213
FNUS76 KPDT 012050
FWSPDT

Spot Forecast for Elk 16 C RX...USFS
National Weather Service Pendleton OR
150 PM PDT Fri May 1 2026

Forecast is based on ignition time of 1526 PDT on May 01.
***Thunderstorms imply gusty and erratic winds      ***
***Winds are 20 foot 10-minute averages             ***
***CWR: Chance of wetting rain 0.10 or greater      ***
***Ventilation Index is derived from transport wind
   multiplied by the mixing height in 100`s of ft.
   Categories are a generalized indicator only:
   low (< 200), moderate (200-500), high (500-700),
   and very high (> 700).                           ***

If you have questions or concerns with this forecast, please
contact our office at (541) 276-8134.

.DISCUSSION...Dry and warm conditions will persist over the fire
are through the period. Winds will be from the south-southeast
5 to 8 mph during the day and diurnally driven overnight.
Daytime RHs will be in the mid teens to lower 20% with fair
overnight recoveries in the upper 40% to low 50%. The inversion
will break around 11 AM at neat 7000 ft AGL and with very high
ventilation rates.

.REST OF TODAY...

Sky/weather.........Mostly sunny (35-45 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 70.
Min humidity........18-23 percent.
Wind (20 ft)........Southeast winds 5 to 8 mph.
Ridgetop wind.......Southeast winds 7 to 10 mph.
Mixing height.......7300 ft AGL.
Transport winds.....South 12 to 14 mph.
Ventilation Index...Very high (800).

TIME (PDT)      3 PM   5 PM   7 PM   9 PM   11 PM  1 AM
Chc of ltng (%).0      0      0      0      0      0
Temp............66     65     60     50     46     44
RH..............25     25     36     49     51     46
20 ft wind......S 8    SE 7   SE 7   SE 6   S 5    S 5
20 ft wind gust.14     14     14     11     10     10

.TONIGHT...

Sky/weather.........Partly cloudy (45-55 percent) then becoming
                    mostly cloudy (55-65 percent) then becoming
                    partly cloudy (45-55 percent) then becoming
                    mostly cloudy (55-65 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....42-45.
Max humidity........45-50 percent.
Wind (20 ft)........Southeast winds 5 to 8 mph after 5 PM and
                    overnight becoming light.
Ridgetop wind.......Southeast winds 7 to 10 mph in the evening and
                    overnight becoming downslope/down valley.
Mixing height.......1400 ft AGL.
Transport winds.....Southeast 9 to 12 mph.
Ventilation Index...Moderate (320) decreasing to low (120)
                    overnight.

.SATURDAY...

Sky/weather.........Partly sunny (55-65 percent).
CWR.................0 percent.
Chance of lightning.2 percent.
Max temperature.....69-72.
Min humidity........16-21 percent.
Wind (20 ft)........Light winds becoming southeast 5 to 8 mph after
                    8 AM.
Ridgetop wind.......Downslope/down valley winds becoming southeast
                    7 to 10 mph after 8 AM.
Mixing height.......8800 ft AGL.
Transport winds.....Southeast 9 to 13 mph shifting to the south 8
                    to 12 mph late in the afternoon.
Ventilation Index...Low (160) increasing to very high (820) in the
                    afternoon.

$$
Forecaster...Bennese
Requested by...Jesse Rigel
Type of request...PRESCRIBED
.TAG 2612325.1/PDT
.DELDT 05/01/26
.FormatterVersion 2.0.0
.EMAIL jesse.rigel@usda.gov