707 
FNUS76 KPDT 272133
FWSPDT

Spot Forecast for Black Butte...USDA
National Weather Service Pendleton OR
233 PM PDT Fri Aug 27 2021

Forecast is based on forecast start time of 1400 PDT on August 28. 
***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.

re-transmitted

.DISCUSSION...A northwest flow will prevail behind a departing
weather disturbance. This will funnel wind through the canyon
today. Otherwise conditions will be fair with just some clouds
at times, especially this morning. Warmer temperatures and lower
RH's are expected for Saturday as an upper ridge develops over 
the region.

.SATURDAY...

Sky/weather.........Sunny (0-5 percent). 
CWR.................0 percent. 
LAL.................1. 
Max temperature.....79-82. 
Min humidity........9-14 percent. 
Wind (20 ft)........Northwest 5-10 mph.
Ridgetop wind.......Northwest 8-15 mph.
Mixing height.......5500 ft AGL. 
Transport winds.....Northwest 10-18 mph.
Haines Index........4 or low potential for large plume dominated 
                    fire growth. 

.SATURDAY NIGHT...

Sky/weather.........Clear (0-10 percent). 
CWR.................0 percent. 
LAL.................1. 
Min temperature.....50-53. 
Max humidity........33-38 percent. 
Wind (20 ft)........Becoming drainage 0-4 mph after sunset.
Ridgetop wind.......Becoming north 1-5 mph after sunset.
Mixing height.......5400 ft AGL early in the evening, then near 
                    surface.
Transport winds.....Becoming variable 1-5 mph.
Haines Index........4 or low potential for large plume dominated 
                    fire growth. 

.SUNDAY...

Sky/weather.........Sunny (0-5 percent). 
CWR.................0 percent. 
LAL.................1. 
Max temperature.....86-89. 
Min humidity........6-11 percent. 
Wind (20 ft)........Variable 1-5 mph early becoming mostly 
                    southeast 2-6 mph in the afternoon.
Ridgetop wind.......Becoming east 3-7 mph by afternoon.
Mixing height.......12000 ft AGL. 
Transport winds.....West to northwest 5-10 mph.
Haines Index........4 or low potential for large plume dominated 
                    fire growth. 

$$

Forecaster...Cloutier
Requested by...Colleen Malaney
Type of request...WILDFIRE
.TAG 2117789.0/PDT
.DELDT 08/28/21
.FormatterVersion 2.0.0
.EMAIL colleen.malaney@usda.gov