864
FNUS76 KPDT 170820
FWSPDT

Spot Forecast for K-Block Fire...Oregon Military Department
National Weather Service Pendleton OR
120 AM PDT Wed Jul 17 2024

Forecast is based on forecast start time of 0000 PDT on July 17.
***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.

...RED FLAG WARNING IN EFFECT UNTIL 5 PM PDT THIS AFTERNOON FOR
ABUNDANT LIGHTNING...
...HEAT ADVISORY IN EFFECT UNTIL 10 PM PDT THURSDAY...

.DISCUSSION...A storm threat will bring risk for lightning and
outflow winds starting in the small hours through this afternoon.
Activity early tonight has been confined to central OR and west
of the Cascades. Threat for storms increases after 5 AM peaking
3-7 PM PDT with chances around 15-25% thus low confidence.
However, outflow winds from nearby or dissipating storms could
cause uptick in winds at the location. Fair RH recovery overnight.
Hot, dry conditions today with generally light winds deep mixing
tomorrow.

.TONIGHT...

Sky/weather.........Mostly clear (20-30 percent) then becoming
                    mostly cloudy (80-90 percent). Slight chance of
                    showers and thunderstorms after 4 AM PDT.
CWR.................5 percent.
LAL.................1 until 0400, then 2.
Min temperature.....64-66.
Max humidity........40-45 percent.
Wind (20 ft)........Southwest winds 4 to 6 mph. Gusty and erratic
                    winds expected near any thunderstorms early
                    in the morning.
Mixing height.......500 ft AGL.
Transport winds.....Light then becoming southwest around 5 mph
                    early in the morning.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

TIME (PDT)      2 AM   4 AM   6 AM   8 AM   10 AM
Temp............67     66     65     74     81
RH..............38     40     44     42     37
20 ft wind......SSW 6  SW 6   SW 5   SE 6   SE 7
20 ft wind gust.                     10     10

.TODAY...

Sky/weather.........Cloudy (85-95 percent) then becoming mostly
                    sunny (25-35 percent). Slight chance of showers
                    and thunderstorms.
CWR.................5 percent.
LAL.................2.
Max temperature.....102-104.
Min humidity........10-12 percent.
Wind (20 ft)........South winds 4 to 6 mph sifting to the north
                    northwest late in the morning 5 to 10 mph
                    afternoon. Gusty and erratic winds expected
                    near any thunderstorms.
Mixing height.......8900 ft AGL.
Transport winds.....South around 5 mph shifting to the east 6
                    to 9 mph early in the morning then becoming
                    west 10 to 15 mph late in the afternoon after
                    5 PM.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

.WEDNESDAY NIGHT...

Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....68-70.
Max humidity........61-66 percent.
Wind (20 ft)........West winds 5 to 10 mph shifting to the
                    southwest 6 to 12 mph late in the evening.
Mixing height.......500 ft AGL.
Transport winds.....West around 10 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

.THURSDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....101-104.
Min humidity........12-17 percent.
Wind (20 ft)........Southwest winds 7 to 14 mph with gusts up to
                    20 mph
Mixing height.......7600 ft AGL.
Transport winds.....Southwest 9 to 12 mph.
Haines Index........3 to 4 or very low to low potential for large
                    plume dominated fire growth.

$$
Forecaster...Townsend
Requested by...Joseph Winckler
Type of request...WILDFIRE
.TAG 2418243.0/PDT
.DELDT 07/17/24
.FormatterVersion 2.0.0
.EMAIL joseph.j.winckler.nfg@army.mil