828
FNUS76 KPDT 170018
FWSPDT

Spot Forecast for Bologna Fire...OR Dep of Forestry
National Weather Service Pendleton OR
518 PM PDT Sun Aug 16 2026

Forecast is based on forecast start time of 1600 PDT on August 16.
***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...An upper level ridge will build over the fire site
starting Monday and remain the dominant weather feature into mid-
week. This will result in daytime RH values in the mid to high
teens and only moderate overnight recoveries. The pattern of light
winds in the overnight and morning hours accompanied by patchy
smoke, followed by increased wind speeds during the afternoon and
evening will continue under the ridge.

.TONIGHT...

Sky/weather.........Partly cloudy (35-45 percent) then becoming
                    mostly cloudy (60-70 percent). Patchy smoke.
CWR.................0 percent.
Chance of lightning.2 percent.
Min temperature.....Around 60.
Max humidity........47-52 percent.
Wind (20 ft)........North winds 5 to 8 mph in the evening becoming
                    light.
Mixing height.......500 ft AGL in the evening.
Transport winds.....North 5 to 12 mph becoming light.
Ventilation Index...Moderate (330) 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............88     81     75     70     67     62
RH..............26     33     37     40     43     48
20 ft wind......N 8    N 7    N 5    N 3    NW 3   NE 3
20 ft wind gust.11     12     8      6      5

.MONDAY...

Sky/weather.........Partly sunny (55-65 percent) then becoming
                    mostly cloudy (70-80 percent). Patchy smoke in
                    the morning and early afternoon.
CWR.................0 percent.
Chance of lightning.3 percent.
Max temperature.....88-93.
Min humidity........16-21 percent.
Wind (20 ft)........Light winds becoming west around 5 mph late in
                    the afternoon, then shifting to the north 5 to
                    8 mph late in the afternoon.
Mixing height.......7200 ft AGL early in the morning.
Transport winds.....Light winds becoming southwest around 8 mph
                    late in the afternoon, then shifting to the
                    northwest around 10 mph late in the afternoon.
Ventilation Index...Low (30) increasing to moderate (240-270) in
                    the afternoon.

.MONDAY NIGHT...

Sky/weather.........Mostly cloudy (70-80 percent) then becoming
                    partly cloudy (25-35 percent).
CWR.................0 percent.
Chance of lightning.3 percent.
Min temperature.....Around 60.
Max humidity........49-54 percent.
Wind (20 ft)........North winds 5 to 8 mph early in the evening
                    becoming light.
Mixing height.......4900 ft AGL early in the evening.
Transport winds.....Northwest 5 to 10 mph becoming light.
Ventilation Index...Moderate (220-240) decreasing to low (30)
                    overnight.

.TUESDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....89-93.
Min humidity........13-18 percent.
Wind (20 ft)........Light winds becoming west 5 to 8 mph late in
                    the morning.
Mixing height.......8800 ft AGL early in the morning.
Transport winds.....Light winds becoming west 7 to 15 mph late in
                    the morning.
Ventilation Index...Low (30) increasing to high (520-530) in the
                    afternoon.

$$
Forecaster...NWS Seattle
Requested by...Greag Wagenblast
Type of request...WILDFIRE
.TAG 2619723.2/PDT
.DELDT 08/16/26
.FormatterVersion 2.0.0
.EMAIL Greg.Wagenblast@odf.oregon.gov