903
FNUS76 KPDT 102353
FWSPDT

Spot Forecast for Larch Creek Fire...OSFM
National Weather Service Pendleton OR
453 PM PDT Wed Jul 10 2024

Forecast is based on forecast start time of 1900 PDT on July 10.
***Thunderstorms imply gusty and erratic winds***
***Winds are 20 foot 10-minute averages***
***CWR-Chance of wetting rain 0.10 or greater***

If you have questions or concerns with this forecast, please
contact our office at (541) 276-8134.

...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 10 PM PDT THIS
EVENING...
...RED FLAG WARNING IN EFFECT UNTIL 11 PM PDT THIS EVENING...

.DISCUSSION...Dry and a bit cooler weather is in store for the next few days.
Winds will be breezy through Thursday before becoming lighter Thursday night
and Friday.  MIN RH values will mainly be 15 to 20 percent, with moderate
recoveries overnight.

.TONIGHT...

Sky/weather.........Mostly clear (0-10 percent). Patchy smoke in
                    the evening. Haze through the night. Areas of
                    smoke overnight.
CWR.................0 percent.
LAL.................1.
Min temperature.....56-59.
Max humidity........37-42 percent.
Wind (20 ft)........West winds 10 to 15 mph. Gusts to 25 mph in the evening.
Ridgetop wind.......Northwest winds 15 to 20 with gusts 25 to 30 mph in
                    the evening, decreasing to 10 to 15 with gusts 20 to 25 mph
                    overnight.
Mixing height.......500 ft AGL in the evening.
Transport winds.....West around 11 mph.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

.THURSDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....90-93.
Min humidity........17-22 percent.
Wind (20 ft)........West winds 5 to 10 mph shifting to the north 5
                    to 10 mph in the afternoon. Gusts 15 to 20 mph.
Ridgetop wind.......Northwest wind 10 to 15 mph with gusts 20 to 25 mph.
Mixing height.......5000 ft AGL early in the morning.
Transport winds.....Northwest around 7 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

.THURSDAY NIGHT...

Sky/weather.........Mostly clear (0-10 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....56-59.
Max humidity........47-52 percent.
Wind (20 ft)........Northwest winds 8 to 13 mph shifting to the
                    west 5 to 7 mph overnight.
Ridgetop wind.......Northwest wind 10 to 15 mph decreasing to 5 to 10 mph
                    and shifting to the west overnight.
Mixing height.......500 ft AGL in the evening.
Transport winds.....West around 10 mph.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

.FRIDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....91-94.
Min humidity........15-20 percent.
Wind (20 ft)........West winds around 5 mph shifting to the north 5
                    to 10 mph in the afternoon.
Ridgetop wind.......West wind 5 to 10 mph becoming south by morning.
Mixing height.......4800 ft AGL early in the morning.
Transport winds.....West around 5 mph.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

$$
Forecaster...Nierenberg
Requested by...Don Maxwell
Type of request...WILDFIRE
.TAG 2417762.0/PDT
.DELDT 07/10/24
.FormatterVersion 2.0.0
.EMAIL don_maxwell@firenet.gov