397
FNUS75 KBYZ 271051
FWSBYZ

Spot Forecast for Horsethief Piles...BLM
National Weather Service Billings MT
351 AM MST Thu Feb 27 2025

Forecast is based on ignition time of 0800 MST on February 27.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office if you have questions
or concerns with this forecast.

.DISCUSSION...

Winds will be breezy today with gusts up to 30 mph. Winds will be
much stronger just off the surface. Winds will shift between 1
and 3 PM from southwest to westerly. Winds at the surface and
aloft will decrease after midnight. Humidity recoveries will be
good tonight, and no precipitation is expected over the next 48 hours.

.TODAY...

Sky/weather.........Sunny then becoming mostly sunny.
CWR.................0 percent.
Max temperature.....52-56.
Min humidity........37-41 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 14 to 18 mph with gusts to
                    around 30 mph.
 Ridgetop...........West winds 32 to 37 mph.
Mixing height.......400 ft AGL early in the morning increasing to
                    1600 ft AGL in the afternoon.
Transport winds.....West 25 to 30 mph.

TIME (MST)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........36  28  23  11  38  53  32  31  33  46
Weather cov.....
Weather type....
Tstm cov........
Temp............33  39  44  47  50  52  53  54  52  51
RH..............63  56  49  44  43  39  37  37  38  40
20 FT wind dir..SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..9   14  14  14  15  16  18  17  17  16
20 FT wind gust.16  18  19  24  28  30  30  28  23  22

.TONIGHT...

Sky/weather.........Partly cloudy.
CWR.................0 percent.
Min temperature.....27-31.
Max humidity........67-71 percent.
Wind (20 ft)........
 Slope/valley.......West winds 12 to 15 mph with gusts to around 25
                    mph, decreasing to 6 to 9 mph after midnight.
 Ridgetop...........West winds 32 to 37 mph becoming northwest
20 to 25 mph after midnight.
Mixing height.......1600 ft AGL early in the evening decreasing to
                    300 ft AGL overnight.
Transport winds.....West winds 25 to 30 mph becoming northwest
18 to 22 mph after midnight.

TIME (MST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........40  51  38  39  27  28  41  29  31  22  38  38
Weather cov.....
Weather type....
Tstm cov........
Temp............48  45  43  42  41  40  39  37  36  34  32  31
RH..............43  45  48  49  50  53  56  57  62  65  66  68
20 FT wind dir..SW  W   W   W   W   W   W   W   W   W   NW  NW
20 FT wind spd..15  14  13  11  9   7   6   6   6   6   6   6
20 FT wind gust.25  22  20  17  16  14  12  10  8   7   6   6

.FRIDAY...

Sky/weather.........Mostly sunny.
CWR.................0 percent.
Max temperature.....50-54.
Min humidity........44-48 percent.
Wind (20 ft)........
 Slope/valley.......Light, variable winds.
 Ridgetop...........West winds 5 to 10 mph.
Mixing height.......300 ft AGL early in the morning increasing to
                    2200 ft AGL in the afternoon.
Transport winds.....West winds 5 to 10 mph.

TIME (MST)      6 AM      9 AM      NOON      3 PM
Sky (%).........40        42        42        40
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
Temp............31        38        48        52
RH..............67        59        50        45
20 FT wind......NW 2G6    W 2G5     SW 2G6    W 2G6

$$
Forecaster...Vertz
Requested by...Robert Griffin
Type of request...PRESCRIBED
.TAG 2504043.0/BYZ
.DELDT 02/27/25
.FormatterVersion 2.0.0
.EMAIL rmgriffin@blm.gov,dday@blm.gov