163
FNUS75 KTFX 291034
FWSTFX

Spot Forecast for Sandbar 2...USFS
National Weather Service Great Falls MT
434 AM MDT Fri Aug 29 2025

Forecast is based on forecast start time of 0600 MDT on August 29.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Expect another day of cooler temperatures and higher humidity.
Additionally, a passing showers/thunderstorms are possible, mostly
this afternoon/early evening. It turns drier on Saturday, with
warmer and low humidity conditions expected for Sunday and
Monday.

.TODAY...

Sky/weather.........Mostly cloudy (65-75 percent). Patchy fog early
                    in the morning. Slight chance of rain showers
                    in the morning, then rain showers likely and
                    chance of thunderstorms in the afternoon.
CWR.................5 percent increasing to 55 percent in the
                    afternoon.
Chance of thunder...50 percent.
Max temperature.....64-69.
Min humidity........Near 55 percent.
Wind (20 ft)........
 Slope/valley.......Variable light winds around 5 mph. Gusty and
                    erratic winds expected near thunderstorms in
                    the afternoon.
 Ridgetop...........West 10 to 15 mph shifting to the northwest 5
                    to 10 mph late in the morning.
Mixing height.......2500 ft AGL.
Transport winds.....West around 10 mph.

TIME (MDT)      6 AM         10 AM        2 PM
Sky (%).........75           42           70
Weather cov.....PATCHY                    LIKELY
Weather type....FOG          NONE         RNSHWR
Tstm cov........                          CHANCE
CWR.............10           10           60
Chc of thdr (%).0            10           40
Temp............53           57           64
RH..............97           83           65
20 FT wind......W 5G10       W 5G15       W 5G15
Ridgetop wind...W 15         W 10         NW 5
Mix hgt (ft)....500          1500         2500
Transport wind..W 10         W 10         W 10

.TONIGHT...

Sky/weather.........Mostly cloudy (55-65 percent) then becoming
                    partly cloudy (30-40 percent). Chance of
                    showers and thunderstorms in the evening.
CWR.................10 percent decreasing to 0 percent overnight.
Chance of thunder...40 percent.
Min temperature.....47-52.
Max humidity........Above 85 percent.
Wind (20 ft)........
 Slope/valley.......Downslope around 5 mph. Gusty and erratic winds
                    expected near thunderstorms early in the
                    evening.
 Ridgetop...........Northwest 5 to 10 mph increasing to west 15 to
                    20 mph.
Mixing height.......200 ft AGL.
Transport winds.....North 5 to 10 mph shifting to the west
                    overnight.

TIME (MDT)      6 PM         10 PM        2 AM
Sky (%).........64           57           41
Weather cov.....CHANCE
Weather type....RNSHWR       NONE         NONE
Tstm cov........CHANCE
CWR.............10           10           0
Chc of thdr (%).30           0            0
Temp............62           54           52
RH..............70           86           85
20 FT wind......N 5G15       W 0G5        W 0G5
Ridgetop wind...NW 5         NW 15        W 10
Mix hgt (ft)....1500         BLW200       BLW200
Transport wind..N 10         N 5          W 5

.SATURDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....71-76.
Min humidity........27-32 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming upslope around 5 mph in the
                    late morning and afternoon.
 Ridgetop...........West 15 to 25 mph.
Mixing height.......5000 ft AGL.
Transport winds.....West 5 to 10 mph increasing to around 15 mph in
                    the afternoon.

TIME (MDT)      6 AM         10 AM        2 PM
Sky (%).........31           5            5
Weather cov.....
Weather type....NONE         NONE         NONE
Tstm cov........
CWR.............0            0            0
Chc of thdr (%).0            0            0
Temp............50           60           71
RH..............86           69           40
20 FT wind......W 0G5        W 5G10       W 5G15
Ridgetop wind...W 25         W 20         W 15
Mix hgt (ft)....500          1500         5000
Transport wind..W 5          W 10         W 15

$$
Forecaster...Brusda
Requested by...Hannah Pinkerton
Type of request...WILDFIRE
.TAG 2520921.0/TFX
.DELDT 08/29/25
.FormatterVersion 2.0.0
.EMAIL hannah.pinkerton@usda.gov