355
FNUS76 KPDT 262302
FWSPDT

Spot Forecast for Second Flat...SA CIMT 2
National Weather Service Pendleton OR
402 PM PDT Sun Jul 26 2026

Forecast is based on forecast start time of 0000 PDT on July 27.
***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...Shallow inversion breaks around 0500, leading to
sunny skies and terrain driven winds early becoming southwest and
increasing through the afternoon. Mixing height and ventilation
will be very high during the afternoon.

.REST OF TONIGHT...

Sky/weather.........Mostly clear (5-15 percent). Smoke.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....49-52.
Max humidity........63-70 percent.
Wind (20 ft)........North winds 5 to 10 mph. Gusts up to
                    18 mph.
Ridgetop wind.......North winds 6 to 12 mph. Gusts up to
                    20 mph.
Mixing height.......500 ft AGL overnight.
Transport winds.....North 10 to 17 mph.
Ventilation Index...Low (60).

TIME (PDT)      MIDNGT 2 AM   4 AM   6 AM   8 AM   10 AM
Chc of ltng (%).0      0      0      0      0      0
Temp............63     58     53     51     59     71
RH..............42     54     63     70     53     33
20 ft wind......N 7    NW 6   N 6    N 5    N 4    W 4
20 ft wind gust.15     12     11     10     7      8

.MONDAY...

Sky/weather.........Sunny (5-15 percent). Smoke.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....83-86.
Min humidity........11-16 percent.
Wind (20 ft)........North winds up to 6 mph shifting to the
                    southwest 5 to 10 mph after 1100, peaking
                    between noon and 1600.
Ridgetop wind.......North winds 4 to 8 mph shifting to the
                    southwest 6 to 12 mph after 1100, peaking
                    between noon and 1600.
Mixing height.......8200 ft AGL early in the morning.
Transport winds.....Northwest 5 to 10 mph shifting to the southwest
                    10 to 14 mph late in the morning.
Ventilation Index...Low (80-90) increasing to very high (770-790)
                    in the afternoon.

$$
Forecaster...Callihan
Requested by...Michael Keys
Type of request...WILDFIRE
.TAG 2618312.0/PDT
.DELDT 07/26/26
.FormatterVersion 2.0.0
.EMAIL michael_keys@firenet.gov,john_cook@firenet.gov