542
FNUS76 KPDT 262346
FWSPDT

Spot Forecast for Incident 586...FS-Central Oregon T3 Team
National Weather Service Pendleton OR
446 PM PDT Sun Jul 26 2026

Forecast is based on forecast start time of 0600 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...Inversion breaks around 0800, with thermal belt
around 2500 feet. Light terrain driven winds in the morning,
becoming northwest through the afternoon and peak between
1800-2000.

.MONDAY...

Sky/weather.........Sunny (0-10 percent). Patchy smoke.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....86-89.
Min humidity........18-23 percent.
Wind (20 ft)........Light winds becoming northwest 5 to 10
                    mph with gusts to around 19 mph after 1400.
Ridgetop wind.......Light winds becoming northwest 6 to 12 mph
                    with gusts to around 23 mph after 1400.
Mixing height.......7800 ft AGL early in the morning.
Transport winds.....Light winds becoming northwest around 14 mph.
Ventilation Index...Low (30) increasing to moderate (420) in the
                    afternoon.

TIME (PDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Chc of ltng (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............54  57  60  63  69  72  76  79  83  84  85  86
RH..............74  69  61  55  47  40  33  28  25  23  23  23
20 FT wind dir..SE  E   W   N   NW  NW  NW  NW  W   W   NW  NW
20 FT wind spd..3   3   3   2   3   3   3   4   5   7   7   13
20 FT wind gust.                    5   6   8   11  12  13  19

.MONDAY NIGHT...

Sky/weather.........Mostly clear (5-15 percent). Patchy smoke early
                    in the evening.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....55-58.
Max humidity........63-68 percent.
Wind (20 ft)........Northwest winds 7 to 14 mph with gusts to
                    around 20 mph after 1700 becoming light
                    and terrain driven after 0100.
Ridgetop wind.......Northwest winds 8 to 16 mph with gusts to
                    around 25 mph after 1700 becoming light after
                    0100.
Mixing height.......500 ft AGL in the evening and overnight then
                    500 ft AGL early in the morning.
Transport winds.....Northwest 5 to 14 mph becoming light.
Ventilation Index...Moderate (460) decreasing to low (30)
                    overnight.

$$
Forecaster...Callihan
Requested by...SITL
Type of request...WILDFIRE
.TAG 2618075.3/PDT
.DELDT 07/26/26
.FormatterVersion 2.0.0
.EMAIL alexis_martin@firenet.gov