873
FNUS76 KPDT 140300
FWSPDT

Spot Forecast for Cougar Creek Fire...WADNR NE IMT #1
National Weather Service Pendleton OR
800 PM PDT Tue Aug 13 2024

Forecast is based on forecast start time of 0600 PDT on August 14.
***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...Winds on Wednesday are expected to be weak as we transition
between systems. An approaching system then into Thursday brings a new
chance of showers and thunderstorms. Current expectations are moisture
will be sufficient that rain should accompany this activity, and a red flag
warning will not be necessary for this activity. Otherwise look for minimum
humidities in the 25-35% range with overnight recoveries poor to fair but
becoming good by Thursday night.

.WEDNESDAY...

Sky/weather.........Sunny (5-15 percent). Haze in the morning.
                    Areas of smoke through the day.
CWR.................0 percent.
LAL.................1.
Max temperature.....66-80.
Min humidity........26-36 percent.
Wind (20 ft)........Light and variable winds 4-6 mph.
Ridgetop wind.......Upslope winds 5-8 mph.
Mixing height.......4700 ft AGL in the late morning and afternoon.
Transport winds.....South around 5 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

.WEDNESDAY NIGHT...

Sky/weather.........Clear (0-10 percent). Haze and areas of smoke.
CWR.................0 percent.
LAL.................1.
Min temperature.....54-60.
Max humidity........46-51 percent.
Wind (20 ft)........Drainage winds 5-8 mph overnight.
Ridgetop wind.......Drainage winds 5 to 10 mph overnight.
Mixing height.......500 ft AGL early in the evening.
Transport winds.....North around 6 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

.THURSDAY...

Sky/weather.........Mostly sunny (25-35 percent). Chance of rain
                    showers thunderstorms in the afternoon.
CWR.................6 percent.
LAL.................2.
Max temperature.....66-81.
Min humidity........35-45 percent.
Wind (20 ft)........Light winds becoming north 4 to 6 mph in the
                    afternoon. Gusty and erratic winds expected
                    near thunderstorms in the afternoon.
Ridgetop wind.......Light winds becoming north 5 to 8 mph in the
afternoon.
Mixing height.......5500 ft AGL in the late morning and afternoon.
Transport winds.....North around 6 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

$$
Forecaster...Goatley
Requested by...Eric Krausz
Type of request...WILDFIRE
.TAG 2420224.0/PDT
.DELDT 08/13/24
.FormatterVersion 2.0.0
.EMAIL eric.krausz@dnr.wa.gov