Red Flag Warning issued July 22 at 9:18PM PDT until July 23 at 8:00PM PDT by NWS Pendleton OR

…The upper level low offshore will shift to the east just
enough to allow for monsoonal moisture to move into the region.
Instability will accompany the moisture and allow for increased
chances of isolated to scattered thunderstorms across central
Oregon and portions of the eastern mountains. Brief heavy
downpours, gusty outflow winds, small hail, and frequent lightning
will be possible…

* AFFECTED AREA…Fire Weather Zone 698 Southern Blue Mountains.

* TIMING…For the first Red Flag Warning, until 11 PM PDT this
evening. For the second Red Flag Warning, from 11 AM to 8 PM
PDT Thursday.

* IMPACTS…Any fire that develops will catch and spread
quickly. Outdoor burning is not recommended.

* THUNDERSTORMS…Isolated to scattered dry thunderstorms after
11 AM today.

* OUTFLOW WINDS…Gusts from 25-45 mph
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.