Wyoming Fire Weather Zone 279

.DISCUSSION...
...YELLOWSTONE NP AND TETON DISPATCH AREAS (INCLUDES FIRE WEATHER ZONES 140...414...415...AND 416)... HIGH TEMPERATURES COOLER TODAY...RANGING FROM THE MID 40S TO THE LOWER 60S FOR MOST LOCATIONS WITH MINIMUM RELATIVE HUMIDITY LEVELS RANGING INTO THE MID 40S TO THE MID 60S (PERCENT). WINDS WILL TEND SOUTH TO SOUTHWEST AT 10 TO 15 MPH...WITH HIGHER GUSTS AT RIDGE TOP LEVEL. SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS EXPECTED THROUGH THE DAY AND OVERNIGHT WITH A GOOD CHANCE FOR WETTING RAINS AS A VIGOROUS UPPER LEVEL DISTURBANCE COMBINES WITH INCREASED MOISTURE FROM THE PACIFIC. SATURDAY...HIGH TEMPERATURES SIMILAR TO TODAY...WITH MINIMUM RH VALUES RISING 5 TO 15 PERCENT. PRECIPITATION CHANCES CONTINUE HIGH THROUGH THE DAY...AS MOISTURE CONTINUES TO FLOW INTO THE REGION FROM THE PACIFIC. ...RAWLINS DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 277...278... AND 279)... TEMPERATURES A FEW DEGREES WARMER OVER THOSE OF YESTERDAY...WITH HIGHS RANGING INTO THE UPPER 60S TO MID 70S FOR MOST LOCATIONS. WINDS WILL TEND SOUTH TO SOUTHEAST AT AROUND 10 MPH. MINIMUM RELATIVE HUMIDITY VALUES WILL ONLY FALL INTO THE UPPER 20S TO MID 40S (PERCENT) AT LOWER ELEVATIONS. INCREASING CHANCES FOR SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS CONTINUE AS A VIGOROUS UPPER LEVEL DISTURBANCE COMBINES WITH INCREASED MOISTURE. SATURDAY...HIGH TEMPERATURES WILL FALL BY SOME 10 DEGREES OVER THOSE OF TODAY...WHILE MINIMUM RH VALUES RISE 10 TO 15 PERCENT. PRECIPITATION CHANCES WILL CONTINUE RELATIVELY HIGH THROUGH THE DAY...AS MOISTURE CONTINUES TO FLOW INTO THE REGION FROM THE GREAT BASIN....ALSO KEEPING RH VALUES RELATIVELY HIGH. ...CODY DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 275...276...282...283...285...286...287...288...AND 289)... HIGH TEMPERATURES COOLER TODAY... RANGING FROM THE MID 50S IN THE MOUNTAINS TO THE LOWER AND MID 70S OVER THE LOWER ELEVATIONS. MINIMUM RELATIVE HUMIDITY LEVELS WILL ONLY DROP INTO THE 30S TO LOWER 60S FOR MOST LOCATIONS. WINDS WILL VARIABLE 5 TO 15 MPH. CHANCES WILL INCREASE THROUGH THE DAY FOR SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS THIS AFTERNOON...EVENING AND OVERNIGHT AS A VIGOROUS UPPER LEVEL DISTURBANCE COMBINES WITH INCREASED MOISTURE FROM THE GREAT BASIN. SATURDAY...HIGH TEMPERATURES SIMILAR TO TODAY WITH RH LEVELS RISING 10 TO 20 PERCENT...AS MOISTURE CONTINUES TO FLOW INTO THE REGION...KEEPING PRECIPITATION CHANCES AND RH VALUES RELATIVELY HIGH. ...CASPER DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 280...281...285...289...AND 300)... HIGH TEMPERATURES WILL REMAIN SIMILAR TO THOSE OF YESTERDAY...RANGING INTO THE MID 50S IN THE NORTHERN MOUNTAINS TO THE MID AND UPPER 70S AT LOWER ELEVATIONS. WINDS WILL TEND SOUTH TO SOUTHEAST AT 5 TO 10 MPH FOR MOST LOCATIONS. MINIMUM RELATIVE HUMIDITY VALUES WILL DROP INTO THE MID 20S AT LOW ELEVATIONS...WITH 40 TO 80 PERCENT FOUND IN THE MOUNTAINS. ISOLATED TO WIDELY SCATTERED SHOWERS OR THUNDERSTORMS THIS AFTERNOON AND EVENING AS A VIGOROUS UPPER LEVEL DISTURBANCE COMBINES WITH INCREASED MOISTURE FROM THE MONSOON. SATURDAY...TEMPERATURES DROP SOME 5 TO 10 DEGREES OVER THOSE OF TODAY. MINIMUM RH VALUES WILL RISE ACROSS ALL ZONES 10 TO 15 PERCENT AS MOISTURE CONTINUES TO FLOW INTO THE REGION...KEEPING PRECIPITATION CHANCES AND RH VALUES RELATIVELY HIGH. ...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS... ...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT... SWEETWATER COUNTY/ROCK SPRINGS BLM/FLAMING GORGE NRA- 218 PM MDT FRI AUG 22 2014 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL. CHANCE OF PRECIPITATION 50 PERCENT. MIN TEMPERATURE.....46-51. 24 HR TREND......2 DEGREES COOLER. MAX HUMIDITY........88-94 PERCENT. 24 HR TREND......3 PERCENT WETTER. HUMIDITY RECOVERY...EXCELLENT. 20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH AND GUSTY UNTIL 0300...THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH. RIDGE TOP WINDS.....WEST 15 TO 20 MPH UNTIL 0300...THEN SOUTHWEST AROUND 10 MPH. LAL.................2. CHC OF WETTING RAIN.40 PERCENT UNTIL 2400...THEN 30 PERCENT. TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH. MIXING HEIGHT.......5500-8000 FT AGL UNTIL 2400...THEN 2500-4000 FT AGL. SMOKE DISPERSAL.....VERY GOOD (104000-124000 KNOT-FT) UNTIL 2400...THEN POOR TO FAIR (38000-58000 KNOT-FT). HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SATURDAY... SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS. ISOLATED THUNDERSTORMS AFTER 1200. CHANCE OF PRECIPITATION 50 PERCENT. MAX TEMPERATURE.....62-67. 24 HR TREND......11 DEGREES COOLER. MIN HUMIDITY........38-44 PERCENT. 24 HR TREND......10 PERCENT WETTER. 20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH UNTIL 1500...THEN AROUND 20 MPH WITH GUSTS TO AROUND 25 MPH. RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH UNTIL 1200...THEN WEST AROUND 25 MPH. LAL.................1 UNTIL 1200...THEN 2. CHC OF WETTING RAIN.40 PERCENT. TRANSPORT WINDS.....WEST 20 TO 25 MPH UNTIL 1500...THEN AROUND 30 MPH. MIXING HEIGHT.......3000-5500 FT AGL UNTIL 1200...THEN 6500-9000 FT AGL. SMOKE DISPERSAL.....GOOD (68000-88000 KNOT-FT) UNTIL 1200...THEN VERY GOOD TO EXCELLENT (144000-164000 KNOT-FT). HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SATURDAY NIGHT... SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS AND ISOLATED RAIN SHOWERS UNTIL 2400. PATCHY FOG AFTER 2400. CHANCE OF PRECIPITATION 20 PERCENT. MIN TEMPERATURE.....42-47. 24 HR TREND......5 DEGREES COOLER. MAX HUMIDITY........81-87 PERCENT. 24 HR TREND......6 PERCENT DRIER. HUMIDITY RECOVERY...EXCELLENT. 20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 25 MPH UNTIL 2100. RIDGE TOP WINDS.....WEST 20 TO 25 MPH UNTIL 0300...THEN SOUTHWEST AROUND 15 MPH. LAL.................2 UNTIL 2400...THEN 1. CHC OF WETTING RAIN.15 PERCENT UNTIL 2400...THEN ZERO PERCENT. TRANSPORT WINDS.....WEST 20 TO 25 MPH. MIXING HEIGHT.......4000-6500 FT AGL UNTIL 2400...THEN 500-1500 FT AGL. SMOKE DISPERSAL.....GOOD TO VERY GOOD (98000-118000 KNOT-FT) UNTIL 2400...THEN POOR (6000-26000 KNOT-FT). HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SUNDAY... SKY/WEATHER.........PARTLY CLOUDY. MAX TEMPERATURE.....65-70. 24 HR TREND......3 DEGREES WARMER. MIN HUMIDITY........25-31 PERCENT. 24 HR TREND......11 PERCENT DRIER. 20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH. GUSTS UP TO 20 MPH UNTIL 1500...THEN 25 MPH. RIDGE TOP WINDS.....WEST 15 TO 20 MPH. LAL.................1. CHC OF WETTING RAIN.ZERO PERCENT. TRANSPORT WINDS.....WEST AROUND 20 MPH UNTIL 0900...THEN 25 TO 30 MPH. MIXING HEIGHT.......3000-5500 FT AGL UNTIL 1200...THEN 7500-10000 FT AGL. SMOKE DISPERSAL.....GOOD TO VERY GOOD (80000-100000 KNOT-FT) UNTIL 1200...THEN EXCELLENT (158000-178000 KNOT-FT). HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 7...... .SUNDAY NIGHT...PARTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS AROUND 10 MPH. .MONDAY...PARTLY CLOUDY WITH SCATTERED SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS AROUND 10 MPH. .TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH. .WEDNESDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH. .THURSDAY THROUGH FRIDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE MID 70S.
View Complete Fire Weather Zones

Back to Fire Weather Page

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.