121
FNUS75 KTFX 232135
FWSTFX

Spot Forecast for Jericho Mountain...USDA Helena NF
National Weather Service Great Falls MT
335 PM MDT Mon Jun 23 2025

Forecast is based on forecast start time of 0700 MDT on June 24.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

Weak southwesterly flow aloft will set up over the Northern
Rockies for the next few days. Other than some afternoon clouds
and a slight chance for an isolated shower or thunderstorm, drier
conditions and warming temperatures are generally expected.
However, shower and thunderstorm activity and the threat for
lightning and localized gusty winds does increase for the second
half of the week.

.TUESDAY...

Sky/weather.........Mostly sunny (20-40 percent).
CWR.................Less than 10 percent.
Chance of thunder...Less than 10 percent.
Max temperature.....62-67.
Min humidity........25-32 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds around 5 to 10 mph becoming
                    northeast in the afternoon.
 Ridgetop...........Southwest around 5 to 10 mph.
Mixing height.......8500 ft AGL.

.TUESDAY NIGHT...

Sky/weather.........Mostly clear (20-30 percent). Slight chance of
                    rain showers in the evening.
CWR.................Less than 10 percent.
Chance of thunder...10 percent.
Min temperature.....45-50.
Max humidity........50-55 percent.
Wind (20 ft)........
 Slope/valley.......East winds around 5 mph becoming south overnight.
 Ridgetop...........South around 5 mph.
Mixing height.......0 ft AGL.

.WEDNESDAY...

Sky/weather.........Sunny (20-30 percent).
CWR.................0 percent.
Chance of thunder...10 percent.
Max temperature.....65-70.
Min humidity........26-31 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds around 5 to 10 mph becoming
                    west in the afternoon.
 Ridgetop...........Southwest around 15 mph.
Mixing height.......9000 ft AGL increasing to 11000 ft AGL in the
                    afternoon.

$$
Forecaster...Greely
Requested by...Eric Trimble
Type of request...WILDFIRE
.TAG 2516517.0/TFX
.DELDT 06/23/25
.FormatterVersion 2.0.0
.EMAIL erictrimble22@gmail.com, tfx.ops@noaa.gov