Red Flag Warning
Issued by NWS Portland, OR
Issued by NWS Portland, OR
280 WWUS86 KPQR 031020 RFWPQR URGENT - FIRE WEATHER MESSAGE National Weather Service Portland OR 320 AM PDT Wed Sep 3 2025 ORZ689-690-040400- /O.CON.KPQR.FW.W.0006.000000T0000Z-250904T0400Z/ Northern Willamette National Forest- Southern Willamette National Forest- 320 AM PDT Wed Sep 3 2025 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM PDT THIS EVENING FOR 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 15 to 25% chance of dry thunderstorms. Storms may produce very little rainfall, increasing the risk fo 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. && $$ ORZ688-040400- /O.CON.KPQR.FW.W.0006.250903T1900Z-250904T0400Z/ Mt. Hood National Forest Region- 320 AM PDT Wed Sep 3 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM PDT THIS EVENING FOR THUNDERSTORMS FOR FIRE WEATHER ZONE 688... * AFFECTED AREA...In Oregon, Fire Weather Zone 688 Mt. Hood National Forest Region. * THUNDERSTORMS...A 15 to 20% chance of dry thunderstorms. Storms may produce very little rainfall, increasing the risk of new fire starts from dry lightning. * OUTFLOW WINDS...Instantaneous gusts as high as 40 mph. Gusts at these speeds can be observed tens of miles away from the core of the thunderstorm. * DRY AND UNSTABLE...Unstable conditions with elevated mixing heights may promote pyroconvective activity over ongoing fires. * IMPACTS...Conditions may be favorable for rapid fire spread which may threaten life and property. Thunderstorm outflow winds may result in unanticipated erratic fire spread. High instability may result in fire growth. Frequent lightning and critically dry fuels may result in new fire starts. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of the above conditions can contribute to extreme fire behavior. && $$ WAZ634-635-040400- /O.CON.KPQR.FW.W.0006.250903T1900Z-250904T0400Z/ Southern Gifford Pinchot National Forest- Mt. Adams Ranger District of the Gifford-Pinchot National Forest- 320 AM PDT Wed Sep 3 2025 ...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM PDT THIS EVENING FOR DRY AND UNSTABLE CONDITIONS FOR FIRE WEATHER ZONES 634 AND 635... * 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 degrees. * 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. && $$ For more information visit: https://www.weather.gov/portland