902
FNUS76 KPDT 081817
FWSPDT

Spot Forecast for Catalog fire...Usfs
National Weather Service Pendleton OR
1117 AM PDT Tue Jul 8 2025

Forecast is based on forecast start time of 1100 PDT on July 08.
***Thunderstorms imply gusty and erratic winds***
***Winds are 20 foot 10-minute averages***
***CWR-Chance of wetting rain 0.10 or greater***
***Ventilation Index is derived from the
   transport wind multiplied by the mixing
   height in 100`s of feet. Index categories
   are a generalized indicator only.***

If you have questions or concerns with this forecast, please
contact our office at (541) 276-8134.

...RED FLAG WARNING IN EFFECT UNTIL 11 PM PDT THIS EVENING FOR DRY
THUNDERSTORMS...

.DISCUSSION...A front moving through the region will make for a
slight chance of thunderstorms at the site starting late this
afternoon and lasting through the evening. While the main storm
threat is expected to be east of the site, an isolated cell could
still impact the area. Conditions clear out by tomorrow, with
cooler temperatures and a slight uptick in winds expected in the
wake of this passing front.

.TODAY...

Sky/weather.........Sunny (15-25 percent), becoming partly cloudy
                    (40-50 percent) by the early evening. Chance of
                    thunderstorms starting around 2 PM (20-30 percent).
Chance of lightning.20 percent.
Max temperature.....81-84.
Min humidity........16-21 percent.
Wind (20 ft)........West winds 5 to 10 mph. Gusty and erratic
                    winds expected near thunderstorms late in the
                    afternoon.
Ridgetop wind.......West-Northwest winds 8 to 12 mph.
Ventilation Index...Fair (310).

TIME (PDT)      11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P
Chc of ltng (%).0   0   0   20  20  20  20  20  20  20  20  20
Temp............77  78  79  81  78  78  74  71  69  65  62  61
RH..............23  21  21  21  25  28  38  38  41  45  50  49
20 FT wind dir..E   E   E   W   W   W   W   W   W   NW  NW  NW
20 FT wind spd..5   5   5   6   6   6   8   8   8   8   8   8
20 FT wind gust.10  10  10  12  12  12  13  13  13  13  13  13

.TONIGHT...

Sky/weather.........Partly cloudy (40-50 percent) early in the
                    evening, becoming mostly clear (15-25 percent)
                    overnight. Chance of thunderstorms early in the
                    evening (20-30 percent).
Chance of lightning.20 percent.
Min temperature.....54-57.
Max humidity........49-54 percent.
Wind (20 ft)........West-Southwest winds 5 to 10 mph. Gusty and
                    erratic winds expected near thunderstorms in
                    the evening.
Ridgetop wind.......West-Northwest winds 5 to 10 mph.
Ventilation Index...Poor (120) decreasing to poor (30) overnight.

.WEDNESDAY...

Sky/weather.........Sunny (0-10 percent).
Chance of lightning.1 percent.
Max temperature.....71-74.
Min humidity........27-32 percent.
Wind (20 ft)........West-Northwest winds 5 to 8 mph early in the
                    morning, increasing to 7 to 14 mph by the
                    afternoon.
Ridgetop wind.......Northwest winds 8 to 16 mph.
Ventilation Index...Poor (50) increasing to good (650) in the
                    afternoon.

$$
Forecaster...Evans
Requested by...BRITTON HOLSINGER
Type of request...WILDFIRE
.TAG 2517585.0/PDT
.DELDT 07/08/25
.FormatterVersion 2.0.0
.EMAIL britton.holsinger@usda.gov,brittonholsinger1@gmail.com