761
FNUS75 KBYZ 152145
FWSBYZ

Spot Forecast for East Fork...BLM
National Weather Service Billings MT
345 PM MDT Sun Jun 15 2025

Forecast is based on forecast start time of 1500 MDT on June 15.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

Main weather concern will be the likely chance of severe
thunderstorms late this afternoon into the evening. There is potential
for winds 75 mph+, large hail and a small chance for a tornado. Heavy
rain will be likely with any thunderstorm that forms. The timing on these
look to begin between 1700-1800 MDT with an additional round possible
later into the evening around 2300-2400 MDT. Variable winds
gusting 20-30 mph are expected following any thunderstorms that
move through. The chance for scattered severe thunderstorms returns late
tomorrow afternoon, with large hail and strong winds being the main
threats.

.REST OF TODAY...

Sky/weather.........Partly sunny. Chance of showers and
                    thunderstorms. Some thunderstorms may be severe
                    with damaging winds and large hail.
CWR.................9 percent.
Chance of lightning.34 percent.
Max temperature.....83-87.
Min humidity........37-41 percent.
Wind (20 ft)........
 Slope/valley.......East winds 5 to 6 mph. Gusty and erratic
                    winds expected near thunderstorms.
 Ridgetop...........South around 10 mph.
Mixing height.......4000 ft AGL in the afternoon.
Transport winds.....Northeast around 10 mph.

.TONIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy.
                    Showers and thunderstorms likely in the
                    evening. Some thunderstorms may
                    be severe with damaging winds and large hail.
CWR.................62 percent.
Chance of lightning.57 percent.
Min temperature.....54-58.
Max humidity........93-97 percent.
Wind (20 ft)........
 Slope/valley.......South winds transitioning to northwest overnight
at 5 to 6 mph. Gusty and erratic winds
                    expected near thunderstorms.
 Ridgetop...........Southwest around 15 mph.
Mixing height.......Decreasing to 300 ft AGL overnight.
Transport winds.....Southeast transitioning north around 14 mph.

.MONDAY...

CWR.................15 percent.
Chance of lightning.30 percent.
Max temperature.....73-77.
Min humidity........45-49 percent.
Wind (20 ft)........
 Slope/valley.......North winds 5 to 6 mph. Gusty and erratic winds
                    expected near thunderstorms.
 Ridgetop...........Southwest transitioning northeast around 15 mph.
Mixing height.......Increasing to 4400 ft AGL in the afternoon.
Transport winds.....Northeast around 8 mph.
Sky/weather.........Partly sunny. Chance of showers and
                    thunderstorms in the afternoon. Some
                    thunderstorms may be severe.

$$
Forecaster...Stetzer
Requested by...Don Birch
Type of request...WILDFIRE
.TAG 2516009.0/BYZ
.DELDT 06/15/25
.FormatterVersion 2.0.0
.EMAIL dbirch@blm.gov