423
FNUS76 KPDT 091631
FWSPDT

Spot Forecast for North Fork McKay Pile Rx...BIA-OR-UMA
National Weather Service Pendleton OR
831 AM PST Thu Jan 9 2025

Forecast is based on ignition time of 0800 PST on January 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...A ridge of high pressure will persist through tonight,
giving way to a trough of low pressure by late Friday morning and
afternoon. Dry conditions and southeasterly winds under the ridge will
yield to rain and increasing westerly winds with the trough passage.
Breezy westerly winds and a chance of light snow will persist Friday
night into Saturday.

.REST OF TODAY...

Sky/weather.........Mostly sunny (20-30 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....35-38.
Min humidity........63-68 percent.
Wind (20 ft)........South-southeast winds 1-3 mph, becoming southeast
                    5 to 7 mph late in the afternoon.
Ridgetop wind.......South-southeast winds 1-3 mph, becoming southeast
                    5 to 7 mph late in the afternoon.
Mixing height.......Increasing to 500-800 ft AGL early in the afternoon.
Transport winds.....East-southeast 1-3 mph, becoming south-southeast
                    7-10 mph late in the afternoon.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (PST)      8 AM   10 AM  NOON   2 PM   4 PM   6 PM
Temp............24     29     32     34     32     31
RH..............93     81     80     79     72     72
20 ft wind......SE 2   E 2    E 4    SE 4   SE 5   SE 5
20 ft wind gust.              6      6      8      9

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (60-70 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....30-33.
Max humidity........67-72 percent.
Wind (20 ft)........Southeast winds 6 to 10 mph, gusts up to 15 mph.
Ridgetop wind.......Southeast winds 8 to 13 mph, gusts up to 20 mph.
Mixing height.......Decreasing to near surface overnight.
Transport winds.....South 10 to 15 mph.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

.FRIDAY...

Sky/weather.........Mostly cloudy (75-85 percent). Rain likely in
                    the late morning and early afternoon. Chance of
                    rain late in the afternoon.
CWR.................0 percent increasing to 74 percent in the late
                    morning and early afternoon, then decreasing to
                    34 percent late in the afternoon.
LAL.................1.
Max temperature.....40-43.
Min humidity........48-53 percent.
Wind (20 ft)........South winds 6 to 10 mph shifting to the southwest
                    then west 15 to 20 mph with gusts of 25 to 35 mph
                    late in the afternoon.
Ridgetop wind.......South winds 8 to 13 mph shifting to the southwest
                    then west 15 to 25 mph with gusts of 25 to 35 mph
                    late in the afternoon.
Mixing height.......Increasing to 500-1000 ft AGL in the afternoon.
Transport winds.....South around 15 mph becoming southwest then west
                    20 to 30 mph in the afternoon.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

$$
Forecaster...Plunkett
Requested by...Sydney Thompson
Type of request...PRESCRIBED
.TAG 2500340.0/PDT
.DELDT 01/09/25
.FormatterVersion 2.0.0
.EMAIL sydneythompson@ctuir.org,thompson9076@gmail.com