281 
FNUS75 KGJT 131020
FWSGJT

Spot Forecast for Snell Rock RX...USFS
National Weather Service Grand Junction CO
420 AM MDT Thu May 13 2021

Forecast is based on ignition time of 0900 MDT on May 13. 
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Above normal temperatures the next few days will lead 
to deep mixing which will tap into stronger winds aloft. This in turn
will bring some afternoon gusts around 25 mph near the time of peak 
heating. Far outside chance of thunderstorm or shower near the burn
site on Friday though outflow winds from storms will need to be 
monitored.  

.REST OF TODAY...

Sky/weather.........Partly cloudy (30-40%). 
Max temperature.....57-62 F. 
Min humidity........14-19%. 
Wind (20 ft)........West winds 5 to 10 mph by 1000 increasing 10 to
                    15 mph after 1300. Gusts 20 to 25 mph after 1400.  
Smoke dispersal.....Excellent by peak heating.  
Haines Index........5 or moderate. 
LAL.................1. 
Mixing height.......11100 ft AGL by peak heating. 
Transport winds.....West 22 mph by peak heating. 

.TONIGHT...

Sky/weather.........Partly cloudy (40-50%). 
Min temperature.....41-46 F. 
Max humidity........40-45%. 
Wind (20 ft)........South 5 mph overnight. 
Smoke dispersal.....Poor (3000 knot-ft) overnight. 
Haines Index........5 or moderate. 
LAL.................1. 
Mixing height.......9100 ft AGL decreasing to 800 ft AGL overnight. 
Transport winds.....West 20 mph becoming southwest 10 mph 
                    overnight. 

.FRIDAY...

Sky/weather.........Mostly to partly cloudy (50-70%). Isolated showers
                    and thunderstorms in the afternoon. 
Max temperature.....60-65 F. 
Min humidity........19-24%. 
Wind (20 ft)........West winds 8 to 13 mph developing by 1000...with 
                    gusts of 17 to 25 mph after 1400. Gusty and erratic 
                    winds expected near thunderstorms. 
Smoke dispersal.....Excellent by peak heating. 
Haines Index........5 or moderate. 
LAL.................1 until 1500, then 2. 
Mixing height.......11300 ft AGL by peak heating. 
Transport winds.....Southwest 22 mph after 1200. 

$$
Forecaster...Dennis Phillips
Requested by...White River National Forest
Type of request...PRESCRIBED
.TAG 2112337.0/GJT
.DELDT 05/13/21
.FormatterVersion 1.0.26
.EMAIL mswhite@blm.gov