611
FNUS76 KPDT 300233
FWSPDT

Spot Forecast for Dutch Flat...USFS
National Weather Service Pendleton OR
733 PM PDT Sun Sep 29 2024

Forecast is based on forecast start time of 0600 PDT on September 30.
***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 very dry air mass will persist across the region
through the majority of the week. A decaying frontal boundary
Wednesday morning will likely increase moisture content in the
column, but not produce any precipitation. A return to very dry
conditions is expected Thursday through the remainder of the week.
Generally poor to moderate RH recovery except for drainages which
will see better recovery.

.MONDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....53-56.
Min humidity........23-28 percent.
Wind (20 ft)........North winds 4-6 mph, becoming northeast 4-6 mph
                    by mid-morning.
Ridgetop wind.......North winds 5-8 mph, becoming northeast 5-8 mph
                    by mid-morning.
Mixing height.......Increasing to 2300-2800 ft AGL late morning.
Transport winds.....Northwest around 5 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

.MONDAY NIGHT...

Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....40-43 ridges, 32-35 drainages.
Max humidity........20-25 percent ridges, 35-40 percent drainages.
Wind (20 ft)........Shifting to the southwest 2-5 mph overnight.
Ridgetop wind.......Shifting to the southwest 2-5 mph overnight.
Mixing height.......Decreasing to near surface overnight.
Transport winds.....West around 5 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

.TUESDAY...

Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....64-67.
Min humidity........15-20 percent.
Wind (20 ft)........South-southwest winds 5-8 mph, gusting to 15 mph.
Ridgetop wind.......South-southwest winds 7-10 mph, gusting to 15 mph.
Mixing height.......Increasing to 3000 ft AGL by afternoon.
Transport winds.....Southwest around 8 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

$$
Forecaster...Plunkett
Requested by...Sara Jakover
Type of request...WILDFIRE
.TAG 2423256.0/PDT
.DELDT 09/29/24
.FormatterVersion 2.0.0
.EMAIL sara.jakover@usda.gov