087
FNUS76 KPDT 182248
FWSPDT

Spot Forecast for Bologna Fire...OR Dep of Forestry
National Weather Service Pendleton OR
348 PM PDT Tue Aug 18 2026

Forecast is based on forecast start time of 0600 PDT on August 19.
***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...Elevated fire weather conditions continue through the
next couple of days with minimum relative humidity reaching close to
the single digits. Winds in general will be light and variable with more
terrain driven direction in the overnight hours. Otherwise, overnight
recoveries will be moderate in the 35 to 45 percent range.


.WEDNESDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....91-96.
Min humidity........9-14 percent.
Wind (20 ft)........Light winds becoming west 5 to 10 mph by noon
                    shifting to the northwest 3 to 8 mph by 3 PM.
Ridgetop wind.......Light winds becoming west 7 to 12 mph by noon
                    shifting to the northwest 5 to 10 mph by 3 PM.
Mixing height.......7100 ft AGL early in the morning.
Transport winds.....Light winds becoming southwest 5 to 10 mph late
                    in the morning, then shifting to the northwest
                    5 to 10 mph late in the afternoon.
Ventilation Index...Low (30) increasing to moderate (370-380) in
                    the afternoon.

TIME (PDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Chc of ltng (%).0      0      0      0      0      0
Temp............56     59     72     83     91     93
RH..............47     43     29     20     14     13
20 ft wind......E 3    E 3    SE 3   SW 4   W 5    NW 6
20 ft wind gust.       4      5      6      8      10

.WEDNESDAY NIGHT...

Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....55-60.
Max humidity........35-40 percent.
Wind (20 ft)........Northwest winds 5 to 10 mph early, becoming light
                    by 10 PM.
Ridgetop wind.......Northwest winds 7 to 12 mph early, becoming light
                    by 10 PM.
Mixing height.......5300 ft AGL early in the evening.
Transport winds.....North 5 to 10 mph shifting to the northeast
                    overnight, then becoming light early in the
                    morning.
Ventilation Index...Moderate (210-240) decreasing to low (30)
                    overnight.

.THURSDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....94-99.
Min humidity........10-15 percent.
Wind (20 ft)........Light winds becoming north 5 to 10 mph by 1 PM.
Ridgetop wind.......Light winds becoming north 7 to 12 mph by 1 PM.
Mixing height.......8400 ft AGL early in the morning.
Transport winds.....Light winds becoming southwest 5 to 10 mph late
                    in the morning, then shifting to the northwest
                    5 to 10 mph late in the afternoon.
Ventilation Index...Low (30) increasing to moderate (240-260) in
                    the afternoon.

$$
Forecaster...Day
Requested by...Greag Wagenblast
Type of request...WILDFIRE
.TAG 2619723.4/PDT
.DELDT 08/18/26
.FormatterVersion 2.0.0
.EMAIL Greg.Wagenblast@odf.oregon.gov