371
FNUS76 KPDT 150156
FWSPDT

Spot Forecast for WASTEWATER FIRE...YKFD
National Weather Service Pendleton OR
656 PM PDT Mon Jul 14 2025

Forecast is based on forecast start time of 1900 PDT on July 14.
***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
WIND AND LOW RELATIVE HUMIDITY...

...HEAT ADVISORY IN EFFECT UNTIL 8 PM PDT THIS EVENING...

.DISCUSSION...Northwest breezy winds will continue into tonight
as an upper weather system skirts the region to the northeast.
Winds will become northerly late tonight, then switch to the
northeast as a slightly cooler airmass pushes into the region.
Overnight RH recovery tonight will be moderate, with the
afternoon RH in the mid 20s tomorrow. Haze from area and
regional smoke may develop by tomorrow morning under a
strengthening low level inversion overnight.



.REST OF TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
Chance of lightning.0 percent.
Min temperature.....64-67.
Max humidity........50-55 percent.
Wind (20 ft)........Northwest winds 10 to 17 mph with gusts
up to 30 mph, becoming north winds 5 to
11 mph after 12AM.
Mixing height.......800 ft AGL.
Transport winds.....Northwest 14 to 22 mph shifting to the north 10
                    to 12 mph overnight.
Ventilation Index...Excellent (710) decreasing to poor (90)
                    overnight.

TIME (PDT)      7 PM   9 PM   11 PM  1 AM   3 AM   5 AM
Chc of ltng (%).0      0      0      0      0      0
Temp............88     80     74     71     67     64
RH..............27     34     39     45     51     55
20 ft wind......NW 17  NW 15  NW 11  NW 11  N 8    N 8
20 ft wind gust.24     24     18     18     14     14

.TUESDAY...

Sky/weather.........Sunny (5-15 percent). Haze late in the morning.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....89-92.
Min humidity........22-27 percent.
Wind (20 ft)........North winds 5 to 10 mph shifting to the
                    northeast 7 to 12 mph after 11AM.
Mixing height.......8600 ft AGL.
Transport winds.....North around 12 mph increasing to 17 to 22 mph
                    early in the morning.
Ventilation Index...Fair (440) increasing to excellent (1050) in
                    the afternoon.

$$
Forecaster...Lawhorn
Requested by...BT291
Type of request...WILDFIRE
.TAG 2518022.0/PDT
.DELDT 07/14/25
.FormatterVersion 2.0.0
.EMAIL JESSICA.FINNELL@yakimawa.gov