747 FNUS75 KVEF 252339 FWSVEF Spot Forecast for ROCK...DFFM National Weather Service Las Vegas NV 439 PM PDT Wed Apr 25 2018 Forecast is based on request time of 1700 MST on April 25. If conditions become unrepresentative...or if you have questions or concerns with this forecast...please contact our office at (702) 263-9750. .DISCUSSION...Calm, dry and very warm conditions are expected to continue until Friday, when an incoming low pressure system will enhance southwest winds at the fire site. Wind gusts of 25-35 MPH, minimum RH values below 10 percent, and critical fuels will combine to create critical fire weather conditions over the weekend. .TONIGHT... Sky/weather.........Mostly clear. Min temperature.....48-53. Max humidity........23-28 percent. Winds: 20 ft wind........West winds around 10 mph in the evening becoming variable 2 to 5 mph. 10000 ft wind.....Northwest 8 to 15 mph. CWR (>= 0.10 in)....0 percent. LAL.................1. Mixing height.......4000 ft AGL decreasing to 2000 ft AGL after midnight. Transport winds.....West around 10 knots in the evening becoming light. Haines Index........5. Ventilation.........Excellent decreasing to poor after midnight. .THURSDAY... Sky/weather.........Sunny. Max temperature.....83-88. Min humidity........6-8 percent. Winds: 20 ft wind........Variable 4 to 8 mph becoming southwest around 10 mph in the afternoon. 10000 ft wind.....North 3 to 8 mph shifting to the west in the afternoon. CWR (>= 0.10 in)....0 percent. LAL.................1. Mixing height.......5000 ft AGL increasing to 14000 ft AGL in the afternoon. Transport winds.....Light winds. Haines Index........5. Ventilation.........Poor increasing to excellent in the afternoon. .THURSDAY NIGHT... Sky/weather.........Partly cloudy. Min temperature.....50-55. Max humidity........22-27 percent. Winds: 20 ft wind........Southwest winds around 10 mph in the evening becoming variable 2 to 5 mph. 10000 ft wind.....West 11 to 16 mph becoming north around 3 mph after midnight. CWR (>= 0.10 in)....0 percent. LAL.................1. Mixing height.......3000 ft AGL decreasing to 1000 ft AGL after midnight. Transport winds.....Southwest around 10 knots in the evening becoming light. Haines Index........5. Ventilation.........Excellent decreasing to poor after midnight. $$ Forecaster...Morgan Requested by...IC MIKE LAING Type of request...WILDFIRE .TAG 1807872.0/VEF .EMAIL aidclogistics@dffm.az.gov