296
FNUS75 KTWC 310211
FWSTWC

Spot Forecast for 861...USFS
National Weather Service Tucson AZ
711 PM MST Sat Aug 30 2025

Forecast is based on forecast start time of 1800 MST on August 30.

.DISCUSSION...Mostly clear conditions expected tonight with light terrain
driven winds out of the southwest. Tomorrow morning around 7 am winds
will become east to northeasterly. In the afternoon, northeast winds will
increase with peak afternoon gusts to around 20 mph. Minimum relative
humidity will be between 20-30 percent. Overnight recoveries will be around
35-45 percent tonight with improving recoveries for Sunday and Monday nights.
Scattered thunderstorms are possible each afternoon and evening with day to
day variability. Gusty and erratic winds are expected near any thunderstorms.
Beginning on Labor Day (Monday) the upper flow pattern will shift resulting in
increasing moisture and morewidespread storm chances.

.TONIGHT...

Sky/weather.........Mostly clear.
Chance of pcpn......10 percent.
Min temperature.....65-68 degrees.
Max humidity........42-45 percent.
20-foot winds.......southwest 5 to 10 mph.
Mixing height.......4800 ft AGL decreasing to 100 ft AGL.
Transport winds.....Northwest 4 to 11 knots shifting to the south
                    around 4 knots early in the morning.

.SUNDAY...

Sky/weather.........Mostly sunny. Chance of showers and
                    thunderstorms in the afternoon.
Chance of pcpn......0 percent increasing to 50 percent.
Max temperature.....91-94 degrees.
Min humidity........24-27 percent.
20-foot winds.......Southwest winds 5 to 10 mph becoming easterly to
northeasterly at 8 to 13 mph after 7 am. Peak
afternoon gusts around 20 mph. Gusty and erratic
winds expected near thunderstorms.
Mixing height.......1500 ft AGL increasing to 8300 ft AGL
                    late in the afternoon decreasing to 6000 ft
                    AGL.
Transport winds.....South 4 to 5 knots shifting to the southeast 5
                    to 9 knots early in the morning.

.SUNDAY NIGHT...

Sky/weather.........Mostly cloudy. Chance of showers and
                    thunderstorms.
Chance of pcpn......50 percent decreasing to 10 percent.
Min temperature.....64-67 degrees.
Max humidity........68-71 percent.
20-foot winds.......Northeast at 6 to 11 mph becoming southeast after
6 pm. Gusty and erratic winds expected near storms.
Mixing height.......200 ft AGL decreasing to 100 ft AGL in the late
                    evening and overnight.
Transport winds.....Southeast 10 to 13 knots.


.LABOR DAY...

Sky/weather.........Partly sunny. Chance of showers and thunderstorms
in the afternoon.
Chance of pcpn......10 percent increasing to 30 percent.
Max temperature.....87-90 degrees.
Min humidity........30-33 percent.
20-foot winds.......Southwest winds 5 to 10 mph becoming northeasterly
at 7 to 12 mph after 7 am. Peak afternoon gusts around
20 mph. Gusty and erratic winds expected near storms.
Mixing height.......2400 ft AGL increasing to 6500 ft AGL
                    decreasing to 4500 ft AGL.
Transport winds.....Southeast 12 to 15 knots.


$$
Forecaster...Van Stratten
Requested by...KWILLIAMSON
Type of request...WILDFIRE
.TAG 2521013.0/TWC
.DELDT 08/30/25
.FormatterVersion 2.0.0
.EMAIL AZTDC@FIRENET.GOV

Visit us on Facebook...Twitter...YouTube...and at weather.gov/Tucson