428
FNUS75 KTWC 292310
FWSTWC

Spot Forecast for Catalina Piles RX...USDA / USFS
National Weather Service Tucson AZ
410 PM MST Wed Jan 29 2025

Forecast is based on ignition time of 1800 MST on January 29.

.DISCUSSION...Tonight, snow showers will continue to move through
the site and then diminishing after 8 pm. Snow accumulations will
generally be another 1 to 2 inches through 8pm. Clouds will start
to break and clear towards sunrise.

Tomorrow, clear skies and cooler temperatures in the morning.
Winds will be westerly with afternoon gusts up to 22 mph. Then a
drying and warming trend will start by Friday and through the
weekend.

.TONIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy. Snow
                    showers likely and slight chance of
                    thunderstorms early in the evening, then chance
                    of snow showers early in the evening.
Chance of pcpn......60 percent decreasing to 10 percent.
Min temperature.....21-24 degrees.
Max humidity........92-95 percent.
20-foot winds.......West winds 6 to 11 mph. Gusty and erratic winds
                    expected near thunderstorms early in the
                    evening.
Mixing height.......100 ft AGL.
Transport winds.....West 6 to 9 knots.

TIME (MST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........78  78  78  78  78  60  60  60  60  60  60  35
Weather cov.....LKY LKY CHC CHC CHC CHC CHC CHC CHC CHC CHC
Weather type....SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
Tstm cov........SCH SCH
CWR.............60  60  40  40  40  40  40  40  40  40  40  10
Temp............23  23  23  22  23  23  23  23  24  23  23  23
RH..............93  86  85  85  81  79  78  77  76  78  79  74
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..8   7   6   6   6   6   6   6   6   5   5   5
20 FT wind gust.13  12  10  10  10  10  8   8   8   8   8   7
Mix hgt (kft)...1.3 0.7 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Transp wind dir.W   W   W   W   W   W   W   W   W   W   W   W
Transp wind spd.9   8   7   6   6   6   6   6   6   7   7   7

.THURSDAY...

Sky/weather.........Sunny.
Chance of pcpn......10 percent.
Max temperature.....37-40 degrees.
Min humidity........38-41 percent.
20-foot winds.......West winds 7 to 12 mph. Gusts up to 21 mph late
                    in the afternoon.
Mixing height.......1900 ft AGL increasing to 3700 ft AGL late in
                    the morning.
Transport winds.....West 8 to 15 knots.

TIME (MST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........33  29  20  19  19  4   9   7   4   2   3   4
Weather cov.....
Weather type....
Tstm cov........
CWR.............10  10  10  10  10  0   0   0   0   0   0   0
Temp............23  25  26  30  32  34  36  36  37  38  36  33
RH..............78  70  64  53  49  45  46  44  42  39  41  45
20 FT wind dir..W   W   W   W   W   W   W   W   W   W   W   W
20 FT wind spd..5   5   5   5   6   6   6   8   8   9   9   10
20 FT wind gust.7   6   6   8   10  12  14  14  17  17  17  17
Mix hgt (kft)...0.1 0.1 0.1 1.0 1.9 2.8 3.1 3.4 3.7 3.3 2.8 2.4
Transp wind dir.W   W   W   NW  NW  NW  NW  W   W   W   W   W
Transp wind spd.8   8   8   10  12  14  15  15  15  14  14  11

.THURSDAY NIGHT...

Sky/weather.........Clear.
Chance of pcpn......0 percent.
Min temperature.....26-29 degrees.
Max humidity........50-53 percent.
20-foot winds.......West winds 7 to 12 mph with gusts to around 17
                    mph shifting to the north 5 to 9 mph after 3
                    am.
Mixing height.......100 ft AGL.
Transport winds.....Northwest 5 to 11 knots shifting to the east
                    around 5 knots early in the morning.

TIME (MST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........2   3   4   4   3   1   1   1   1   2   4   5
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............31  30  30  31  31  31  31  32  32  32  32  31
RH..............51  50  51  46  44  43  41  39  37  37  36  36
20 FT wind dir..W   W   W   W   W   W   W   W   W   NW  N   N
20 FT wind spd..10  9   7   6   6   5   5   5   5   5   5   5
20 FT wind gust.17  14  11  10  8   7   6   6   6   6   7   7
Mix hgt (kft)...1.6 0.9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Transp wind dir.W   W   W   W   W   NW  NW  NW  NW  N   NE  E
Transp wind spd.11  10  8   7   6   5   5   5   5   5   5   5

.FRIDAY...

Sky/weather.........Sunny.
Chance of pcpn......0 percent.
Max temperature.....49-52 degrees.
Min humidity........23-26 percent.
20-foot winds.......Northeast winds 5 to 10 mph shifting to the
                    east late in the morning, then shifting to the
                    north 5 to 7 mph in the afternoon.
Mixing height.......1800 ft AGL increasing to 2500 ft AGL in the
                    afternoon.
Transport winds.....East 4 to 6 knots.

TIME (MST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........7   11  13  10  5   1   2   2   2   2   2   2
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............31  32  33  37  42  46  49  50  50  49  47  45
RH..............35  33  32  29  26  25  24  25  25  27  29  30
20 FT wind dir..NE  NE  E   E   E   E   E   N   N   N   N   NW
20 FT wind spd..5   6   6   6   6   5   4   3   3   3   4   5
20 FT wind gust.7   8   8   8   10  10  10  8   8   8   8   8
Mix hgt (kft)...0.1 0.1 0.1 0.5 1.0 1.4 1.8 2.1 2.5 2.1 1.6 1.2
Transp wind dir.E   E   E   E   E   E   E   E   E   E   E   E
Transp wind spd.5   6   6   6   6   5   5   4   4   4   5   5

$$
Forecaster...STRONGMAN
Requested by...Megan Smedley
Type of request...PRESCRIBED
.TAG 2501794.0/TWC
.DELDT 01/29/25
.FormatterVersion 2.0.0
.EMAIL ashleigh.dantonio@usda.gov

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