637
FNUS75 KTFX 161026
FWSTFX

Spot Forecast for Horse Gulch...USFS
National Weather Service Great Falls MT
426 AM MDT Fri Aug 16 2024

Forecast is based on forecast start time of 0600 MDT on August 16.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

Scattered showers and thunderstorms return this afternoon into this
evening. Erratic gusts could reach 45 mph at times. The chance for
wetting rain is fairly low, but afternoon humidity should mostly
remain above 25 percent, as temperatures stay below normal. Overnight
humidity recovery should be good as skies partially clear. Warmer
and drier conditions are likely on Saturday. Warm temperatures persist
into next week, but with chances for showers and storms each day.
-Coulston

.TODAY...

Sky/weather.........Sunny (10-20 percent) then becoming partly
                    sunny (50-60 percent). Scattered showers and
                    thunderstorms in the afternoon.
CWR.................5 percent.
LAL.................1 until 1200, then 3.
Max temperature.....73-81.
Min humidity........24-29 percent.
Wind (20 ft)........
 Slope/valley.......Variable winds around 5 mph shifting to the
                    southwest at 5 to 10 mph with gusts to 15 mph in
                    the afternoon. Gusty and erratic winds expected
                    near thunderstorms in the afternoon.
 Ridgetop...........Southwest around 10 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent). Haze in the
                    evening. Isolated showers and thunderstorms in
                    the evening.
CWR.................15 percent.
LAL.................2 until 2400, then 1.
Min temperature.....51-56.
Max humidity........74-83 percent.
Wind (20 ft)........
 Slope/valley.......North winds 5 to 10 mph becoming downslope /
                    down drainage 3 to 6 mph overnight. Gusty and
                    erratic winds expected near thunderstorms in
                    the evening.
 Ridgetop...........Southeast around 10 mph.
Haines Index........

.SATURDAY...

Sky/weather.........Sunny (0-10 percent).
CWR.................0 percent.
LAL.................1.
Max temperature.....80-87.
Min humidity........19-24 percent.
Wind (20 ft)........
 Slope/valley.......Variable winds around 5 mph becoming
                    upslope / up drainage 5 to 10 mph in the
                    afternoon.
 Ridgetop...........Southwest around 5 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

.FORECAST DAYS 3 THROUGH 7...
.SUNDAY...
Mostly clear. Slight chance of showers. Lows in the upper 50s.
Highs in the upper 80s. Southeast winds around 5 mph.
.MONDAY...
Partly cloudy. Chance of showers and slight chance of
thunderstorms. Lows in the upper 50s. Highs in the mid 80s.
Southeast winds around 5 mph.
.TUESDAY...
Mostly clear. Slight chance of showers and thunderstorms. Lows in
the mid 50s. Highs in the mid 80s. South winds around 5 mph.
.WEDNESDAY...
Partly cloudy. Lows in the upper 50s. Highs in the mid 80s.
.THURSDAY...
Mostly clear. Lows in the mid 50s. Highs around 80.

$$
Forecaster...Coulston
Requested by...Plans Sec Chief
Type of request...WILDFIRE
.TAG 2418667.67/TFX
.DELDT 08/16/24
.FormatterVersion 2.0.0
.EMAIL william.menning@usda.gov, mthdc@firenet.gov, matthew.sagan@usda.gov, owen.johnson@usda.gov, tfx.ops@noaa.gov