Spot Forecast
Issued by NWS Great Falls, MT

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FNUS75 KTFX 152045
FWSTFX

Spot Forecast for Benton Lake Unit 1...USFWS
National Weather Service Great Falls MT
245 PM MDT Mon Apr 15 2024

Forecast is based on ignition time of 0600 MDT on April 16.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

Initially southwest winds become westerly midday Tuesday and
finally northwesterly in the evening behind a cold front. Although
cooler than previous days, the dew point temperature will also
fall Tuesday, allowing minimum relative humidity to fall into the
20s. Precipitation Tuesday evening and overnight along and behind
the front may start off as rain initially, but quickly transition
to snow as colder temperatures work in.

.TUESDAY...

Sky/weather.........Mostly cloudy (65-75 percent) Slight chance of rain and snow after 1700 hrs.
CWR.................Less than 5 percent.
LAL.................1.
Max temperature.....51-56.
Min humidity........22-27 percent.
Wind (20 ft)........
 Slope/valley.......Breezy. Southwest winds 10 to 15 mph increasing
                    to west around 20 mph in the afternoon.
Mixing height.......9000 ft AGL.
Transport winds.....West around 25 mph.
Haines Index........3 or very low potential for large plume dominated
                    fire growth.

.TUESDAY NIGHT...

Sky/weather.........Mostly cloudy (70-80 percent). Chance of snow
                    and rain in the evening, then snow likely
                    overnight.
CWR.................10 percent.
LAL.................1.
Min temperature.....25-30.
Max humidity........70-75 percent.
Wind (20 ft)........
 Slope/valley.......Northwest winds 15 to 20 mph.
Mixing height.......2500 ft AGL.
Transport winds.....Northwest around 25 mph.
Haines Index........

$$
Forecaster...McDowell
Requested by...Kevin Beck
Type of request...PRESCRIBED
.TAG 2410937.0/TFX
.DELDT 04/15/24
.FormatterVersion 2.0.0
.EMAIL Kevin_Beck@fws.gov, tfx.ops@noaa.gov


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