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000
FNUS75 KTFX 181023
FWSTFX

Spot Forecast for Unit 11B Hand Piles...USFS
National Weather Service Great Falls MT
423 AM MDT Thu Apr 18 2024

Forecast is based on ignition time of 0800 MDT on April 18.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

A cool northwesterly flow aloft will keep temperatures cooler than
normal through Friday, as afternoon humidity remains above 50 percent.
A few snow showers may also develop over the mountains each afternoon
and move over the fire area. Today will be the more favored day for
shower development with a slightly higher chance for wetting
precipitation and the potential for erratic wind gusts near any
showers. Temperatures will warm back closer to normal through the
weekend into Monday, but a disturbance could bring periods of
additional showers and gusty winds.


.REST OF TODAY...

Sky/weather.........Partly sunny (60-70 percent). Scattered snow
                    showers in the afternoon.
CWR.................20 percent.
LAL.................1.
Max temperature.....27-32.
Min humidity........55-60 percent.
Wind (20 ft)........
 Slope/valley.......Northeast winds up to 10 mph, with gusts up to
                    20 mph possible in the afternoon. Erratic gusts
                    up to 25 mph possible out of any showers.
Mixing height.......4000 ft AGL.
Transport winds.....Northeast around 10 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

.TONIGHT...

Sky/weather.........Mostly cloudy (60-70 percent). Isolated snow
                    showers in the evening.
CWR.................5 percent.
LAL.................1.
Min temperature.....12-17.
Max humidity........70-75 percent.
Wind (20 ft)........
 Slope/valley.......Northeast winds 5 to 10 mph. Erratic gusts up
                    to 20 mph possible out of any showers.
Mixing height.......500 ft AGL.
Transport winds.....Northeast around 10 mph.
Haines Index........

.FRIDAY...

Sky/weather.........Mostly cloudy (70-80 percent). Slight chance of
                    snow showers.
CWR.................5 percent.
LAL.................1.
Max temperature.....25-30.
Min humidity........53-58 percent.
Wind (20 ft)........
 Slope/valley.......Northeast winds 5 to 10 mph.
Mixing height.......4500 ft AGL.
Transport winds.....Northeast around 10 mph.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

$$
Forecaster...Coulston
Requested by...Brian Peterson
Type of request...PRESCRIBED
.TAG 2411274.0/TFX
.DELDT 04/18/24
.FormatterVersion 2.0.0
.EMAIL brian.peterson3@usda.gov, tfx.ops@noaa.gov