Spot Forecast
Issued by NWS Pendleton, OR

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152
FNUS76 KPDT 080042
FWSPDT

Spot Forecast for SUNRISE...BLM
National Weather Service Pendleton OR
542 PM PDT Mon Jul 7 2025

Forecast is based on forecast start time of 1700 PDT on July 07.
***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 the
   transport wind multiplied by the mixing
   height in 100`s of feet. Index categories
   are a generalized indicator only.***

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

...RED FLAG WARNING IN EFFECT FROM 2 PM TO 11 PM PDT TUESDAY FOR
ABUNDANT LIGHTNING...

.DISCUSSION...A ridge of high pressure will remain over the region today
and tonight leading to hot afternoon temperatures, mild overnight
low temperatures, low afternoon RH, and poor to moderate RH recovery.
Tuesday afternoon, a slight chance of showers and thunderstorms is
forecast for the burn site. Any thunderstorms that develop will be
capable of producing cloud-to-ground lightning and strong, gusty outflow
winds in excess of 50 mph.

.REST OF TODAY...

Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....90-93.
Min humidity........9-14 percent.
Wind (20 ft)........Becoming northwest winds 4-8 mph with gusts up to
                    15 mph.
Ridgetop wind.......Becoming northwest winds 5-9 mph with gusts up to
                    15 mph.
Mixing height.......11000-11500 ft AGL.
Transport winds.....West 7-10 mph.
Ventilation Index...Fair (450).

TIME (PDT)      5PM 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM
Chc of ltng (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............90  90  88  85  78  74  71  69  66  63  61  59
RH..............12  13  14  16  22  25  28  29  32  34  37  39
20 FT wind dir..NW  NW  NW  N   N   N   SW  SW  SW  SW  SW  SW
20 FT wind spd..6   6   6   5   5   5   4   4   4   3   3   3
20 FT wind gust.15  15  15  8   8   8   6   6   6   4   4   4

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....58-61.
Max humidity........40-45 percent.
Wind (20 ft)........Northwest winds 5-9 mph with gusts up to 15 mph
                    in the early evening, becoming drainage winds 1-5 mph
                    overnight.
Ridgetop wind.......Northwest winds 5-9 mph with gusts up to 15 mph
                    in the early evening, becoming variable winds 1-5 mph
                    overnight.
Mixing height.......Decreasing to near surface overnight.
Transport winds.....Shifting to the north 8-12 mph early in the evening,
                    then becoming variable 3-6 mph overnight.
Ventilation Index...Fair (450) decreasing to poor (30) overnight.

.TUESDAY...

Sky/weather.........Sunny (20-30 percent). Slight chance of showers
                    and thunderstorms in the afternoon.
CWR.................2 percent.
Chance of lightning.20 percent.
Max temperature.....95-98.
Min humidity........7-12 percent.
Wind (20 ft)........Upslope and upvalley winds 2-5 mph early morning,
                    becoming southwest winds 6-11 mph with gusts up
                    to 20 mph by late morning. Winds shifting to the
                    northwest 8-12 mph with gusts up to 25 mph late
                    afternoon. Gusty and erratic winds expected near
                    any thunderstorms that develop in the afternoon.
Ridgetop wind.......Upslope and upvalley winds 2-5 mph early morning,
                    becoming southwest winds 6-11 mph with gusts up
                    to 20 mph by late morning. Winds shifting to the
                    northwest 10-14 mph with gusts up to 25 mph late
                    afternoon. Gusty and erratic winds expected near
                    any thunderstorms that develop in the afternoon.
Mixing height.......Increasing to 12000-15000 ft AGL late morning
                    and afternoon.
Transport winds.....Variable winds 2-5 mph early morning, becoming
                    south then southwest 10-15 mph late morning and early
                    afternoon, then shifting to the northwest 10-15 mph
                    late in the afternoon.
Ventilation Index...Poor (30) increasing to excellent (1050) in the
                    afternoon.

$$
Forecaster...Plunkett
Requested by...MARY BIBLER
Type of request...WILDFIRE
.TAG 2517508.0/PDT
.DELDT 07/07/25
.FormatterVersion 2.0.0
.EMAIL orcoc@firenet.gov