194
FNUS76 KPDT 081258
FWSPDT

Spot Forecast for Rocky 79...USFS
National Weather Service Pendleton OR
558 AM PDT Sat Jun 8 2024

Forecast is based on ignition time of 0600 PDT on June 08.
***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 shortwave trough and cold front will move across
today into Sunday and bring a slight risk of showers and
thunderstorms to the site along with increasing winds on Sunday.
Look for winds to be light this morning, then becoming
northeasterly during the late morning before finally turning
northwesterly by the late afternoon. Northwesterly winds then
expected into the nighttime hours, becoming more westerly by
Sunday and then increasing notably, gusting into the 20 mph range.
Probability of a shower or thunderstorm moving over the site late
tonight is low (>20%) but cannot be ruled out. If a shower or
storm does move near the site, expect gusty and erratic winds to
be possible.

.TODAY...

Sky/weather.........Sunny (20-30 percent) then becoming partly
                    sunny (50-60 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....83-86.
Min humidity........26-31 percent.
Wind (20 ft)........Northeast winds 5 to 7 mph late in the morning,
then shifting to the northwest 5 to 8 mph late
in the afternoon.
Ridgetop wind.......Northeast winds 5 to 10 mph late in the morning,
then shifting to the northwest 5 to 10 mph late
in the afternoon.
Mixing height.......6100 ft AGL.
Transport winds.....Northwest around 5 mph early in the morning
                    becoming light, then becoming north 5 to 6 mph
                    late in the morning shifting to the northwest
                    around 9 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

TIME (PDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Temp............61     67     76     79     82     83
RH..............46     43     35     31     31     34
20 ft wind......NW 4   E 3    ENE 3  NE 5   N 6    NW 6
20 ft wind gust. 6     8       8

.TONIGHT...

Sky/weather.........Partly cloudy (45-55 percent) then becoming
                    mostly cloudy (65-75 percent). Slight chance of
                    thunderstorms overnight. Slight chance of
                    showers overnight.
CWR.................0 percent.
LAL.................1 until 0200, then 2 until 0500, then 1.
Min temperature.....Around 60.
Max humidity........52-57 percent.
Wind (20 ft)........Northwest winds 5 to 8 mph shifting to the west
                    in the morning. Gusty and erratic winds expected
near thunderstorms overnight.
Ridgetop wind.......Northwest winds 5 to 10 mph shifting to the west
in the morning.
Mixing height.......700 ft AGL.
Transport winds.....West 8 to 9 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

.SUNDAY...

Sky/weather.........Mostly cloudy (70-80 percent) then becoming
                    sunny (5-15 percent). Slight chance of rain
                    showers in the morning.
CWR.................0 percent.
LAL.................1.
Max temperature.....79-82.
Min humidity........29-34 percent.
Wind (20 ft)........West winds 5 to 10 mph. Gusts up to 22 mph late
                    in the afternoon.
Ridgetop wind.......West winds 6 to 12 mph with gusts to 25 mph late
in the afternoon.
Mixing height.......6100 ft AGL.
Transport winds.....West 7 to 14 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

.FORECAST DAYS 3 THROUGH 7...
.MONDAY...
Clear. Lows in the lower 50s. Highs in the upper 70s. Light
winds.
.TUESDAY...
Mostly clear. Lows in the lower 50s. Highs in the mid 70s. West
winds around 5 mph.
.WEDNESDAY...
Clear. Lows in the upper 40s. Highs in the mid 70s. West winds
around 5 mph.
.THURSDAY...
Mostly clear. Lows in the upper 40s. Highs in the upper 70s.
.FRIDAY...
Mostly clear. Lows in the upper 40s. Highs in the lower 70s.

$$
Forecaster...Goatley
Requested by...Andrew Bellairs
Type of request...PRESCRIBED
.TAG 2415667.2/PDT
.DELDT 06/08/24
.FormatterVersion 2.0.0
.EMAIL richard.lancaster@usda.gov,andrew.s.bellairs@usda.gov