504
FNUS76 KPDT 140031
FWSPDT

Spot Forecast for Welcome Station 6A / 8...USFS
National Weather Service Pendleton OR
531 PM PDT Mon May 13 2024

Forecast is based on ignition time of 0800 PDT on May 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...Upper level high pressure will build over the
area tomorrow and Wednesday with a drying and warming trend
developing. Afternoon temperatures will increase by 5 to 7
degrees by Wednesday. Minimum RHs will be in the lower to mid
20s each afternoon with good to excellent recovery overnight.
Winds will be from the north to northeast at 5 to 10 mph
in the afternoons, then turning to the west and becoming
light late in the overnight hours.

.TUESDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....70-73.
Min humidity........20-25 percent.
Wind (20 ft)........Northeast winds 5 to 10 mph turning to the
north in the afternoon.
Mixing height.......4000 ft AGL.
Transport winds.....North 7 to 14 mph.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (PDT)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
Temp............48     56     64     69     70     67
RH..............64     48     34     26     25     30
20 ft wind......NE 5   NE 5   NE 7   N 9    N 10   N 10
20 ft wind gust.

.TUESDAY NIGHT...

Sky/weather.........Mostly clear (0-10 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....43-46.
Max humidity........67-72 percent.
Wind (20 ft)........North winds 5 to 10 mph shifting to the west 5
                    to 7 mph overnight, then becoming light early
                    in the morning.
Mixing height.......500 ft AGL in the evening and overnight.
Transport winds.....North 5 to 14 mph.
Haines Index........3 to 5 or very low to moderate potential for
                    large plume dominated fire growth.

.WEDNESDAY...

Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....77-80.
Min humidity........20-25 percent.
Wind (20 ft)........Light winds becoming northeast 5 to 10 mph late
                    in the morning.
Mixing height.......6000 ft AGL early in the morning.
Transport winds.....Northwest around 5 mph shifting to the
                    northeast 5 to 8 mph early in the morning, then
                    shifting to the north 10 to 12 mph late in the
                    afternoon.
Haines Index........2 to 5 or very low to moderate potential for
                    large plume dominated fire growth.

$$
Forecaster...Lawhorn
Requested by...Jessie Creech
Type of request...PRESCRIBED
.TAG 2414058.0/PDT
.DELDT 05/13/24
.FormatterVersion 2.0.0
.EMAIL jessie.creech@usda.gov