870
FNUS75 KTWC 241547
FWSTWC

Spot Forecast for Harrington...BIA
National Weather Service Tucson AZ
847 AM MST Sun Aug 24 2025

Forecast is based on forecast start time of 0900 MST on August 24.

.DISCUSSION...Chances for showers and thunderstorms each day. The
best chances today are from 2 PM to 9 PM MST. Winds will
generally be light and terrain driven, but gusty and erratic winds
of 35-45 mph will be possible with any thunderstorm. Periods of
heavy rainfall will be possible with any storm. Min RHs will
generally in the low to mid 20s with fair overnight recoveries to
the mid 50s to mid 60s.

.TODAY...

Sky/weather.........Sunny then becoming partly cloudy. Slight chance
                    of showers and thunderstorms late in the
                    morning, with increased chances in the afternoon.
Chance of pcpn......0 percent increasing to 20 percent late in the
                    morning, then increasing to 30 percent in
                    the afternoon.
Max temperature.....80-83 degrees.
Min humidity........21-24 percent.
20-foot winds.......South winds 5 to 6 mph shifting to the
                    northeast early in the afternoon, then shifting
                    to the northwest up to 5 mph late in the
                    afternoon. Gusty and erratic winds expected
                    near thunderstorms late in the morning.
Mixing height.......4100 ft AGL increasing to 9100 ft AGL late in the
afternoon decreasing to 5400 ft AGL late in the
afternoon.
Transport winds.....South 5 to 10 knots shifting to the northeast 5
                    to 6 knots late in the afternoon.

TIME (MST)      9 AM      NOON      3 PM
Sky (%).........11        38        75
Weather cov.....          S CHC     CHANCE
Weather type....NONE      RNSHWR    RNSHWR
Tstm cov........          S CHC     CHANCE
CWR.............0         20        30
Temp............71        80        79
RH..............33        24        25
20 FT wind......S 3G10    SW 4G10   N 3G10
Mix hgt (ft)....3200      7900      9100
Transport wind..S 10      S 6       SW 5

.TONIGHT...

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 late in the
                    evening.
Min temperature.....55-58 degrees.
Max humidity........59-62 percent.
20-foot winds.......West winds up to 5 mph shifting to the
                    southeast early in the evening, then shifting
                    to the northeast early in the evening. Gusty
                    and erratic winds expected near thunderstorms
                    in the evening.
Mixing height.......2400 ft AGL decreasing to 400 ft AGL early in
                    the evening.
Transport winds.....Southeast 6 to 9 knots shifting to the east
                    around 6 knots early in the morning.

TIME (MST)      6 PM      9 PM      MIDNGT    3 AM
Sky (%).........59        77        64        54
Weather cov.....S CHC     S CHC
Weather type....RNSHWR    RNSHWR    NONE      NONE
Tstm cov........S CHC     S CHC
CWR.............20        20        10        10
Temp............76        69        64        60
RH..............31        39        48        54
20 FT wind......W 2G7     E 2G6     NE 2G7    NE 2G6
Mix hgt (ft)....3900      500       600       500
Transport wind..SE 6      SE 7      SE 9      SE 7

.MONDAY...

Sky/weather.........Mostly sunny then becoming mostly cloudy.
                    Showers and thunderstorms likely late in the
                    morning. Chance of showers and thunderstorms
                    late in the afternoon.
Chance of pcpn......10 percent increasing to 60 percent late in the
                    morning, then decreasing to 50 percent late in
                    the afternoon.
Max temperature.....80-83 degrees.
Min humidity........24-27 percent.
20-foot winds.......Northeast winds up to 5 mph shifting to the
                    south 5 to 6 mph early in the morning, then
                    shifting to the southwest up to 5 mph in the
                    afternoon. Gusty and erratic winds expected
                    near thunderstorms late in the morning.
Mixing height.......2400 ft AGL increasing to 8600 ft AGL
                    in the afternoon decreasing to 5400 ft AGL.
Transport winds.....East 5 to 6 knots shifting to the southeast 6
                    to 7 knots early in the morning, then shifting
                    to the northeast around 6 knots early in the
                    afternoon shifting to the northwest late in the
                    afternoon.

TIME (MST)      6 AM      9 AM      NOON      3 PM
Sky (%).........38        14        75        75
Weather cov.....                    LIKELY    LIKELY
Weather type....NONE      NONE      RNSHWR    RNSHWR
Tstm cov........                    LIKELY    LIKELY
CWR.............10        10        60        60
Temp............56        75        81        79
RH..............60        31        25        28
20 FT wind......NE 2G7    SE 3G8    S 4G8     SW 3G10
Mix hgt (ft)....500       4600      8600      6700
Transport wind..E 6       SE 6      S 6       NE 6

$$
Forecaster...TETRAULT
Requested by...IC
Type of request...WILDFIRE
.TAG 2520567.0/TWC
.DELDT 08/24/25
.FormatterVersion 2.0.0
.EMAIL azphc@firenet.gov,charles.patterson@forestry.scat-nsn.gov

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