121
FNUS75 KTWC 201343
FWSTWC

Spot Forecast for ODonnell Rx...USFS
National Weather Service Tucson AZ
643 AM MST Tue Jan 20 2026

Forecast is based on ignition time of 0800 MST on January 22.

.DISCUSSION...An approaching weather system will bring breezy
conditions Thursday and Friday with 20-foot winds out of the
southwest up to 25 mph at times, especially on Friday. This
weather system will also bring a good chance of showers late
Thursday night into Friday.

.THURSDAY...

Sky/weather.........Mostly cloudy. A slight chance of a light
                    shower late in the afternoon.
Chance of pcpn......10 percent.
Max temperature.....66-69 degrees.
Min humidity........16-19 percent.
20-foot winds.......Southwest winds 6 to 11 mph. Gusts up to 21 mph
                    late in the afternoon.
Mixing height.......1800 ft AGL increasing to 5400 ft AGL.
Transport winds.....Southwest 8 to 13 knots.
Smoke dispersal.....Poor (3000 knot-ft) early in the morning
                    increasing to good (70400 knot-ft) early in the
                    afternoon then decreasing to fair (38100 knot-ft)
                    late in the afternoon.

TIME (MST)      8 AM      11 AM     2 PM      5 PM
Sky (%).........74        61        70        77
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
CWR.............0         0         0         10
Temp............45        61        66        63
RH..............40        22        17        20
20 FT wind......S 5G7     S 6G12    SW 9G17   SW 8G14
Mix hgt (ft)....600       2700      5400      3500
Transport wind..S 8       SW 10     SW 13     SW 11
Vrate kt-ft/1K..4         27        70        38
Ventrate Cat....POOR      FAIR      GOOD      FAIR

.THURSDAY NIGHT...

Sky/weather.........Mostly cloudy. Slight chance of rain showers
                    in the evening then chance overnight.
Chance of pcpn......10 percent increasing to 50 percent overnight.
Min temperature.....41-44 degrees.
Max humidity........61-64 percent.
20-foot winds.......South winds 5 to 10 mph.
Mixing height.......600 ft AGL decreasing to 400 ft AGL in the late
                    evening and overnight.
Transport winds.....Southwest 9 to 11 knots.
Smoke dispersal.....Fair (25500 knot-ft) decreasing to poor (4000
                    knot-ft).

TIME (MST)      6 PM      9 PM      MIDNGT    3 AM
Sky (%).........78        76        68        71
Weather cov.....                    S CHC     S CHC
Weather type....NONE      NONE      RNSHWR    RNSHWR
Tstm cov........
CWR.............10        10        20        20
Temp............60        51        48        47
RH..............24        38        42        49
20 FT wind......SW 7G13   SW 6G10   S 6G10    S 6G10
Mix hgt (ft)....2400      400       600       600
Transport wind..SW 10     SW 10     SW 11     SW 10
Vrate kt-ft/1K..26        4         7         6
Ventrate Cat....FAIR      POOR      POOR      POOR

.FRIDAY...

Sky/weather.........Mostly cloudy. Showers likely.
Chance of pcpn......70 percent.
Max temperature.....58-61 degrees.
Min humidity........48-51 percent.
20-foot winds.......Southwest winds 8 to 13 mph. Gusts up to 25 mph
                    in the late morning and afternoon.
Mixing height.......1900 ft AGL increasing to 5500 ft AGL.
Transport winds.....Southwest 8 to 16 knots.
Smoke dispersal.....Poor (5000 knot-ft) early in the morning
                    increasing to very good (81700 knot-ft) in the
                    afternoon.

TIME (MST)      6 AM      9 AM      NOON      3 PM
Sky (%).........74        75        75        74
Weather cov.....CHANCE    CHANCE    LIKELY    LIKELY
Weather type....RNSHWR    RNSHWR    RNSHWR    RNSHWR
Tstm cov........
CWR.............50        50        60        60
Temp............46        49        57        56
RH..............59        59        49        49
20 FT wind......S 6G10    S 8G13    SW 12G19  SW 12G20
Mix hgt (ft)....600       1300      3600      5500
Transport wind..S 9       S 11      SW 16     SW 15
Vrate kt-ft/1K..5         14        57        82
Ventrate Cat....POOR      MRGL      GOOD      VYGD

$$
Forecaster...FIRE WX FORECASTER
Requested by...Wes Gutweiler
Type of request...PRESCRIBED
.TAG 2600079.2/TWC
.DELDT 01/20/26
.FormatterVersion 2.0.0
.EMAIL wesley.gutweiler@usda.gov

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