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000
FNUS76 KOTX 180022
FWSOTX

Spot Forecast for Grizz 39/40/41...USDA
National Weather Service Spokane WA
522 PM PDT Wed Apr 17 2024

Forecast is based on ignition time of 1600 PDT on April 17.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

...PLEASE SUBMIT AN UPDATED SPOT WEATHER FORECAST BEFORE YOUR BURN...

A backdoor upper level disturbance pushing across the region out of
Canada will result in scattered showers on Thursday. Showers expected
with cumulus cloud development late in the morning into the
afternoon. Showers will decrease by late afternoon and early evening
with an influx of drier air. Little in the way of accumulating
precipitation with up a few hundredths expected. Northeast winds will
increase on Friday with much drier conditions and RHs in the lower
20 percent. Chilly overnight temperatures with frost likely.

.WEDNESDAY TONIGHT...

Sky/weather.........Partly cloudy. A 30 percent chance for a mix
                    of rain and snow pellets through 1900 PDT this
                    evening. Precipitation amounts will be light
                    of up to 0.02 inches.
CWR.................5 percent.
LAL.................1.
Min temperature.....27-30.
Max humidity........65-70 percent.
Wind (20 ft)........Downslope/Downvalley or northeast winds
                    4 to 6 mph.
Mixing height.......Near surface.
Transport winds.....Northeast 4 to 6 mph.
Haines Index........3 Very Low.

.THURSDAY...

Sky/weather.........Mostly sunny in the morning becoming partly
                    cloudy with developing cumulus clouds after
                    1100 PDT. A 30 percent chance of a mix of
                    rain and snow pellet showers in the afternoon.
                    Total precipitation accumulation of up to
                    0.02 inches possible.
CWR.................5 percent.
LAL.................1.
Max temperature.....Valley bottom...49.
                    At 3300 feet...46.
Min humidity........31-33 percent.
Wind (20 ft)........Northeast 4 to 6 mph in the morning to early
                    afternoon becoming north after 1400 PDT.
Mixing height.......Inversion lifting around 1100 PDT mixing
                    height increasing to 5000 ft AGL between
                    1400 and 1700 PDT.
Transport winds.....Northeast 5 to 7 mph through early afternoon
                    becoming north 7 to 10 mph after 1400 PDT.
Haines Index........3 Very Low.

.THURSDAY NIGHT...

Sky/weather.........Partly cloudy in the evening with a 10
                    percent chance of decaying showers then
                    mostly clear.
CWR.................0 percent.
LAL.................1.
Min temperature.....26-29.
Max humidity........58-64 percent.
Wind (20 ft)........North-Northeast winds 5 to 7 mph in the evening
                    becoming east-northeast overnight.
Mixing height.......4000 ft AGl in the evening decreasing to 500 ft
                    AGL after 1900 PDT.
Transport winds.....Northeast 7 to 9 mph.
Haines Index........3 Very Low.

.FRIDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
LAL.................1.
Max temperature.....Valley bottom...52.
                    At 3300 feet...49.
Min humidity........22-24 percent.
Wind (20 ft)........East winds 7 to 10 mph.
Mixing height.......Increasing to 6000 ft AGL in the afternoon.
Transport winds.....East 10 to 12 mph.

$$
Forecaster...SVH
Requested by...Bradley Fredrickson
Type of request...PRESCRIBED
.TAG 2411281.0/OTX
.DELDT 04/17/24
.FormatterVersion 2.0.0
.EMAIL benjamin.proffitt@usda.gov,bradley.fredrickson@usda.gov