761
FNUS76 KPDT 290100
FWSPDT

Spot Forecast for Cold Canal 506...USFS WWF
National Weather Service Pendleton OR
600 PM PDT Sat Sep 28 2024

Forecast is based on forecast start time of 1732 PDT on September 28.
***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...Winds have increased ahead of a cold front off the eastern
Pacific.  Although there will be a lull in the winds overnight, they will
increase Sunday morning.  Winds will shift to a WNW direction behind the
front Sunday afternoon.  There will be very dry air accompanying the front,
therefore it will be cool by low RHs behind the system.


.REST OF TODAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....81.
Min humidity........20 percent.
Wind (20 ft)........South 7 gusting to 13 mph.
Ridgetop wind.......South 10-15 mph
Mixing height.......2000 ft AGL.
Transport winds.....South around 15 mph.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.


TIME (PDT)      5 PM   7 PM   9 PM   11 PM  1 AM
Temp............76     66     61     58     55
RH..............23     31     35     37     44
20 ft wind......S 7    S 6    VRB 3  N 3    N 3
20 ft wind gust.13


.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
LAL.................1.
Min temperature.....45-48.
Max humidity........66-71 percent.
Wind (20 ft)........South winds 5-7 mph shifting to the
                    downslope (NNW) 2-5 mph after 2100.
Ridgetop wind.......South-Southwest 10-15 mph.
Mixing height.......1000 ft AGL.
Transport winds.....South 12 to 15 mph shifting to the west around
                    8 mph late in the evening, then shifting to the
                    northwest early in the morning.
Haines Index........4 low potential for large
                    plume dominated fire growth.

.SUNDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....61-64.
Min humidity........19-24 percent.
Wind (20 ft)........Upslope (South) 3-6 mph increasing to 8-12 mph by mid morning
                    becoming West-Northwest 8-12 after 1400 PDT.
Ridgetop wind.......West-Southwest 8-12 mph becoming Northwest 10-15
                    mph after 1400 PDT. Gusts to 25 mph after 1400 ODT,
Mixing height.......4500 ft AGL.
Transport winds.....Northwest 10-17 mph.
Haines Index........3 or very low potential for large
                    plume dominated fire growth.

TIME (PDT)      7 AM   9 AM   11 AM  1 PM   3 PM   5 PM
Temp............46     56     61     64     60     52
RH..............66     31     25     25     20     22
20 ft wind......N 2    SSE 5  S 10   SW 8   WNW 8  WNW 12
20 ft wind gust.       10     15     15     15     17

$$


Forecaster...Wister
Requested by...Todd Pederson
Type of request...WILDFIRE
.TAG 2423116.1/PDT
.DELDT 09/28/24
.FormatterVersion 2.0.0
.EMAIL todd.pederson@usda.gov,mark.moeller@usda.gov