088
FNUS76 KPDT 140447
FWSPDT

Spot Forecast for Highland Fire 7/14 0600 - 7/15 0600...COFMS/OSFM
National Weather Service Pendleton OR
947 PM PDT Sun Jul 13 2025

Forecast is based on forecast start time of 0600 PDT on July 14.
***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...Dry conditions are expected through Tuesday.  MIN RH
values will be generally generally less than 15 to 22 percent on Monday,
and 20 to 25 percent on Tuesday, with good overnight recoveries.

Winds will be gusty during the afternoon and evening hours both Monday and
Tuesday.

.MONDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....91-94.
Min humidity........17-22 percent.
Wind (20 ft)........South winds 5 to 7 mph shifting to the
                    northwest 10 to 20 mph early in the morning.
Ridgetop wind.......Northwest winds 10 to 15 mph with gusts 20 to 25 mph.
Mixing height.......6600 ft AGL.
Transport winds.....West 5 to 12 mph increasing to northwest 17 to
                    20 mph late in the afternoon.
Ventilation Index...Poor (50) increasing to excellent (730) 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............58  62  66  69  76  79  83  85  88  89  89  90
RH..............66  60  51  43  37  31  26  23  22  22  22  22
20 FT wind dir..S   S   NW  NW  NW  NW  NW  NW  NW  NW  NW  N
20 FT wind spd..5   5   7   7   7   11  11  11  17  17  17  19
20 FT wind gust.        10  10  10  16  16  16  20  20  20  21

.MONDAY NIGHT...

Sky/weather.........Mostly clear (0-10 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....50-53.
Max humidity........61-66 percent.
Wind (20 ft)........North winds 10 to 20 mph decreasing to 5 to 8
                    mph overnight, then shifting to the west around 5
                    mph early in the morning.
Ridgetop wind.......Northwest winds 10 to 15 mph with gusts 20 to 25 mph in
                    the evening, becoming north ad decreasing to 5 to 10 mph
                    overnight.
Mixing height.......1200 ft AGL.
Transport winds.....North 16 to 20 mph decreasing to 6 to 10 mph
                    late in the evening.
Ventilation Index...Fair (460) decreasing to poor (30) overnight.

.TUESDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....81-84.
Min humidity........21-26 percent.
Wind (20 ft)........West winds 5 to 7 mph shifting to the north 10
                    to 20 mph.
Ridgetop wind.......North to northeast winds  5 to 10 mph increasing to 10 to 15 mph
                    with gusts 20 to 25 mph in the afternoon.
Mixing height.......5300 ft AGL.
Transport winds.....North 6 to 12 mph increasing to 16 to 18 mph
                    late in the afternoon.
Ventilation Index...Poor (40) increasing to good (560) in the
                    afternoon.

$$
Forecaster...Nierenberg
Requested by...Brian Stewart
Type of request...WILDFIRE
.TAG 2517948.0/PDT
.DELDT 07/13/25
.FormatterVersion 2.0.0
.EMAIL brian.stewart@clackamasfire.com