387
FNUS76 KPDT 231313
FWSPDT

Spot Forecast for INC 579 TEN MILE...BLM
National Weather Service Pendleton OR
613 AM PDT Thu Jul 23 2026

Forecast is based on forecast start time of 0600 PDT on July 23.
***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...Dry and seasonably hot conditions will continue to
impact the fire area today and tomorrow. Winds will be diurnally
driven, with winds increasing from the northwest in the afternoons,
becoming drainage winds overnight. Expect unstable conditions to
develop by the early afternoon.

.TODAY...

Sky/weather.........Sunny (10-20 percent). Patchy smoke in the
                    morning, then areas of smoke late in the
                    morning. Patchy smoke late in the afternoon.
CWR.................0 percent.
Chance of lightning.1 percent.
Max temperature.....95-98.
Min humidity........23-28 percent.
Wind (20 ft)........Drainage winds becoming northwest 5 to 10 mph
after 9AM, then increasing to 10 to 16 mph
with gusts up to 21 mph after 3PM.
Ridgetop wind.......Light winds becoming northwest 5 to 11 mph
after 9AM, then increasing to 11 to 18 mph
with gusts up to 24 mph after 3PM.
Mixing height.......7000 ft AGL.
Transport winds.....West 5 to 12 mph shifting to the northwest
                    around 14 mph late in the afternoon.
Ventilation Index...Low (50) increasing to moderate (450) 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............62  66  69  72  78  82  85  88  92  93  93  94
RH..............80  73  65  60  53  47  41  36  31  29  28  28
20 FT wind dir..S   S   W   SW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..4   4   5   4   5   5   6   7   8   8   12  15
20 FT wind gust.5   5   6   6   6   8   10  11  13  14  17  18

.TONIGHT...

Sky/weather.........Clear (0-10 percent). Patchy smoke in the
                    evening and overnight.
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....Around 60.
Max humidity........65-70 percent.
Wind (20 ft)........Northwest winds 10 to 15 mph with gusts up to
21 mph shifting to the west 4 to 7 mph after 9PM,
then becoming light drainage winds after 12AM.
Ridgetop wind.......Northwest winds 12 to 17 mph with gusts up to
24 mph shifting to the west 5 to 8 mph after 9PM,
then becoming light winds after 12AM.
Mixing height.......1000 ft AGL in the evening.
Transport winds.....Northwest 5 to 14 mph in the evening and
                    overnight becoming light.
Ventilation Index...Moderate (310) decreasing to low (30)
                    overnight.

.FRIDAY...

Sky/weather.........Sunny (0-10 percent). Patchy smoke late in the
                    morning. Areas of smoke late in the afternoon,
                    then patchy smoke late in the afternoon.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 100.
Min humidity........15-20 percent.
Wind (20 ft)........Light drainage winds becoming northwest 6 to 12 mph
after 9AM, with gusts to around 18 mph after 3PM.
Ridgetop wind.......Light winds becoming northwest 6 to 12 mph after
9AM, with gusts to around 20 mph after 3PM.
Mixing height.......9300 ft AGL early in the morning.
Transport winds.....Light winds becoming southwest 5 to 10 mph
                    early in the morning, then shifting to the west
                    around 12 mph late in the afternoon.
Ventilation Index...Low (40) increasing to moderate (480) in the
                    afternoon.

$$
Forecaster...Lawhorn
Requested by...TRAVIS EVANS
Type of request...WILDFIRE
.TAG 2618039.0/PDT
.DELDT 07/23/26
.FormatterVersion 2.0.0
.EMAIL orcoc@firenet.gov,rhiett@blm.gov