166
FNUS76 KPDT 310018
FWSPDT

Spot Forecast for Big Eddy Block 1...USFS DEF
National Weather Service Pendleton OR
518 PM PDT Thu May 30 2024

Forecast is based on ignition time of 0800 PDT on May 31.
***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...Friday will be warmer with lower humidity compared to
today, and winds will be light and terrain driven. A dry cold front
will sweep across Oregon on Saturday, but the main influence will be
north of the burn site.  However, there will be an uptick in winds,
particularly along the ridgetop.

.FRIDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....76.
Min humidity........18 percent.
Wind (20 ft)........East-Southeast 1-4 mph.
Ridgetop wind.......East-Southeast 0-3 mph becoming North-Northeast 5-7 mph
                    in the afternoon.
Mixing height.......rising to 6500 ft AGL by late morning.
Transport winds.....Southeast-South around 5 mph shifting to the north around
                    9 mph late in the afternoon.
Haines Index........3 (very low).



TIME (PDT)         8AM    10A    12P    2PM    4PM    6PM    8PM
Temp............   49     59     69     74     75     73     70
RH..............   61     43     30     24     23     25     27
20 FT wind dir..          E      E      E      ESE    ESE
20 FT wind spd..   0      2      3      4      4      4      0
20 FT wind gust.



.FRIDAY NIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (55-65 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....44-47.
Max humidity........73-78 percent.
Wind (20 ft)........North 3-7 mph with strongest winds in the evening.
Ridgetop wind.......North 5-7 mph.
Mixing height.......lowering to 700 ft AGL.
Transport winds.....North-Northwest around 7 mph.
Haines Index........4 (low).


.SATURDAY...

Sky/weather.........Partly sunny (50-60 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....71-74.
Min humidity........29-34 percent.
Wind (20 ft)........Upslope 1-4 mph.
Ridgetop wind.......Northwest 5-8 mph with afternoon gusts to around 15 mph.
Mixing height.......maximum 7500 ft AGL.
Transport winds.....West 5-10 mph increasing to around 17 mph
                    late in the afternoon.
Haines Index........3 (very low).

$$


Forecaster...Wister
Requested by...Jeff Crawford
Type of request...PRESCRIBED
.TAG 2415383.0/PDT
.DELDT 05/30/24
.FormatterVersion 2.0.0
.EMAIL jeffrey.crawford@usda.gov