071
FNAK79 PAFG 301435
FWSAFG

Spot Forecast for Bison Rx...Division Of Forestry
National Weather Service Fairbanks AK
635 AM AKDT Tue Apr 30 2024

Forecast is based on ignition time of 0700 AKDT on April 30.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
A weak thermal trough over the fire area will persist into Wed.
This will cause light south winds through the AK Range
passes into Wed with winds increasing on Thu.

RH values should rise slightly today compared to Mon, and rise more
on Wed. Will see RH values fall to 20-30% on Thu, but drier conditions
are possible Fri through the weekend. Expect isolated light showers
this afternoon through Wed afternoon. Showers will diminish late Wed night
and conditions will be mainly dry on Thu through Sat.

Light south winds are expected to increase slightly on Thu.
Expect moderate southerly Chinook winds to develop across the Alaska Range
on Fri and continue into the weekend. This Chinook is expected to cause
south winds 15 mph gusting to 30 mph over the fire area Fri into Sat,
and possibly into Sun. This could cause low RH values and near Red Flag
conditions at the fire area Fri into Sat, and possibly into Sun.

.REST OF TODAY...

Sky/weather.........Mostly cloudy (70-80 percent). Isolated snow
                    showers in the morning. Isolated rain showers
                    through the day.
CWR.................2 percent.
LAL.................1.
Max temperature.....Around 53.
Min humidity........22 percent.
Wind (20 ft)........Light winds becoming west around 5 mph in the
                    afternoon.
Ridgetop wind.......South 5 mph.
Mixing height.......600 ft AGL increasing to 5200 ft AGL in the
                    afternoon.
Transport winds.....West around 7 mph.
Inversion burnoff...11 AM.

.TONIGHT...

Sky/weather.........Mostly cloudy (70-80 percent). Isolated rain
                    showers through the night. Isolated snow
                    showers overnight.
CWR.................2 percent.
LAL.................1.
Min temperature.....Around 33.
Max humidity........77 percent.
Wind (20 ft)........Southwest winds 5 to 6 mph.
Ridgetop wind.......Southwest 5 mph.
Mixing height.......3300 ft AGL decreasing to 400 ft AGL after midnight.
Transport winds.....Southwest around 5 mph.
Inversion setup.....10 PM.

.WEDNESDAY...

Sky/weather.........Partly sunny (65-75 percent). Isolated rain
                    showers.
CWR.................1 percent.
LAL.................1.
Max temperature.....Around 56.
Min humidity........19 percent.
Wind (20 ft)........Light winds becoming southeast 5 to 8 mph in
                    the afternoon.
Ridgetop wind.......Southeast 5 mph
Mixing height.......600 ft AGL increasing to 5200 ft AGL in the
                    afternoon.
Transport winds.....Southwest around 5 mph.
Inversion burnoff...Noon.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...
Mostly cloudy. Isolated showers and snow showers. Lows in the mid
30s. Highs in the upper 50s. South winds 5 to 15 mph.
.FRIDAY...
Mostly cloudy. Lows in the mid 30s. Highs around 60.
Southeast winds 15 mph with gusts to 25 mph.
.SATURDAY...
Mostly cloudy. Lows in the lower 30s. Highs around 60.
Southeast winds 15 mph with gusts to 25 mph. Southeast

$$
Forecaster...BRADER
Requested by...Mike Goyette
Type of request...PRESCRIBED
.TAG 2412642.0/AFG
.DELDT 04/30/24
.FormatterVersion 2.0.0