395
FNUS76 KPDT 121145
FWSPDT

Spot Forecast for Larch Creek Fire...ODF
National Weather Service Pendleton OR
445 AM PDT Fri Jul 12 2024

Forecast is based on forecast start time of 0600 PDT on July 12.
***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.

.DISCUSSION...HIgh pressure continues to dominate the weather
pattern with above normal temperatures and dry conditions.
Winds will be light through the morning then becoming west to
northwest midday through evening before decreasing again
overnight.

.TODAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....88-92.
Min humidity........15-20 percent.
Wind (20 ft)........Southwest winds 3 to 6 mph becoming
                    northwest 5 to 10 mph in the afternoon.
Ridgetop wind.......West to northwest 8 to 12 mph.
Mixing height.......4500 ft AGL.
Transport winds.....Southwest around 5 mph in the morning, then
                    shifting to the northwest around 10 mph
                    in the afternoon.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (PDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM    6 PM
Temp............55     66     76     85     89     91      89
RH..............55     48     36     27     21     19      22
20 ft wind......SW 3   SW 3   SW 5   NW 5   NW 7   NW 9    NW 10
20 ft wind gust.6      6      6      8      12     15      18

.TONIGHT...

Sky/weather.........Mostly clear (0-10 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....Around 60.
Max humidity........45-55 percent.
Wind (20 ft)........Northwest winds 5 to 10 mph through the
                    evening then shifting southwest 3 to 5 mph
                    overnight.
Ridgetop wind.......West to northwest 8 to 12 mph decreasing to
                    4 to 8 mph overnight
Mixing height.......4500 ft AGL in the evening then near surface.
Transport winds.....West around 10 mph decreasing to to around
                    5 mph overnight.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

.SATURDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....90-94.
Min humidity........15-20 percent.
Wind (20 ft)........Southwest winds 3 to 6 mph becoming northwest
                    8 to 12 mph in the afternoon.
Ridgetop wind.......West to northwest 10-15 mph
Mixing height.......5500 ft AGL.
Transport winds.....West around 15 mph.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

$$
Forecaster...Solomon
Requested by...Jasen McCoy
Type of request...WILDFIRE
.TAG 2417827.0/PDT
.DELDT 07/12/24
.FormatterVersion 2.0.0
.EMAIL jasen.r.mccoy@odf.oregon.gov