935
FNUS76 KPDT 081348
FWSPDT

Spot Forecast for Trapper...USFS
National Weather Service Pendleton OR
648 AM PDT Mon Jun 8 2026

Forecast is based on forecast start time of 0700 PDT on June 08.
***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...Warm temperatures, low RH, and breezy conditions are forecast
today in advance of an approaching weather system. Rain showers are likely by
evening and tonight, with a very low (5 percent) chance of thunderstorms. Winds
will become breezy to windy along surrounding ridgetops overnight and Tuesday,
but anticipating the burn site will be more sheltered from the strongest winds.
Cooler, showery weather with higher RH is expected Tuesday as the low-pressure
system moves overhead. There is a slight chance (15 percent) of isolated
thunderstorms Tuesday.

.REST OF TODAY...

Sky/weather.........Partly cloudy (20-60 percent) then becoming mostly
                    cloudy (65-85 percent). Chance of rain showers
                    late in the afternoon.
CWR.................0 percent increasing to 40 percent late in the
                    afternoon.
Chance of lightning.5 percent.
Max temperature.....73-76.
Min humidity........17-22 percent.
Wind (20 ft)........Light winds becoming south 3-8 mph with gusts of
                    12-17 mph by mid-morning, then shifting to the
                    southwest to west 4-8 mph with gusts of 12-17 mph late
                    afternoon.
Ridgetop wind.......Light winds becoming south 8-12 mph with gusts of 15-25 mph
                    by mid-moring, then shifting to the southwest to west 4-9 mph
                    with gusts of 12-17 mph late afternoon.
Mixing height.......Increasing to 7500-8000 ft AGL by early afternoon.
Transport winds.....Southeast to south 4-8 mph early morning, becoming south to
                    southwest 15-20 mph late morning and afternoon.
Ventilation Index...Low (150) increasing to very high (1050) in the
                    afternoon.

TIME (PDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM
Chc of ltng (%).0   0   0   0   0   0   0   0   0   0   5   5
Temp............48  52  56  64  68  70  72  73  74  71  66  65
RH..............48  44  40  32  28  25  23  21  23  30  39  43
20 FT wind dir..SE  SE  S   S   S   S   S   S   S   SW  WSW  WSW
20 FT wind spd..2   2   3   5   7   8   8   10  8   8   8   7
20 FT wind gust.            11  14  16  17  18  17  16  14  14

.TONIGHT...

Sky/weather.........Cloudy (85-95 percent). Rain showers likely and very low
                    chance of thunderstorms.
CWR.................70 percent.
Chance of lightning.5 percent.
Min temperature.....46-49.
Max humidity........92-97 percent.
Wind (20 ft)........Southwest to west winds 2-6 mph with gusts of 12-17 mph.
Ridgetop wind.......Southwest to west winds 12-17 mph with gusts of 25-35 mph.
Mixing height.......Decreasing to 700-1100 ft AGL overnight.
Transport winds.....Southwest 12-18 mph shifting to the west 20-25 mph overnight.
Ventilation Index...Decreasing to moderate (220) overnight.

.TUESDAY...

Sky/weather.........Mostly cloudy (70-80 percent). Rain showers likely in the
                    morning. Chance of rain showers and slight chance of
                    thunderstorms in the afternoon.
CWR.................60 percent early morning, decreasing to 15 percent
                    in the afternoon.
Chance of lightning.15 percent.
Max temperature.....61-64.
Min humidity........60-65 percent.
Wind (20 ft)........Southwest to west winds 4-8 mph with gusts of 12-17 mph.
                    Gusty and erratic winds near any thunderstorms that develop.
Ridgetop wind.......Southwest to west winds 12-17 mph with gusts of 25-40 mph.
                    Gusty and erratic winds near any thunderstorms that develop.
Mixing height.......Increasing to 3500-4000 ft AGL by afternoon.
Transport winds.....West 18-23 mph.
Ventilation Index...Increasing to high (650) by afternoon.

$$
Forecaster...Plunkett
Requested by...Incident Commander
Type of request...WILDFIRE
.TAG 2615097.3/PDT
.DELDT 06/08/26
.FormatterVersion 2.0.0
.EMAIL orbmc@firenet.gov