641
FNUS76 KPDT 180315
FWSPDT

Spot Forecast for CROSSWHITE FIRE...FOREST SERVICE
National Weather Service Pendleton OR
815 PM PDT Fri Jul 17 2026

Forecast is based on forecast start time of 0700 PDT on July 18.
***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...High pressure strengthens over the fire area through
the weekend, keeping skies clear as a warming and drying trend
continues. Inversion breaks around 0700 as winds shift from the
southwest to the north through the day, peaking between 1700-2000.
Inversion returns between 2100-2200 and will again break around
0700 Sunday as winds increase from the northwest through the
afternoon.

.SATURDAY...

Sky/weather.........Sunny (0-5 percent). Smoke through the
                    morning.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....90-93.
Min humidity........13-18 percent.
Wind (20 ft)........Light winds becoming west-southwest 3 to 6 mph
                    around 0900, then shifting to the northwest
                    5 to 10 mph after 1100 shifting to the
                    north 8 to 12 mph after 1700.
Ridgetop wind.......Light winds becoming west-southwest 4 to 8 mph
                    around 0900, then shifting to the northwest
                    6 to 12 mph after 1100 shifting to the north
                    10 to 15 mph after 1700.
Mixing height.......5900 ft AGL early in the morning.
Transport winds.....Light winds becoming northwest around 14 mph.
Ventilation Index...Low (30) increasing to moderate (380) in the
                    afternoon.

TIME (PDT)      7 AM   9 AM   11 AM  1 PM   3 PM   5 PM
Chc of ltng (%).0      0      0      0      0      0
Temp............61     68     79     87     90     90
RH..............51     41     30     22     19     18
20 ft wind......SE 3   SW 4   W 5    NW 7   NW 10  N 11
20 ft wind gust.       5      7      10     12     16

.SATURDAY NIGHT...

Sky/weather.........Clear (0-10 percent). Smoke through the evening.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....59-62.
Max humidity........42-47 percent.
Wind (20 ft)........North winds 8 to 12 mph in the evening becoming
                    light after 2200.
Ridgetop wind.......North winds 10 to 15 mph in the evening becoming
                    light after 2200.
Mixing height.......900 ft AGL in the evening.
Transport winds.....Northwest 5 to 14 mph becoming light.
Ventilation Index...Moderate (330) decreasing to low (30)
                    overnight.

.SUNDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....92-95.
Min humidity........10-15 percent.
Wind (20 ft)........Light winds becoming northwest 5 to 10 mph
                    around noon, peaking between 1500-1900.
Ridgetop wind.......Light winds becoming northwest 6 to 12 mph
                    around noon, peaking between 1500-1900.
Mixing height.......6400 ft AGL early in the morning.
Transport winds.....Light winds becoming west 6 to 12 mph late in
                    the morning.
Ventilation Index...Low (30) increasing to moderate (310) in the
                    afternoon.

$$
Forecaster...Callihan
Requested by...CHANTELLE DELAY
Type of request...WILDFIRE
.TAG 2617507.2/PDT
.DELDT 07/17/26
.FormatterVersion 2.0.0
.EMAIL andrew.taylor2@usda.gov,CHANTELLE_DELAY@FIRENET.GOV