640
FNUS76 KPDT 100157
FWSPDT

Spot Forecast for Bowman Rx...Columbia Land Trust
National Weather Service Pendleton OR
657 PM PDT Thu May 9 2024

Forecast is based on ignition time of 1900 PDT on May 09.
***Thunderstorms imply gusty and erratic winds***
***Winds are 20 foot 10-minute averages***
***CWR-Chance of wetting rain 0.10 or greater***

If you have questions or concerns with this forecast, please
contact our office at (541) 276-8134.

.DISCUSSION...High pressure will keep the burn area dry and warm
through the weekend with temperatures around 12-15 degrees above
normal through Saturday. Daytime RHs will drop to around 30 percent
with overnight recoveries of around 70 percent. Cooler temperatures
with rising RHs are expected Sunday through mid week with no
precipitation expected. Breezy to windy afternoon conditions
Saturday through next Wednesday with the strongest winds Saturday
afternoon and evening.

.REST OF TONIGHT...

Sky/weather.........Clear (0-5 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....49-51.
Max humidity........65-70 percent.
Wind (20 ft)........Northeast winds 8 to 15 mph with gusts to
                    around 21 mph shifting to the north 5 to 8 mph
                    late in the evening.
Ridgetop wind.......Northeast winds 10 to 18 mph becoming north 6
                    to 10 mph late in the evening.
Mixing height.......5100 ft AGL early in the evening becoming near
                    surface.
Transport winds.....Northeast winds 9 to 14 mph decreasing to 4 to
                    8 mph during the evening.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

TIME (PDT)      7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 6AM
Temp............71  67  62  59  57  55  55  52  52  51  50  51
RH..............37  41  47  51  54  57  59  63  66  65  68  68
20 FT wind dir..E   NE  NE  NE  N   N   N   N   N   N   NE  NE
20 FT wind spd..15  8   8   8   8   8   8   7   7   7   5   5
20 FT wind gust.21  10  10  10                          6   6

.FRIDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....79-82.
Min humidity........27-32 percent.
Wind (20 ft)........Northeast winds 3 to 7 mph becoming south to
                    southeast 5 to 8 mph in the mid morning.
Ridgetop wind.......Northeast winds 4 to 9 mph becoming south to
                    southeast 6 to 10 mph during the morning.
Mixing height.......Near surface rising to 6500 ft AGL in the
                    afternoon.
Transport winds.....North winds 5 to 7 mph becoming to the east to
                    southeast 3 to 6 mph late in the morning.
                    late in the afternoon.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

.FRIDAY NIGHT...

Sky/weather.........Clear (0-10 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....52-55.
Max humidity........63-68 percent.
Wind (20 ft)........South winds 5 to 8 mph shifting to the
                    northwest 3 to 7 mph early in the evening.
Ridgetop wind.......South winds 6 to 10 mph shifting to the
                    northwest 4 to 8 mph early in the evening.
Mixing height.......5500 ft AGL early in the evening becoming near
                    surface.
Transport winds.....Light winds becoming north around 5 mph early
                    in the morning.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

.SATURDAY...

Sky/weather.........Sunny (0-5 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....83-86.
Min humidity........24-29 percent.
Wind (20 ft)........West to northwest winds 3 to 6 mph shifting
                    to the west 10 to 19 mph late in the morning.
Ridgetop wind.......West to northwest winds 4 to 8 mph shifting
                    to the west 12 to 22 mph late in the morning.
Mixing height.......Near surface rising to 6500 ft AGL in the
                    afternoon.
Transport winds.....North winds around 5 mph becoming west to
                    southwest 7 to 15 mph in the afternoon.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

$$
Forecaster...Perry
Requested by...Adam Lieberg
Type of request...PRESCRIBED
.TAG 2413671.0/PDT
.DELDT 05/09/24
.FormatterVersion 2.0.0
.EMAIL alieberg@columbialandtrust.org