099
FNUS76 KPDT 222240
FWSPDT

Spot Forecast for Swauk Creek Fire...USFS
National Weather Service Pendleton OR
340 PM PDT Sun Sep 22 2024

Forecast is based on forecast start time of 1600 PDT on September 22.
***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...Breezy west to northwest winds will continue to
impact the fire site through this evening, before weak winds develop
at the surface. Breezy winds along the ridgetops will continue
through late tonight. There will be increasing mid to upper level
cloud cover over the fire area tonight, with a return to clearer
skies tomorrow. Afternoon RHs will be in the 20s today, then
increasing into the 40s tomorrow afternoon, with excellent overnight
recovery.

.REST OF TODAY...

Sky/weather.........Partly sunny (60-70 percent). Haze.
CWR.................0 percent.
LAL.................1.
Max temperature.....73-76.
Min humidity........24-29 percent.
Wind (20 ft)........West winds 5 to 10 mph with gusts to around 18
                    mph.
Ridgetop wind.......West winds 7 to 12 mph with gusts to around 20
mph.
Mixing height.......4000 ft AGL.
Transport winds.....West 16 to 17 mph.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

TIME (PDT)      4 PM   6 PM   8 PM   10 PM  MIDNGT 2 AM
Temp............72     65     57     53     52     52
RH..............31     39     55     66     72     77
20 ft wind......W 10   W 8    W 7    W 7    N 6    N 5
20 ft wind gust.18     16     10     10     7      6

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent). Haze in the
                    evening.
CWR.................0 percent.
LAL.................1.
Min temperature.....51-54.
Max humidity........77-82 percent.
Wind (20 ft)........West winds 5 to 8 mph with gusts to around 16
                    mph shifting to the north 5 to 7 mph after
11PM, then becoming drainage after 2 AM.
Ridgetop wind.......West winds 8 to 13 mph with gusts to around
20 mph shifting to the northwest after 8 PM.
Mixing height.......600 ft AGL.
Transport winds.....West 12 to 16 mph.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

.MONDAY...

Sky/weather.........Mostly sunny (35-45 percent). Haze late in the
                    afternoon.
CWR.................0 percent.
LAL.................1.
Max temperature.....73-76.
Min humidity........42-47 percent.
Wind (20 ft)........Drainage winds becoming west 5 to 8 mph after
10 AM.
Ridgetop wind.......West winds 5 to 10 mph.
Mixing height.......3000 ft AGL.
Transport winds.....West 10 to 14 mph.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

$$
Forecaster...Lawhorn
Requested by...Rachel Granberg
Type of request...WILDFIRE
.TAG 2422869.0/PDT
.DELDT 09/22/24
.FormatterVersion 2.0.0
.EMAIL rachel.granberg@usda.gov