551
FNUS75 KBYZ 071009
FWSBYZ

Spot Forecast for Phillips Butte...USFS
National Weather Service Billings MT
409 AM MDT Mon Apr 7 2025

Forecast is based on ignition time of 0800 MDT on April 09.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

On Wednesday, an upper air disturbance will move southeastward
over Montana. The disturbance will bring northwesterly winds that
increase during the morning from 9 mph and gusting to 13 mph, to
15-20 mph and gusting to 30-40 mph. The windy conditions will
continue into the afternoon. The disturbance will also bring a
20-30% chance of rain showers to the site, though the chance of a
wetting rain is less than 5%. Then, upper air high pressure will
move into the area and bring lighter winds and dry conditions
Wednesday night into Thursday.

.WEDNESDAY...

Sky/weather.........Mostly sunny. Slight chance of rain showers
                    early in the morning, then chance of rain
                    showers in the afternoon.
CWR.................0 percent.
Chance of lightning.5 percent.
Max temperature.....54-58.
Min humidity........26-30 percent.
Wind (20 ft)........
 Slope/valley.......West winds 5-10 mph, gusting to 13 mph...becoming
                    northwest 15-20 mph, gusting to 35-40 mph.
 Ridgetop...........West winds 5-10 mph, gusting to 13 mph...becoming
                    northwest 15-20 mph, gusting to 35-40 mph.
Mixing height.......1100 ft AGL early in the morning increasing to
                    10800 ft AGL in the afternoon.
Transport winds.....Northwest 25 mph increasing to 35 mph in the
                    afternoon.

TIME (MDT)      8 AM      11 AM     2 PM      5 PM
Sky (%).........34        31        36        30
Weather cov.....S CHC     S CHC     CHANCE    CHANCE
Weather type....RNSHWR    RNSHWR    RNSHWR    RNSHWR
Tstm cov........
Chc of ltng (%).0         0         0         0
Temp............39        49        55        55
RH..............66        44        30        27
20 FT wind......W 9G13    W 15G30   NW 17G35  NW 19G37

.WEDNESDAY NIGHT...

Sky/weather.........Mostly clear.
CWR.................0 percent.
Chance of lightning.5 percent.
Min temperature.....33-37.
Max humidity........59-63 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 5 to 15 mph. Gusts up to 30 mph
                    in the evening.
 Ridgetop...........Northwest winds 5 to 15 mph. Gusts up to 30 mph
                    in the evening.
Mixing height.......7500 ft AGL early in the evening decreasing to
                    100 ft AGL overnight.
Transport winds.....Northwest 35 mph decreasing to 12 mph early in
                    the evening.

TIME (MDT)      6 PM      9 PM      MIDNGT    3 AM
Sky (%).........31        20        10        6
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
Chc of ltng (%).0         0         0         0
Temp............54        46        42        37
RH..............28        41        51        57
20 FT wind......NW 15G30  NW 10G18  W 8G14    W 8G14

.THURSDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
Chance of lightning.0 percent.
Max temperature.....59-63.
Min humidity........20-24 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 5 to 9 mph. Gusts up to 20 mph
                    early in the afternoon.
 Ridgetop...........Northwest winds 5 to 9 mph. Gusts up to 20 mph
                    early in the afternoon.
Mixing height.......400 ft AGL early in the morning increasing to
                    6500 ft AGL in the afternoon.
Transport winds.....West 12 to 15 mph.

TIME (MDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........4         5         3         3
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
Chc of ltng (%).0         0         0         0
Temp............35        42        53        58
RH..............60        50        31        23
20 FT wind......W 7G13    NW 8G14   NW 9G16   NW 8G14

$$
Forecaster...Setzenfand
Requested by...Spencer King
Type of request...PRESCRIBED
.TAG 2508878.0/BYZ
.DELDT 04/07/25
.FormatterVersion 2.0.0
.EMAIL spencer.king@usda.gov