Red Flag Warning issued August 2 at 2:43PM PDT until August 4 at 7:00AM PDT by NWS Pendleton OR

…HOT, DRY, AND UNSTABLE CONDITIONS FRIDAY AFTERNOON AND
EVENING…
…ABUNDANT LIGHTNING FOR SATURDAY AFTERNOON THROUGH
SUNDAY MORNING…

.An upper level ridge of high pressure will remain over the
region through today, producing hot and dry conditions. A weak
weather disturbance riding up the ridge and over the region will
bring increasing unstable conditions across the eastern
mountains, with a slight chance of isolated thunderstorms in the
afternoon. Saturday thunderstorms could produce abundant
lightning leading to new fires starts.

…RED FLAG WARNING IN EFFECT FROM 2 PM SATURDAY TO 7 AM PDT
SUNDAY FOR ABUNDANT LIGHTNING FOR FIRE WEATHER ZONES OR640, OR642,
AND OR644…

* AFFECTED AREA…Fire Weather Zones 640 Central Mountains of
Oregon, 642 Southern Blue and Strawberry Mountains and 644
Central Blue Mountains.

* TIMING…Now through mid evening Friday and again Saturday
afternoon through Sunday morning.

* WINDS…Northwest 5 to 10 mph.

* RELATIVE HUMIDITY…As low as 10 percent.

* TEMPERATURES…Up to 100 for Friday and high 90s Saturday.

* IMPACTS…The combination of hot, dry and unstable conditions
may lead to extreme fire behavior Friday. Abundant lighting on
Saturday could lead to new fire starts.

* HAINES…As high as 6.

* OUTFLOW WINDS…Gusts as high as 50 mph are possible on Saturday
near thunderstorms.
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.