427
FNUS75 KPSR 190122
FWSPSR

Spot Forecast for TRI State - Six...AZ-DFFM
National Weather Service Phoenix AZ
622 PM MST Tue Aug 18 2026

Forecast is based on forecast start time of 1800 MST on August 18.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
An outflow boundary will abruptly shift winds out of the
north/northeast within the next hour, with gusts to around 25 mph.
Winds will gradually relax and eventually settle out of a
downslope/downvalley direction, southwesterly, overnight. Slight
chances for showers and thunderstorms Wednesday afternoon into
the evening and again Thursday afternoon will present a risk for
strong, gusty and erratic winds. Afternoon minimum humidities
around 25% will follow good overnight recoveries near 50%. Above
normal temperatures with highs in the upper 90s and lows in the
middle to upper 70s will prevail.

...Thunderstorms imply gusty winds...

Note...Additional Fire Weather Forecast information can be found
in the Area Forecast Discussion. See product PHXAFDPSR.

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent).
CWR.................4 percent.
Chance of thunder...12 percent.
Min temperature.....Around 77.
Max humidity........45-50 percent.
Wind (20 ft)........East winds 6 to 10 mph abruptly shifting
                    northeast in the next hour with a distant
                    thunderstorm outflow. Gusts up to around 25 mph
                    will subside with winds settling out of the
                    southwest overnight 5 to 8 mph.

.WEDNESDAY...

Sky/weather.........Sunny (10-20 percent). Chance of showers and
                    thunderstorms in the afternoon.
CWR.................9 percent.
Chance of thunder...27 percent.
Max temperature.....Around 98.
Min humidity........22-27 percent.
Wind (20 ft)........Light southwest winds shifting northwest
                    after sunrise 5 to 15 mph. Gusty and erratic
                    winds expected near thunderstorms in the
                    afternoon.

.WEDNESDAY NIGHT...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    partly cloudy (40-50 percent). Slight chance of
                    showers and thunderstorms in the evening.
CWR.................14 percent.
Chance of thunder...23 percent.
Min temperature.....Around 76.
Max humidity........50-55 percent.
Wind (20 ft)........South winds 6 to 15 mph shifting to the
                    west northwest 6 to 11 mph overnight. Gusty and
                    erratic winds expected near thunderstorms in
                    the evening.

.THURSDAY...

Sky/weather.........Mostly sunny (35-45 percent). Slight chance of
                    showers and thunderstorms in the afternoon.
CWR.................5 percent.
Chance of thunder...21 percent.
Max temperature.....Around 98.
Min humidity........23-28 percent.
Wind (20 ft)........West winds 3 to 8 mph in the early morning
                    eventually shifting northeast to east.
                    Gusts up to 20 mph in the afternoon. Gusty
                    and erratic winds expected
                    near thunderstorms in the afternoon.

$$
Forecaster...TW
Requested by...ADC
Type of request...WILDFIRE
.TAG 2619983.0/PSR
.DELDT 08/18/26
.FormatterVersion 2.0.0
.EMAIL aidclogistics@dffm.az.gov