Red Flag Warning

Locations Affected

Bend, OR ∙ Brothers, OR ∙ Battle Creek Mountain, OR ∙ Deschutes River Woods, OR ∙ Terrebonne, OR ∙ Bear Creek Buttes, OR ∙ Fossil, OR ∙ Lake Simtustus, OR ∙ Powell Butte, OR ∙ Antelope, OR

Headline

...UNSTABLE CONDITIONS CONTINUE, WITH THUNDERSTORMS DEVELOPING ONCE AGAIN TONIGHT AND SUNDAY...
.Unstable conditions will persist once again today, before an oncoming weather system shifts the threat from instability to that of thunderstorms. Clearing has been observed across central Oregon, and with that, scattered thunderstorms are expected to develop this evening. Storms are expected to develop over the eastern mountains tomorrow afternoon as well, however forecast confidence remains on the lower end, so will hold off on upgrading the watch there for now.

Full Alert Message

URGENT - FIRE WEATHER MESSAGE National Weather Service Pendleton OR 132 PM PDT Sat Sep 7 2024 ...UNSTABLE CONDITIONS CONTINUE, WITH THUNDERSTORMS DEVELOPING ONCE AGAIN TONIGHT AND SUNDAY... .Unstable conditions will persist once again today, before an oncoming weather system shifts the threat from instability to that of thunderstorms. Clearing has been observed across central Oregon, and with that, scattered thunderstorms are expected to develop this evening. Storms are expected to develop over the eastern mountains tomorrow afternoon as well, however forecast confidence remains on the lower end, so will hold off on upgrading the watch there for now. ...RED FLAG WARNING NOW IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONE OR640... The National Weather Service in Pendleton has issued a Red Flag Warning for abundant lightning, which is in effect until 11 PM PDT this evening. The previous Red Flag Warning for dry and unstable conditions is no longer in effect. * AFFECTED AREA...Fire Weather Zone 640 Central Mountains of Oregon. * TIMING...Now through Saturday evening. * RELATIVE HUMIDITY...As low as 12 percent. * TEMPERATURES...Up to 90. * IMPACTS...New fire starts, as well as rapid fire spread due to outflow winds. * ADDITIONAL INFORMATION...Light shower activity and cloud cover this morning has brought the Haines Index in the area below critical thresholds. Dry thunderstorms are now the primary critical fire weather threat for the zone. * THUNDERSTORMS...Scattered thunderstorms producing abundant lightning and gusty outflow winds. Storms are expected to be dry in nature. * OUTFLOW WINDS...Storms may be capable of producing outflow winds up to and over 40 mph. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. &&

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