651
FNUS76 KPDT 092350
FWSPDT

Spot Forecast for Williams Mine...Klickitat County Fire District 1
National Weather Service Pendleton OR
450 PM PDT Fri Aug 9 2024

Forecast is based on forecast start time of 1800 PDT on August 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 weather system currently bearing down on the
Pacific Northwest will bring shower and thunderstorm chances to
the Cascades tonight and tomorrow. For tonight, the bulk of shower
and thunderstorm activity is expected north of the site, but a
stray cell could still develop before 11 pm tonight before drying
out overnight. Better chances exist tomorrow, primarily during the
late morning and early afternoon hours, but storm cells are still
expected to be spotty in nature. Outside of storm chances, expect
generally light NW winds and gradually cooling conditions, leading
to improving RH recoveries.


.TONIGHT...

Sky/weather.........Mostly cloudy (80-90 percent) then becoming
                    partly cloudy (30-40 percent). Slight chance of
                    showers and thunderstorms early in the evening
                    (15-20 percent until 2300), then dry overnight.
                    Patchy smoke.
CWR.................2 percent.
LAL.................2 until 2300, then 1.
Min temperature.....Around 60.
Max humidity........73-78 percent.
Wind (20 ft)........Light and variable winds around 5 mph early
                    in the evening, becoming Northwest overnight.
                    Gusty and erratic winds expected near
                    thunderstorms in the evening.
Mixing height.......4000 ft AGL early in the evening, then near-
                    surface overnight.
Transport winds.....Northwest around 6 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

TIME (PDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Temp............87     80     73     68     64     61
RH..............29     42     55     59     66     72
20 ft wind......N 3    NW 4   NW 5   NW 5   NW 5   NW 5
20 ft wind gust.7      6      6      6      6      6

.SATURDAY...

Sky/weather.........Sunny (10-20 percent). Areas of smoke through
                    the day. Slight chance of showers and
                    thunderstorms late in the morning (15-20
                    percent).
CWR.................8 percent.
LAL.................1 until 1100, then 2 until 1700, then 1.
Max temperature.....89-92.
Min humidity........28-33 percent.
Wind (20 ft)........Northwest winds 5 to 10 mph. Gusty and erratic
                    winds expected near thunderstorms late in the
                    morning.
Mixing height.......8300 ft AGL by the afternoon.
Transport winds.....West-Northwest winds 6 to 12 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

.SATURDAY NIGHT...

Sky/weather.........Mostly clear (5-15 percent). Areas of smoke.
CWR.................2 percent.
LAL.................1.
Min temperature.....53-56.
Max humidity........86-91 percent.
Wind (20 ft)........Northwest winds 5 to 8 mph.
Mixing height.......4200 ft AGL early in the evening, then near-
                    surface overnight.
Transport winds.....West-Northwest 7 to 14 mph, decreasing to around
                    8 mph overnight.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

$$
Forecaster...Evans
Requested by...Mark Henrichs
Type of request...WILDFIRE
.TAG 2419986.0/PDT
.DELDT 08/09/24
.FormatterVersion 2.0.0
.EMAIL mark_henrichs@firenet.gov