773
FNUS76 KPDT 201237
FWSPDT

Spot Forecast for How Go RX...Roslyn Fire
National Weather Service Pendleton OR
537 AM PDT Fri Sep 20 2024

Forecast is based on ignition time of 0800 PDT on September 20.
***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 weather system passing to the north will
continue providing a westerly wind today which decreases
overnight becoming light and variable by Saturday morning.
Otherwise, conditions remain dry under persisting northwest
flow as a ridge of high pressure off the coast begins moving
inland overnight and Saturday.

.REST OF TODAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....60-65.
Min humidity........35-40 percent.
Wind (20 ft)........West to northwest winds 5 to 9 mph.
Ridgetop wind.......West to northwest 6 to 10 mph.
Mixing height.......3000 ft AGL.
Transport winds.....West around 13 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

.TONIGHT...

Sky/weather.........Mostly clear (20-30 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....40-44.
Max humidity........75-85 percent.
Wind (20 ft)........West to northwest winds 3 to 7 mph.
Ridgetop wind.......West to northwest 4 to 8 mph.
Mixing height.......800 ft AGL in the evening.
Transport winds.....Northwest around 8 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

.SATURDAY...

Sky/weather.........Mostly sunny (25-35 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....65-70.
Min humidity........25-30 percent.
Wind (20 ft)........Light winds becoming west 3 to 5 mph in the
                    afternoon.
Ridgetop wind.......Variable 3 to 6 mph becoming west in the
                    afternoon.
Mixing height.......3500 ft AGL early in the morning.
Transport winds.....Variable around 5 mph becoming west in the
                    afternoon.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

$$
Forecaster...Solomon
Requested by...Chris Martin
Type of request...PRESCRIBED
.TAG 2422679.0/PDT
.DELDT 09/20/24
.FormatterVersion 2.0.0
.EMAIL chris.martin@roslynfire.org