Lake Recreational Safety Forecasts Experimental

*****Experimental*****

The graphical and text forecasts on this page are experimental. The wind and wave forecasts are derived directly from model data with no forecaster oversight. Other elements such as chance of precipitation, sky, and temperatures are pulled from the gridded forecast issued by the Great Falls forecast office.

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Canyon Ferry Reservoir

Holter Reservoir

Hauser Reservoir and Lake Helena

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FXUS45 KTFX 202303
RECTFX

Recreation Forecast for Central MT Lakes
National Weather Service Great Falls MT
503 PM MDT Mon May 20 2019

Note: The experimental wave height forecasts are representative of
the mid lake waters and downwind shores. Wave heights may be
significantly less on upwind shores.

Forecast For Canyon Ferry Reservoir

.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. A 20 percent chance of rain. Lows around 40 . Variable
winds up to 10 mph. Waves up to one foot.
.TUESDAY...Mostly cloudy with a 50 percent chance of rain. Highs
around 50 . Variable winds up to 10 mph becoming northeast around
15 mph in the afternoon. Waves up to one foot.
.TUESDAY NIGHT...Rain likely. Lows around 40 . East winds around
15 mph shifting to the north after midnight. Chance of rain
70 percent. Waves up to one foot.

$$

Forecast For Upper and Lower Holter Reservoir

.TONIGHT...Mostly cloudy then becoming partly cloudy after
midnight then becoming mostly cloudy. A 20 percent chance of
rain. Patchy fog in the late evening and overnight. Lows in the
upper 30s. Variable winds up to 10 mph. Waves up to one foot.
.TUESDAY...Cloudy. Patchy fog in the morning. A chance of rain in
the morning, then rain in the afternoon. Highs around 50 .
Variable winds up to 10 mph becoming north around 15 mph in the
afternoon. Chance of rain 80 percent. Waves up to one foot.
.TUESDAY NIGHT...Rain. Lows around 40 . North winds around
15 mph. Chance of rain 90 percent. Waves up to one foot.

$$

Forecast For Hauser Reservoir and Lake Helena

.TONIGHT...Mostly cloudy in the evening then becoming partly
cloudy. A 20 percent chance of rain. Patchy fog after midnight.
Lows in the upper 30s. Variable winds up to 10 mph. Waves up to
one foot.
.TUESDAY...Mostly cloudy. A chance of rain in the morning, then
rain likely in the afternoon. Highs in the lower 50s. Variable
winds up to 10 mph. Gusts up to 25 mph in the afternoon. Chance
of rain 70 percent. Waves up to one foot.
.TUESDAY NIGHT...Rain. Lows around 40 . Variable winds up to
10 mph. Chance of rain 80 percent. Waves up to one foot.

$$

Click the above graphics for more information on boating safety.