246
FNUS75 KPSR 102258
FWSPSR

Spot Forecast for Bronco Fire...USFS
National Weather Service Phoenix AZ
358 PM MST Sun Aug 10 2025

Forecast is based on forecast start time of 1600 MST on August 10.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Chances for monsoonal activity will continue Monday with afternoon
chances for thunderstorms around 30%. The threat for isolated
thunderstorm activity Monday afternoon into the early evening will
primarily pose a threat for lightning and gusty, erratic outflow
winds. Stronger thunderstorms will have the potential for producing
strong outflows with the latest guidance supporting about a 30%
chance for outflows in excess of 35 mph. Outside of any
thunderstorms and associated gusty outflows, winds will generally
follow diurnal tendencies with afternoon gusts upwards of 20-25 mph.
Min RHs Monday will be around 20%, while overnight Max RHs are
expected to be around 50-60%.

...Thunderstorms imply gusty winds...

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

.MONDAY...

Sky/weather.........Sunny (15-25 percent). Areas of smoke in the
                    afternoon. Chance of showers and thunderstorms
                    in the afternoon.
CWR.................7 percent.
Chance of thunder...26 percent.
Max temperature.....Around 92.
Min humidity........16-21 percent.
Wind (20 ft)........West winds 5 to 11 mph. Afternoon gusts around
                    20 to 25 mph. Gusty and erratic winds expected near
                    thunderstorms in the afternoon.

.MONDAY NIGHT...

Sky/weather.........Mostly cloudy (45-55 percent) then becoming
                    mostly clear (15-25 percent). Chance of showers
                    and thunderstorms in the evening.
CWR.................12 percent.
Chance of thunder...28 percent.
Min temperature.....Around 61.
Max humidity........54-59 percent.
Wind (20 ft)........West winds 5 to 8 mph shifting to the south 5
                    to 6 mph overnight becoming light and variable at times.
                    Gusty and erratic winds expected near thunderstorms in
                    the evening.

$$
Forecaster...IS
Requested by...Jim King
Type of request...WILDFIRE
.TAG 2519678.0/PSR
.DELDT 08/10/25
.FormatterVersion 2.0.0
.EMAIL james.king@usda.gov