Colorado Fire Weather Zone 218

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FIRE WEATHER PLANNING FORECAST FOR NORTHEAST AND NORTH CENTRAL
COLORADO NATIONAL WEATHER SERVICE DENVER/BOULDER CO 500 AM MST FRI DEC 19 2014 .DISCUSSION...TODAY AND TONIGHT...WEAK WEST TO NORTHWEST FLOW ALOFT WILL CONTINUE OVER COLORADO AS AN UPPER LEVEL RIDGE BUILDS OVER THE REGION. THE AIRMASS WILL BE DRY AND STABLE EXCEPT FOR SOME LOW LEVEL MOISTURE IN THE MOUNTAIN VALLEYS. SURFACE WINDS WILL BE LIGHT DUE TO WEAK PRESSURE GRADIENTS ACROSS THE FORCAST AREA. LONG TERM DISCUSSION...SATURDAY THROUGH TUESDAY...NORTHWESTERLY FLOW ALOFT WITH A WEAK UPPER TROUGH WILL MOVE ACROSS THE FORECAST AREA SATURDAY. NORTH-NORTHWESTERLY FLOW ALOFT WILL INCREASE SATURDAY NIGHT INTO TUESDAY WITH PLENTY OF MOISTURE AND VERY STRONG SURFACE WINDS MAKING FOR A SIGNIFICANT SNOWFALL EVENT IN THE MOUNTAINS SUNDAY THROUGH MONDAY NIGHT. THE PLAINS COULD SEE A CHANCE OF SNOW SUNDAY NIGHT INTO MONDAY. TEMPERATURES WILL BE A BIT ABOVE NORMAL SATURDAY AND SUNDAY...THEN COOL OFF MONDAY AND TUESDAY. ...THUNDERSTORMS IMPLY STRONG GUSTY ERRATIC WINDS... ...ALL SURFACE WINDS ARE 20-FOOT...10-MINUTE AVERAGED WINDS... ...CWR IS CHANCE OF WETTING RAIN - 0.10 INCH OR MORE LIQUID... ...24 HR TRENDS ARE BASED ON AVERAGES OVER THE RESPECTIVE ZONE GROUPS AND MAY NOT MATCH THE ACTUAL FORECAST VALUES SHOWN IN THOSE GROUPS... SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/ GILPIN/CLEAR CREEK/SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET-SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET- INCLUDING BERTHOUD PASS...BRECKENRIDGE...EAST SLOPES MOSQUITO RANGE...EAST SLOPES SOUTHERN GORE RANGE...EISENHOWER TUNNEL... INDIAN PEAKS...KENOSHA MOUNTAINS...MOUNT EVANS...PUMA HILLS... TARRYALL MOUNTAINS...WILLIAMS FORK MOUNTAINS...WINTER PARK... CAMERON PASS...LARAMIE AND MEDICINE BOW MOUNTAINS...RABBIT EARS RANGE...ROCKY MOUNTAIN NATIONAL PARK...WILLOW CREEK PASS 500 AM MST FRI DEC 19 2014 .TODAY... SKY/WEATHER.........MOSTLY CLOUDY(60-65%) UNTIL 0700...THEN PARTLY CLOUDY(35-45%). MAX TEMPERATURE.....20-30. 24 HR TREND......2-4 DEGREES WARMER. MIN HUMIDITY........46-56%. 24 HR TREND......LITTLE CHANGE. 20-FOOT WINDS....... VALLEYS/LWR SLOPES...WEST 9-15 MPH WITH GUSTS TO 25 MPH. RIDGES/UPR SLOPES....WEST 12-22 MPH WITH GUSTS TO 30 MPH. HAINES INDEX........3 VERY LOW. LAL.................1. CWR.................0 PERCENT. 15K FT MSL WINDS....NORTHWEST 15-25 MPH. MIXING HEIGHT.......2500-3500 FT AGL. TRANSPORT WINDS.....WEST 20-25 MPH. SMOKE DISPERSAL.....POOR. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY(40-50%). MIN TEMPERATURE.....6-14. 24 HR TREND......LITTLE CHANGE. MAX HUMIDITY........77-87%. 24 HR TREND......10-15% DRIER. 20-FOOT WINDS....... VALLEYS/LWR SLOPES...WEST 9-15 MPH WITH GUSTS TO 25 MPH. RIDGES/UPR SLOPES....WEST 13-23 MPH WITH GUSTS TO 30 MPH. HAINES INDEX........3 VERY LOW. LAL.................1. CWR.................0 PERCENT. 15K FT MSL WINDS....NORTHWEST 20-30 MPH. MIXING HEIGHT.......1500-2000 FT AGL. TRANSPORT WINDS.....WEST 15-20 MPH. SMOKE DISPERSAL.....POOR. .SATURDAY... SKY/WEATHER.........PARTLY CLOUDY(50-60%) UNTIL 1100...THEN MOSTLY CLOUDY(60-65%). MAX TEMPERATURE.....22-32. 24 HR TREND......LITTLE CHANGE. MIN HUMIDITY........43-53%. 24 HR TREND......2-4% DRIER. 20-FOOT WINDS....... VALLEYS/LWR SLOPES...WEST 8-14 MPH WITH GUSTS TO 25 MPH. RIDGES/UPR SLOPES....WEST 12-18 MPH WITH GUSTS TO 30 MPH. HAINES INDEX........3 VERY LOW. LAL.................1. CWR.................0 PERCENT. 15K FT MSL WINDS....WEST 20-30 MPH. MIXING HEIGHT.......4000-5000 FT AGL. TRANSPORT WINDS.....WEST AROUND 20 MPH. SMOKE DISPERSAL.....POOR UNTIL 1400...THEN FAIR. .SATURDAY NIGHT...CLOUDY. SLIGHT CHANCE OF SNOW. LOWS AROUND 14. WEST WINDS 9-15 MPH. .SUNDAY...BREEZY...CLOUDY. CHANCE OF SNOW. HIGHS AROUND 30. WEST WINDS 15-25 MPH. .MONDAY...BREEZY. SNOW LIKELY. LOWS IN THE MID 20S. HIGHS IN THE UPPER 20S. WEST WINDS 15-25 MPH. .TUESDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SNOW. LOWS AROUND 16. HIGHS IN THE MID 20S. WEST WINDS 13-23 MPH.
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