the Gifford-Pinchot National Forest.

* DRY AND UNSTABLE...Unstable conditions with elevated mixing
  heights may promote pyroconvective activity over ongoing fires.
  Relative humidities as low as 20%. Temperatures up to 90 to 95.

* IMPACTS...Conditions may be favorable for rapid fire spread
  which may threaten life and property. High instability may
  result in fire growth.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of the
above conditions can contribute to extreme fire behavior.

&&

$$

ORZ689-690-031200-
/O.CON.KPQR.FW.W.0006.000000T0000Z-250904T0400Z/
Northern Willamette National Forest-
Southern Willamette National Forest-
205 PM PDT Tue Sep 2 2025

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT WEDNESDAY
FOR DRY THUNDERSTORMS FOR FIRE WEATHER ZONES 689 AND 690...

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

* THUNDERSTORMS...A 20 to 30% chance of dry thunderstorms. Storms
  may produce very little rainfall, increasing the risk of new
  fire starts from dry lightning.

* 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 over ongoing fires.

* IMPACTS...Conditions will 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 new fire starts.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of the
above conditions can contribute to extreme fire behavior.

&&

$$

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