702
FNUS76 KPDT 282147
FWSPDT

Spot Forecast for Big Eddy Blocks 2 and 3...USFS
National Weather Service Pendleton OR
247 PM PDT Tue May 28 2024

Forecast is based on ignition time of 0800 PDT on May 29.
***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...A trough of low pressure will exit the region Wednesday
with a ridge of high pressure building Thursday into Friday. Dry
weather will prevail with diurnally and slope-driven winds.

.WEDNESDAY...

Sky/weather.........Sunny (20-30 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....61-64.
Min humidity........25-30 percent.
Wind (20 ft)........Variable or drainage winds early morning,
                    becoming north winds 4-7 mph mid-morning
                    with gusts to 15 mph in the afternoon.
Ridgetop wind.......Southwest 5 mph early morning, becoming
                    north-northeast 5-8 mph by mid-morning
                    with gusts to 15 mph in the afternoon.
Mixing height.......Increasing to 6000-6500 ft AGL by afternoon.
Transport winds.....West-northwest 7-12 mph.
Haines Index........2 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (PDT)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
Temp............41     49     55     59     61     57
RH..............69     52     38     31     30     35
20 ft wind......VRB 5  N 5    N 6    N 7    N 7    NW 7
20 ft wind gust.       8      10     14     14     14

.WEDNESDAY NIGHT...

Sky/weather.........Mostly clear (20-30 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....33-36.
Max humidity........84-89 percent.
Wind (20 ft)........Northwest winds 3-6 mph in the evening
                    becoming light.
Ridgetop wind.......Northwest winds 3-6 mph in the evening
                    becoming light.
Mixing height.......Decreasing to 200-500 ft AGL overnight.
Transport winds.....Northwest 6-10 mph in the evening and
                    overnight becoming light.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

.THURSDAY...

Sky/weather.........Sunny (5-15 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....69-71.
Min humidity........21-26 percent.
Wind (20 ft)........Light slope-driven winds becoming north
                    5-8 mph with gusts of 10-14 mph in the
                    afternoon.
Ridgetop wind.......Light slope-driven winds becoming north
                    5-8 mph with gusts of 10-14 mph in the
                    afternoon.
Mixing height.......Increasing to 5500-6500 ft AGL by afternoon.
Transport winds.....Light winds becoming northwest 5-10 mph
                    late morning.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

$$
Forecaster...Plunkett
Requested by...Jeff Crawford
Type of request...PRESCRIBED
.TAG 2415226.0/PDT
.DELDT 05/28/24
.FormatterVersion 2.0.0
.EMAIL jeffrey.crawford@usda.gov