909
FNUS76 KPDT 241957
FWSPDT

Spot Forecast for Tracy Hill RX...USFS
National Weather Service Pendleton OR
1257 PM PDT Tue Sep 24 2024

Forecast is based on ignition time of 0600 PDT on September 25.
***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...A strong cold front will move across the fire area
early Wednesday bringing with it enhanced west winds (see below).
Winds will continue to remain windy through the late afternoon.
Daytime humidities ahead of the front will be moderate between
60-65% with excellent overnight recoveries. Thursday winds will
shift variably (see below for more details) but remain below 10
mph with good daytime RHs.


.WEDNESDAY...

Sky/weather.........Sunny (10-20 percent) then becoming partly
                    sunny (65-75 percent). Chance of rain showers
                    late in the morning.
CWR.................2 percent increasing to 26 percent late in the
                    morning.
LAL.................1.
Max temperature.....66-69.
Min humidity........60-65 percent.
Wind (20 ft)........West winds 15 to 18 mph with gusts to around 23
                    mph.
Ridgetop wind.......southwest winds 18 to 23 with gusts to around 29
                    mph.
Mixing height.......2300 ft AGL early in the morning.
Transport winds.....West 15 to 23 mph.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

TIME (PDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Temp............60     56     61     65     64     62
RH..............78     92     83     76     70     80
20 ft wind......W 18   W 17   W 17   W 15   W 18   W 18
20 ft wind gust.22     22     22     22     23     23

.WEDNESDAY NIGHT...

Sky/weather.........Mostly cloudy (60-70 percent) then becoming
                    partly cloudy (25-35 percent). Chance of rain
                    showers in the evening.
CWR.................26 percent decreasing to 0 percent late in the
                    evening.
LAL.................1.
Min temperature.....44-47.
Max humidity........95-100 percent.
Wind (20 ft)........West winds 10 to 17 mph.
Ridgetop wind.......West winds 18 to 26 mph.
Mixing height.......700 ft AGL in the evening.
Transport winds.....West 13 to 21 mph decreasing to around 8 mph
                    early in the morning.
Haines Index........2 to 4 or very low to low potential for large
                    plume dominated fire growth.

.THURSDAY...

Sky/weather.........Sunny (5-15 percent).
CWR.................4 percent.
LAL.................1.
Max temperature.....66-69.
Min humidity........38-43 percent.
Wind (20 ft)........Northwest winds 5 to 10 mph shifting to the
                    south 3 to 5 mph around 11 PM, then
                    shifting to the west 5 to 8 mph around 5 PM.
Ridgetop wind.......Northwest winds 5 to 10 mph shifting to the
                    south 5 to 7 mph around 11 AM, then
                    shifting to the west 5 to 8 mph around 5 PM.
Mixing height.......3300 ft AGL late in the morning.
Transport winds.....West 6 to 15 mph.
Haines Index........2 to 4 or very low to low potential for large
                    plume dominated fire growth.

$$
Forecaster...Bennese
Requested by...Lauren Clark
Type of request...PRESCRIBED
.TAG 2422974.0/PDT
.DELDT 09/24/24
.FormatterVersion 2.0.0
.EMAIL keith.mcmillen@usda.gov,lauren.clark@usda.gov,christopher.harper@usda.gov