Spot Forecast
Issued by NWS Tucson, AZ

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468
FNUS75 KTWC 240354
FWSTWC

Spot Forecast for Harrington...BIA- San Carlos Agency
National Weather Service Tucson AZ
854 PM MST Sat Aug 23 2025

Forecast is based on forecast start time of 2200 MST on August 23.

.DISCUSSION...

Daily afternoon to evening chances for showers and thunderstorms
expected near the fire site. Increasing moisture early in the
work week will lead to greater chances by Monday (from 30 percent
Sunday to 50 percent Monday). Winds outside of thunderstorms will
generally remain light and terrain driven, though gusty and erratic
winds possible with any thunderstorm. Minimum relative humidities will
increase from around 25 percent Sunday and Monday to likely greater than
30 percent Tuesday. The potential for wetting rains will be more likely
with this increase in moisture Tuesday and Wednesday.

.REST OF TONIGHT...

Sky/weather.........Mostly cloudy. Slight chance of a light rain
shower, mainly between 2200-0300.
Chance of pcpn......10 percent.
Min temperature.....55-58 degrees.
Max humidity........56-59 percent.
20-foot winds.......East downslope winds 4 to 7 mph.
Mixing height.......500 ft AGL.
Transport winds.....Southeast around 9 knots.

.SUNDAY...

Sky/weather.........Partly cloudy in the morning, then becoming
mostly cloudy by the early afternoon. Chance of
                    showers and thunderstorms in the afternoon.
Chance of pcpn......30 percent.
Max temperature.....80-83 degrees.
Min humidity........23-26 percent.
20-foot winds.......Southeast winds 5 to 7 mph in the morning
shifting to the southwest 5 to 9 mph in the
afternoon. Gusty and erratic winds possible
near thunderstorms in the afternoon.
Mixing height.......Increasing to 9500 ft AGL.
Transport winds.....Southeast around 7 knots shifting to the
                    southwest in the afternoon.

.SUNDAY NIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Slight chance of showers and thunderstorms in
                    the evening.
Chance of pcpn......20 percent decreasing to 10 percent overnight.
Min temperature.....55-58 degrees.
Max humidity........64-67 percent.
20-foot winds.......Light winds becoming east around 5 mph
                    overnight. Gusty and erratic winds possible
                    near thunderstorms in the evening.
Mixing height.......2800 ft AGL decreasing to 400 ft AGL early in
                    the evening.
Transport winds.....East around 8 knots.

.MONDAY...

Sky/weather.........Partly sunny. Chance of showers and
                    thunderstorms in the afternoon.
Chance of pcpn......50 percent.
Max temperature.....79-82 degrees.
Min humidity........25-28 percent.
20-foot winds.......Southeast winds 5 to 8 mph in the morning
shifting to the southwest in the afternoon.
Gusty and erratic winds expected near
thunderstorms in the afternoon.
Mixing height.......Increasing to 8200 ft AGL.
Transport winds.....Southeast around 6 knots shifting to the southwest
                    in the afternoon.

$$
Forecaster...EDWARDS
Requested by...Ryan Shatto
Type of request...WILDFIRE
.TAG 2520552.0/TWC
.DELDT 08/23/25
.FormatterVersion 2.0.0
.EMAIL Charles.patterson@forestry.scat-nsn.gov

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