Spot Forecast
Issued by NWS Pendleton, OR

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
115
FNUS76 KPDT 041643
FWSPDT

Spot Forecast for South Fork Fire...ODF
National Weather Service Pendleton OR
943 AM PDT Fri Jul 4 2025

Forecast is based on forecast start time of 1000 PDT on July 04.
***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.

.DISCUSSION...A weather system moving over the Pacific Northwest
today will induce a chance (35%) of rain showers, and a very low
chance (5%) of thunder. Prevailing wind direction will be southwest
to west. Warmer, drier weather is expected Saturday into early
next week.

.REST OF TODAY...

Sky/weather.........Cloudy (85-95 percent). Chance of showers.
CWR.................10 percent.
Chance of lightning.5 percent.
Max temperature.....74-77.
Min humidity........40-45 percent.
Wind (20 ft)........Southwest to west winds 4-9 mph with afternoon
                    gusts up to 15 mph.
Ridgetop wind.......Southwest to west winds 5-10 mph with afternoon
                    gusts up to 15 mph.
Mixing height.......3500-4000 ft AGL.
Transport winds.....Southwest 8-12 mph.
Ventilation Index...Fair (400) in the afternoon.

TIME (PDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM
Chc of ltng (%).5   5   5   5   5   5   5   5   5   5   5   5
Temp............69  70  70  72  72  73  74  74  74  74  72  66
RH..............42  43  45  46  47  48  46  48  46  47  50  59
20 FT wind dir..SW  S   S   S   W   W   W   W   W   W   S   S
20 FT wind spd..5   6   8   8   8   8   8   8   7   7   7   7
20 FT wind gust.        15  15  15  15  15  10  10  10  10  10

.TONIGHT...

Sky/weather.........Mostly cloudy (75-85 percent). Slight chance of
                    rain showers.
CWR.................5 percent.
Chance of lightning.2 percent.
Min temperature.....57-60.
Max humidity........60-65 percent.
Wind (20 ft)........West winds 5-9 mph in the evening shifting to the
                    south to southwest overnight. Gusts up to 15 mph.
Ridgetop wind.......West winds 6-11 mph in the evening shifting to the
                    south to southwest overnight. Gusts up to 15 mph.
Mixing height.......Decreasing to 800-1000 ft AGL overnight.
Transport winds.....South to southwest 8-12 mph.
Ventilation Index...Poor (80) increasing to poor (110) overnight.

.SATURDAY...

Sky/weather.........Partly sunny (60-70 percent) then becoming
                    sunny (5-15 percent).
CWR.................0 percent.
Chance of lightning.1 percent.
Max temperature.....84-87.
Min humidity........20-25 percent.
Wind (20 ft)........Southwest winds 5-9 mph with gusts up to 15 mph in
                    the morning, shifting to the west 5-8 mph in the afternoon.
Ridgetop wind.......Southwest winds 6-11 mph with gusts up to 15 mph in
                    the morning, shifting to the west 5-8 mph in the afternoon.
Mixing height.......Increasing to 6500-7000 ft AGL by late morning.
Transport winds.....Southwest 8-14 mph.
Ventilation Index...Good (550).

$$
Forecaster...Plunkett
Requested by...Anthony Goodwater
Type of request...WILDFIRE
.TAG 2517314.0/PDT
.DELDT 07/04/25
.FormatterVersion 2.0.0
.EMAIL ORBMC@firenet.gov