125
FNUS76 KPDT 252147
FWSPDT

Spot Forecast for SLIDE RANCH...SE WA IMT
National Weather Service Pendleton OR
247 PM PDT Tue Jun 25 2024

Forecast is based on forecast start time of 1800 PDT on June 25.
***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...Dry and warm conditions will persist through
the forecast period though with a 20% chance of morning
showers and thunderstorms late tonight and Wednesday. Westerly winds
will increasing to 10 to 20 mph each afternoon. Daytime RHs will be
low Wednesday (19-24 percent and higher (25-31 percent) Thursday.
Overnight recoveries will be good 60-65 percent).

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent) then becoming
                    mostly cloudy (50-60 percent). Slight chance of
                    showers and thunderstorms early in the morning.
CWR.................0 percent.
LAL.................1 until 0500, then 2.
Min temperature.....59-62.
Max humidity........57-62 percent.
Wind (20 ft)........East winds 5 to 8 mph in the early evening,
                    then shifting to the west to southwest in the
                    late evening and overnight.
                    Gusty and erratic winds expected near
                    thunderstorms early in the morning.
Ridgetop wind.......East winds 6 to 10 mph becoming west after 2200.
Mixing height.......6000 ft AGL dropping to 600 feet in the evening.
Transport winds.....Light winds becoming west around 6 mph late in
                    the evening.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (PDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Temp............88  87  83  76  72  67  65  63  63  62  61  60
RH..............20  20  26  33  36  43  48  49  49  51  52  62
20 FT wind dir..E   E   SW  SW  SW  W   W   W   W   W   W   W
20 FT wind spd..7   7   5   5   5   7   7   7   8   8   8   7
20 FT wind gust.

.WEDNESDAY...

Sky/weather.........Partly sunny (45-55 percent) then becoming
                    mostly sunny (25-35 percent). Slight chance of
                    showers and thunderstorms in the morning and
                    early afternoon.
CWR.................0 percent.
LAL.................2 until 1400, then 1.
Max temperature.....84-87.
Min humidity........19-24 percent.
Wind (20 ft)........West winds 5 to 10 mph increasing to 14 to 18
                    mph in the afternoon. Gusty and erratic winds
                    expected near thunderstorms in the morning and
                    early afternoon.
Ridgetop wind.......West winds 6 to 12 mph increasing to becoming
                    west to southwest 16 to 22 mph in the afternoon.
Mixing height.......7300 ft AGL in the afternoon.
Transport winds.....West winds 6 to 14 mph increasing to 17 to 20
                    mph late in the afternoon.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

.WEDNESDAY NIGHT...

Sky/weather.........Partly cloudy (30-40 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....53-56.
Max humidity........64-69 percent.
Wind (20 ft)........West winds 10 to 18 mph decreasing to 6 to 10
                    mph overnight.
Ridgetop wind.......West winds 12 to 22 mph decreasing to 8 to 12
                    mph overnight.
Mixing height.......600 ft AGL overnight.
Transport winds.....West winds 16 to 20 mph becoming west to
                    southwest 8 to 9 mph late in the evening.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

.THURSDAY...

Sky/weather.........Mostly sunny (25-35 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....75-78.
Min humidity........26-31 percent.
Wind (20 ft)........West winds 6 to 12 mph increasing to 10 to 17
                    mph late in the afternoon.
Ridgetop wind.......West winds 8 to 15 mph increasing to 12 to 20
                    mph late in the afternoon.
Mixing height.......8000 ft AGL in the afternoon.
Transport winds.....West winds 8 to 16 mph increasing to 12 to 20
                    mph late in the afternoon.
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

$$
Forecaster...Perry
Requested by...David Winter
Type of request...WILDFIRE
.TAG 2416553.3/PDT
.DELDT 06/25/24
.FormatterVersion 2.0.0
.EMAIL david_winter@firenet.gov