682
WWUS86 KPDT 240038
RFWPDT

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pendleton OR
538 PM PDT Sat Aug 23 2025

...HOT, DRY, AND UNSTABLE CONDITIONS EXPECTED IN CENTRAL OREGON OVER
THE NEXT TWO DAYS...

.Hot conditions, combined with low relative humidities and an
unstable air mass, have the potential to create significant,
plume-dominated fire growth in the area surrounding the Flat Fire.
Unstable conditions will relent overnight, however relative
humidity recoveries are expected to be poor.

ORZ700-704-242200-
/O.NEW.KPDT.FW.W.0016.250824T1900Z-250826T0400Z/
Central Mountains of Oregon-Northern Deschutes National Forest-
538 PM PDT Sat Aug 23 2025

...RED FLAG WARNING IN EFFECT FROM NOON SUNDAY TO 9 PM PDT MONDAY
FOR HOT, DRY, AND UNSTABLE CONDITIONS FOR FIRE WEATHER ZONES
OR700 AND OR704...

The National Weather Service in Pendleton has issued a Red Flag
Warning for hot, dry, and unstable conditions, which is in effect
from noon Sunday to 9 PM PDT Monday.

* AFFECTED AREA...Eastern portion of Fire Weather Zones 700
  Central Mountains of Oregon and western portion of 704 Northern
  Deschutes National Forest, primarily including areas around the
  Flat Fire.

* TIMING...From noon Sunday to 9 PM PDT Monday.

* MIXING HEIGHT...As high as 8,000 ft AGL Sunday and 11,500 ft
  AGL Monday.

* RELATIVE HUMIDITY...As low as 15 percent.

* IMPACTS...A dry and unstable air mass with warm temperatures can
  contribute to active fire behavior.

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.

&&

$$