961
FNUS75 KTWC 161037
FWSTWC

Spot Forecast for Harrington...San Carlos Agency
National Weather Service Tucson AZ
337 AM MST Tue Sep 16 2025

Forecast is based on forecast start time of 0700 MST on September 16.

.DISCUSSION...Expect scattered showers and thunderstorms beginning late
this morning and continuing into the evening. Thunderstorm chances
continue Wednesday as well as the rest of the work week. Storms will
be capable of heavy rainfall and wind gusts to 45 mph. Outside of storms
expect wind speeds 5-10 mph. Min RH will be around 40 percent with
very good overnight recoveries.

.TODAY...

Sky/weather.........Partly cloudy then becoming mostly cloudy. Chance
                    of showers and thunderstorms late morning into the
                    afternoon.
Chance of pcpn......15 percent early in the morning, then increasing
                    to 60 percent late in the morning into the afternoon.
Max temperature.....74-77 degrees.
Min humidity........38-41 percent.
20-foot winds.......South southeast 5 to 8 mph in the morning, then
                    shifting to the southwest in the afternoon.
                    Gusty and erratic winds expected near
                    thunderstorms.
Mixing height.......7500 ft AGL.
Transport winds.....East 5 to 6 knots shifting to the southwest 6
                    to 8 knots in the late morning and afternoon.

TIME (MST)      7 AM      10 AM     1 PM      4 PM
Sky (%).........15        10        71        77
Weather cov.....          S CHC     CHANCE    CHANCE
Weather type....NONE      RNSHWR    RNSHWR    RNSHWR
Tstm cov........          S CHC     CHANCE    CHANCE
CWR.............0         15        60        60
Temp............51        68        73        71
RH..............79        49        40        42
20 FT wind......E 2G7     SE 4G8    S 6G11    SW 7G11
Mix hgt (ft)....500       3800      7500      4200
Transport wind..E 6       S 6       S 7       SW 8

.TONIGHT...

Sky/weather.........Mostly cloudy. Chance of showers and
                    thunderstorms in the evening.
Chance of pcpn......30 percent decreasing to 10 percent overnight.
Min temperature.....49-52 degrees.
Max humidity........89-92 percent.
20-foot winds.......Southwest winds up 4 to 8 mph shifting to the
                    east early in the evening and overnight. Gusty
                    and erratic winds expected near thunderstorms
                    in the evening.
Mixing height.......400 ft AGL.
Transport winds.....East 5 to 7 knots.

TIME (MST)      6 PM      9 PM      MIDNGT    3 AM
Sky (%).........53        63        59        58
Weather cov.....CHANCE    S CHC     S CHC
Weather type....RNSHWR    RNSHWR    RNSHWR    NONE
Tstm cov........CHANCE    S CHC     S CHC
CWR.............30        20        15        10
Temp............65        58        55        53
RH..............55        70        79        83
20 FT wind......SW 6G9    E 4G8     NE 4G6    NE 4G7
Mix hgt (ft)....1500      400       500       500
Transport wind..E 6       E 6       E 7       E 5

.WEDNESDAY...

Sky/weather.........Mostly cloudy. Chance of showers and
                    thunderstorms late in the afternoon.
Chance of pcpn......50 percent.
Max temperature.....72-75 degrees.
Min humidity........37-40 percent.
20-foot winds.......East winds 5 to 7 mph shifting to the
                    south southwest in the afternoon. Gusty and erratic
                    winds expected near thunderstorms.
Mixing height.......6200 ft AGL.
Transport winds.....East 4 to 5 knots shifting to the south late in
                    the morning, then shifting to the northeast 6
                    to 7 knots late in the afternoon.

TIME (MST)      6 AM      9 AM      NOON      3 PM
Sky (%).........79        67        63        78
Weather cov.....                    CHANCE    CHANCE
Weather type....NONE      NONE      RNSHWR    RNSHWR
Tstm cov........                    CHANCE    CHANCE
CWR.............0         10        50        50
Temp............50        65        72        71
RH..............90        56        39        40
20 FT wind......NE 2G6    E 2G6     SW 5G8    W 7G10
Mix hgt (ft)....400       2200      5700      4000
Transport wind..NE 5      SE 5      S 5       NE 6

$$
Forecaster...HARDIN
Requested by...Charles Patterson
Type of request...WILDFIRE
.TAG 2521895.4/TWC
.DELDT 09/16/25
.FormatterVersion 2.0.0
.EMAIL azphc@firenet.gov

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