187
FNUS75 KTWC 211224
FWSTWC

Spot Forecast for Fishhook Fire...Forest Service
National Weather Service Tucson AZ
524 AM MST Thu Aug 21 2025

Forecast is based on forecast start time of 0600 MST on August 21.

.DISCUSSION...Four Corners High will bring chances for rain
showers and thunderstorms through the start of the weekend.
Today`s thunderstorms will form as early as 1100 hours, around
the fire area. Storms will be moving west to southwest throughout
the day. These storms are capable of producing gusty and erratic
winds and locally brief heavy rainfall. The area has a 40 percent
chance to receive at least a tenth of an inch. Rain and storm
chances will drop off after 1900 hours today. Winds will generally
be terrain driven in the early morning hours becoming south-
southwesterly at speeds less than 10 mph. Min RHs will be 27-30
percent today and then dropping down to 23 percent for tomorrow.


.TODAY...

Sky/weather.........Sunny then becoming mostly cloudy. Chance of
                    showers and thunderstorms late in the morning.
                    Showers and thunderstorms likely late in the
                    afternoon.
Chance of pcpn......Increasing to 50 percent late in the
                    morning, then increasing to 70 percent in the
                    afternoon.
Max temperature.....86-89 degrees.
Min humidity........27-30 percent.
20-foot winds.......Light terrain driven winds up to 5 mph this morning.
                    By 1100 hours, shifting south-southwest at 5 to 9 mph
                    Gusty and erratic winds expected
                    near thunderstorms.
Mixing height.......2500 ft AGL increasing to 10900 ft AGL
                    early in the afternoon.
Transport winds.....Northwest 4 to 5 knots shifting to the
                    southwest 4 to 6 knots early in the morning,
                    then shifting to the northeast 6 to 9 knots in
                    the late morning and early afternoon shifting
                    to the north 5 to 8 knots late in the afternoon
                    shifting to the west around 6 knots.

TIME (MST)      6 AM      9 AM      NOON      3 PM
Sky (%).........28        4         67        77
Weather cov.....                    CHANCE    LIKELY
Weather type....NONE      NONE      RNSHWR    RNSHWR
Tstm cov........                    CHANCE    LIKELY
CWR.............0         0         50        70
Temp............62        79        87        84
RH..............65        39        28        29
20 FT wind......NW 2G5    S 2G6     S 5G8    SSW 8G8
Mix hgt (ft)....1300      4000      10300     6500
Transport wind..NW 5      S 6       NE 9      NE 5

.TONIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Chance of showers and thunderstorms early in
                    the evening, then slight chance of showers and
                    thunderstorms early in the evening.
Chance of pcpn......30 percent decreasing to 0 percent.
Min temperature.....61-64 degrees.
Max humidity........63-66 percent.
20-foot winds.......Southwest winds 5 to 9 mph shifting to
                    terrain driven winds less than 5 mph by 2000 hours.
                    Gusty and erratic winds expected near thunderstorms.
Mixing height.......3400 ft AGL decreasing to 1300 ft AGL.
Transport winds.....West around 7 knots shifting to the north 5 to
                    10 knots in the late evening and overnight.

TIME (MST)      6 PM      9 PM      MIDNGT    3 AM
Sky (%).........68        73        76        39
Weather cov.....CHANCE    S CHC     S CHC
Weather type....RNSHWR    RNSHWR    RNSHWR    NONE
Tstm cov........CHANCE    S CHC     S CHC
CWR.............30        20        10        0
Temp............78        71        67        64
RH..............40        54        59        62
20 FT wind......S 3G7     N 2G6     N 2G6     NW 2G5
Mix hgt (ft)....3400      1300      1300      1300
Transport wind..SW 7      N 7       N 8       N 5

.FRIDAY...

Sky/weather.........Mostly sunny then becoming mostly cloudy then
                    becoming mostly sunny. Showers and
                    thunderstorms likely late in the morning.
                    Slight chance of showers and thunderstorms late
                    in the afternoon.
Chance of pcpn......0 percent increasing to 60 percent late in the
                    morning, then decreasing to 20 percent late in
                    the afternoon.
Max temperature.....86-89 degrees.
Min humidity........23-26 percent.
20-foot winds.......Light terrain driven winds in the early morning
                    becoming south 5 to 8 mph by 1100 hours. Gusty and
                    erratic winds expected near thunderstorms late
                    in the morning.
Mixing height.......2300 ft AGL increasing to 9400 ft AGL
                    early in the afternoon.
Transport winds.....Northwest around 5 knots shifting to the north
                    around 4 knots early in the morning, then
                    shifting to the southeast 4 to 7 knots early in
                    the morning shifting to the east around 8 knots
                    early in the afternoon shifting to the south
                    around 7 knots.

TIME (MST)      6 AM      9 AM      NOON      3 PM
Sky (%).........44        22        74        74
Weather cov.....                    LIKELY    LIKELY
Weather type....NONE      NONE      RNSHWR    RNSHWR
Tstm cov........                    LIKELY    LIKELY
CWR.............0         0         60        60
Temp............62        76        86        87
RH..............64        41        26        24
20 FT wind......N 2G4     S 3G6     S 5G10    S 5G10
Mix hgt (ft)....1300      4000      8400      8400
Transport wind..NW 5      S 5       E 7       E 8

$$
Forecaster...STRONGMAN
Requested by...Berkeley Krueger
Type of request...WILDFIRE
.TAG 2520246.2/TWC
.DELDT 08/21/25
.FormatterVersion 2.0.0
.EMAIL berkeley.krueger@usda.gov

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