925
FNUS75 KTWC 110641
FWSTWC

Spot Forecast for Steeple Fire...USFS
National Weather Service Tucson AZ
1141 PM MST Sun May 10 2026

Forecast is based on forecast start time of 0700 MST on May 11.

.DISCUSSION...Dry conditions will prevail at the fire site Monday
with southerly breezes for most of the day. A modest amount
of mid level moisture will move in for Tuesday resulting in
some cloud build-ups and a slight chance (10 percent) of dry
thunderstorms. If this were to occur in/near the fire site then
gusty and erratic winds would occur. Otherwise, winds will remain
light Tuesday.

.MONDAY...

Sky/weather.........Sunny.
Chance of pcpn......0 percent.
Max temperature.....68-71 degrees.
Min humidity........18-21 percent.
20-foot winds.......South winds 6 to 12 mph.
Smoke dispersal.....Poor (5600 knot-ft) early in the morning
                    increasing to to very good (73900
                    knot-ft).
Mixing height.......2700 ft AGL increasing to 10500 ft AGL.
Transport winds.....South 6 to 7 knots shifting to the southwest
                    around 9 knots in the afternoon.

TIME (MST)      7 AM      10 AM     1 PM      4 PM
Sky (%).........2         1         1         24
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
CWR.............0         0         0         0
Temp............51        63        68        69
RH..............38        31        23        19
20 FT wind......S 4G10    SE 6G14   S 6G12    SW 5G10
Mix hgt (ft)....900       4200      9800      10500
Transport wind..SE 6      S 7       SW 9      W 9
Vrate kt-ft/1K..6         30        88        95
Ventrate Cat....POOR      FAIR      VYGD      VYGD

.MONDAY NIGHT...

Sky/weather.........Mostly clear.
Chance of pcpn......0 percent.
Min temperature.....48-51 degrees.
Max humidity........40-43 percent.
20-foot winds.......Southwest winds 4 to 8 mph becoming
                    downslope/downvalley 3 to 6 mph after 2200.
Smoke dispersal.....Very good (79700 knot-ft) decreasing to
                    poor (2500 knot-ft) late in the
                    night.
Mixing height.......8000 ft AGL decreasing to 500 ft AGL.
Transport winds.....Southwest 6 to 10 knots shifting to the west.

TIME (MST)      6 PM      9 PM      MIDNGT    3 AM
Sky (%).........29        4         4         1
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
CWR.............0         0         0         0
Temp............66        56        53        51
RH..............21        31        35        38
20 FT wind......SW 5G11   W 3G7     W 3G8     SW 3G7
Mix hgt (ft)....8000      500       600       500
Transport wind..W 10      SW 9      SW 6      S 6
Vrate kt-ft/1K..80        5         3         3
Ventrate Cat....VYGD      POOR      POOR      POOR

.TUESDAY...

Sky/weather.........Mostly Sunny. Slight chance (10 percent) of dry
                    thunderstorm.
Chance of pcpn......10 percent.
Max temperature.....72-75 degrees.
Min humidity........15-18 percent.
20-foot winds.......Upslope/upvalley 2 to 5 mph shifting to
                    the south 5 to 10 mph in the late morning and
                    afternoon.
Smoke dispersal.....Poor (2700 knot-ft) increasing to excellent
                    (112400 knot-ft).
Mixing height.......1100 ft AGL increasing to 14300 ft AGL in the
                    afternoon.
Transport winds.....Northwest around 5 knots shifting to the south
                    7 to 11 knots in the late morning and
                    afternoon.

TIME (MST)      6 AM      9 AM      NOON      3 PM
Sky (%).........2         0         6         46
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
CWR.............0         0         10        10
Temp............51        70        71        72
RH..............40        21        17        16
20 FT wind......NW 3G6    S 3G6     S 4G10    S 5G10
Mix hgt (ft)....500       6900      13600     13900
Transport wind..NW 5      SE 7      S 8       S 11
Vrate kt-ft/1K..3         48        109       153
Ventrate Cat....POOR      GOOD      EXNT      EXNT

$$
Forecaster...LADER
Requested by...FMO
Type of request...WILDFIRE
.TAG 2613300.0/TWC
.DELDT 05/11/26
.FormatterVersion 2.0.0
.EMAIL kohl.pelts@usda.gov,matthew.moe@usda.gov

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