Wyoming Fire Weather Zone 278

...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR MUCH
OF CENTRAL WYOMING ... ...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT SATURDAY FOR ZONE 279... .DISCUSSION... ...YELLOWSTONE NP AND TETON DISPATCH AREAS (INCLUDES FIRE WEATHER ZONES 140...414...415...AND 416)... INCREASING HIGH PRESSURE OVER THE DISPATCH AREA WILL BE FOUND THROUGH SATURDAY. WIND SHOULD GENERALLY BE LIGHT...WITH A SLIGHT INCREASE DURING THE AFTERNOON HOURS. OVERALL...DRY CONDITIONS ARE EXPECTED TO REMAIN THROUGH SUNDAY NIGHT. THE DISPATCH AREA IS STILL LISTED AS NON CRITICAL AS FAR AS FUEL STATUS...WHICH HELPS TO ELIMINATE MOST FIRE WEATHER CONCERNS THROUGH THE WEEKEND. SOME LOCATIONS WILL SEE DRY HUMIDITY IN THE LOW TEENS...BUT WIND IS ALSO EXPECTED TO BE LIGHT...AGAIN REMOVING MOST FIRE WEATHER THREAT. ...RAWLINS DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 277...278... AND 279)... CRITICAL FIRE WEATHER BEHAVIOR WILL REMAIN PRESENT THROUGH THE EVENING HOURS TONIGHT. WIND WILL LULL OVER NIGHT WITH HUMIDITY ALSO HAVING ITS NORMAL DIURNAL RECOVERY. BUILDING HIGH PRESSURE WILL BE PRESENT ON SATURDAY. HOWEVER...GUSTY WIND WILL AGAIN BE POSSIBLE...ESPECIALLY ACROSS ZONE 279. THE RETURNING COMBINATION OF DRY FUELS...GUSTY WIND...LOW HUMIDITY...AND WARM TEMPERATURES WILL ALLOW FOR THE CONTINUATION OF RED FLAG CONDITIONS THROUGH EARLY SATURDAY EVENING. THE REMAINDER OF THE DISPATCH AREA IS NOT LISTED AS HAVING CRITICALLY DRY FUELS...REMOVING THE SIGNIFICANT THREAT FOR FIRE WEATHER BEHAVIOR. ...CODY DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 275...276... 282...283...285...286...287...288...AND 289)... CRITICAL FIRE WEATHER BEHAVIOR WILL REMAIN PRESENT FOR THE SOUTHERN ZONES THROUGH THE EARLY EVENING HOURS TODAY. BUILDING HIGH PRESSURE WILL BE FOUND OVERNIGHT...HELPING TO BRING DIMINISHED WIND OVER THE DISPATCH AREA. WIND IS EXPECTED TO REMAIN BELOW CRITICAL THRESHOLDS ON SATURDAY...THOUGH WARM AND DRY CONDITIONS WILL REMAIN ACROSS MUCH OF THE AREA. ...CASPER DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 280...281... 285...289...AND 300)... A FEW SHOWERS AND THUNDERSTORMS WILL REMAIN POSSIBLE THROUGH THE EARLY EVENING HOURS TONIGHT...WITH LIGHTNING AND GUSTY WIND BEING THE MAIN THREATS. OTHERWISE...CRITICAL FIRE WEATHER BEHAVIOR WILL REMAIN PRESENT FOR THE SOUTHERN ZONES THROUGH THE EARLY EVENING HOURS. BUILDING HIGH PRESSURE WILL BE FOUND OVERNIGHT...HELPING TO BRING DIMINISHED WIND OVER THE DISPATCH AREA. WIND IS EXPECTED TO REMAIN BELOW CRITICAL THRESHOLDS ON SATURDAY...THOUGH WARM AND DRY CONDITIONS WILL REMAIN ACROSS MUCH OF THE AREA. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... UPPER GREEN RIVER BASIN/ROCK SPRINGS BLM- 243 PM MDT FRI JUL 25 2014 .TONIGHT... SKY/WEATHER.........CLEAR. MIN TEMPERATURE.....43-51. 24 HR TREND......2 DEGREES WARMER. MAX HUMIDITY........50-56 PERCENT. 24 HR TREND......3 PERCENT DRIER. HUMIDITY RECOVERY...MODERATE. 20-FOOT WINDS.......WEST WINDS AROUND 20 MPH WITH GUSTS TO AROUND 25 MPH UNTIL 2100...THEN NORTHWEST AROUND 10 MPH WITH GUSTS TO AROUND 15 MPH UNTIL 0300...THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH. RIDGE TOP WINDS.....WEST AROUND 25 MPH UNTIL 2100...THEN NORTH 10 TO 15 MPH. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. TRANSPORT WINDS.....WEST AROUND 30 MPH UNTIL 2100...THEN NORTH 10 TO 15 MPH. MIXING HEIGHT.......8000-10500 FT AGL UNTIL 2400...THEN 2500-5000 FT AGL. SMOKE DISPERSAL.....EXCELLENT (178000-198000 KNOT-FT) UNTIL 2400...THEN POOR TO FAIR (30000-50000 KNOT-FT). HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SATURDAY... SKY/WEATHER.........SUNNY. MAX TEMPERATURE.....79-86. 24 HR TREND......UNCHANGED. MIN HUMIDITY........6-12 PERCENT. 24 HR TREND......2 PERCENT DRIER. 20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 0900...THEN NORTHWEST 10 TO 15 MPH WITH HIGHER GUSTS. RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH UNTIL 1200...THEN WEST AROUND 20 MPH. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH UNTIL 1200...THEN WEST 20 TO 25 MPH. MIXING HEIGHT.......2500-5000 FT AGL UNTIL 1200...THEN 7000-9500 FT AGL. SMOKE DISPERSAL.....POOR TO FAIR (36000-56000 KNOT-FT) UNTIL 1200...THEN VERY GOOD TO EXCELLENT (138000-158000 KNOT-FT). HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SATURDAY NIGHT... SKY/WEATHER.........CLEAR. MIN TEMPERATURE.....43-51. 24 HR TREND......UNCHANGED. MAX HUMIDITY........49-55 PERCENT. 24 HR TREND......2 PERCENT DRIER. HUMIDITY RECOVERY...MODERATE. 20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH AND GUSTY UNTIL 2400...THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH UNTIL 0300...THEN NORTHEAST AROUND 10 MPH. RIDGE TOP WINDS.....NORTH 10 TO 15 MPH. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH UNTIL 2400...THEN NORTHEAST 10 TO 15 MPH. MIXING HEIGHT.......5000-7500 FT AGL UNTIL 2400...THEN 500-1000 FT AGL. SMOKE DISPERSAL.....VERY GOOD (106000-126000 KNOT-FT) UNTIL 2400...THEN POOR (6000-10000 KNOT-FT). HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SUNDAY... SKY/WEATHER.........MOSTLY SUNNY. MAX TEMPERATURE.....82-87. 24 HR TREND......2 DEGREES WARMER. MIN HUMIDITY........8-14 PERCENT. 24 HR TREND......2 PERCENT WETTER. 20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH UNTIL 0900...THEN SOUTHEAST UNTIL 1500...THEN NORTHWEST. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH UNTIL 0900...THEN SOUTHEAST UNTIL 1200...THEN WEST. MIXING HEIGHT.......1500-4000 FT AGL UNTIL 1200...THEN 7000-9500 FT AGL. SMOKE DISPERSAL.....POOR (16000-36000 KNOT-FT) UNTIL 1200...THEN GOOD (66000-86000 KNOT-FT). HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 7...... .SUNDAY NIGHT...PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND 10 MPH. .MONDAY...MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 80S. NORTHEAST WINDS AROUND 10 MPH. .TUESDAY THROUGH WEDNESDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS AROUND 50. HIGHS 73 TO 78. EAST WINDS AROUND 10 MPH. .THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS AROUND 50. HIGHS IN THE MID 70S. .FRIDAY...MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 70S.
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