117
FNUS76 KPDT 171900
FWSPDT

Spot Forecast for Bologna Fire...OR Dep of Forestry
National Weather Service Pendleton OR
1200 PM PDT Mon Aug 17 2026

Forecast is based on forecast start time of 1800 PDT on August 17.
***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 weather is expected through Wednesday.

MIN RH values will be 10 to 15 percent, with moderate overnight
recoveries.

Winds will generally be out of the north tonight, then out of the
west or northwest through Wednesday, with speeds mainly 10 mph or less.

.TONIGHT...

Sky/weather.........Mostly cloudy (50-60 percent)  Patchy smoke
                    overnight.
CWR.................0 percent.
Chance of lightning.2 percent.
Min temperature.....Around 60.
Max humidity........40-45 percent.
Wind (20 ft)........North winds 5 to 8 mph early in the evening
                    becoming light.
Ridgetop wind.......North winds 10 to 15 mph early, decreasing to
                    5 to 10 mph and becoming northwest by daybreak.
Mixing height.......500 ft AGL.
Transport winds.....Northwest 5 to 12 mph becoming light.
Ventilation Index...Moderate (300-320) decreasing to low (30)
                    overnight.

TIME (PDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Chc of ltng (%).0      0      0      0      0      0
Temp............89     83     77     72     67     62
RH..............20     26     30     33     38     42
20 ft wind......N 7    N 5    N 4    N 3    NW 3   NE 3
20 ft wind gust.10     8      6      4      4

.TUESDAY...

Sky/weather.........Sunny (0-10 percent). Patchy smoke in the
                    morning.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....89-94.
Min humidity........10-15 percent.
Wind (20 ft)........Light winds becoming west 5 to 8 mph late in
                    the morning.
Ridgetop wind.......Northwest winds 5 to 10 mph, becoming west and
                    increasing to 10 to 15 mph in the afternoon.
Mixing height.......8300 ft AGL.
Transport winds.....Light winds becoming west 5 to 14 mph early in
                    the morning.
Ventilation Index...Low (30) increasing to high (660) in the
                    afternoon.

.TUESDAY NIGHT...

Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....55-58.
Max humidity........40-45 percent.
Wind (20 ft)........Northwest winds 5 to 8 mph early in the evening
                    becoming light.
Ridgetop wind.......West winds 5 to 10 mph.
Mixing height.......500 ft AGL.
Transport winds.....Northwest 5 to 14 mph becoming light.
Ventilation Index...Moderate (330-340) decreasing to low (30)
                    overnight.

.WEDNESDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....90-94.
Min humidity........10-15 percent.
Wind (20 ft)........Light winds becoming northwest 5 to 8 mph late
                    in the afternoon.
Ridgetop wind.......West winds 5 to 10 mph becoming northwest in the
                    afternoon.
Mixing height.......7100 ft AGL.
Transport winds.....Light winds becoming west 5 to 12 mph late in
                    the morning.
Ventilation Index...Low (30) increasing to moderate (230-240) in
                    the afternoon.

$$
Forecaster...Nierenberg
Requested by...Greg Wagenblast
Type of request...WILDFIRE
.TAG 2619723.3/PDT
.DELDT 08/17/26
.FormatterVersion 2.0.0
.EMAIL Greg.Wagenblast@odf.oregon.gov