Wyoming Fire Weather Zone 140

.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... YELLOWSTONE NATIONAL PARK- INCLUDING...LAKE...MAMMOTH...OLD FAITHFUL 218 PM MDT FRI AUG 22 2014 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY. ISOLATED THUNDERSTORMS UNTIL 2400. NUMEROUS RAIN SHOWERS. SCATTERED SNOW SHOWERS AND ISOLATED THUNDERSTORMS AFTER 2400. LITTLE OR NO SNOW ACCUMULATION. SOME THUNDERSTORMS MAY PRODUCE GUSTY WINDS...SMALL HAIL AND HEAVY RAINFALL UNTIL 2400. SOME THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL AFTER 2400. CHANCE OF PRECIPITATION 70 PERCENT. MIN TEMPERATURE.....38-43. 24 HR TREND......3 DEGREES COOLER. MAX HUMIDITY........93-99 PERCENT. 24 HR TREND......1 PERCENT DRIER. HUMIDITY RECOVERY...EXCELLENT. 20-FOOT WINDS.......SOUTH WINDS AROUND 10 MPH WITH GUSTS TO AROUND 15 MPH. RIDGE TOP WINDS.....SOUTH AROUND 15 MPH. LAL.................2. CHC OF WETTING RAIN.55 PERCENT UNTIL 2400...THEN 45 PERCENT. TRANSPORT WINDS.....SOUTH 15 TO 20 MPH. MIXING HEIGHT.......3000-5000 FT AGL. SMOKE DISPERSAL.....FAIR TO GOOD (50000-70000 KNOT-FT). HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SATURDAY... SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED SNOW SHOWERS UNTIL 1200. SCATTERED RAIN SHOWERS. ISOLATED THUNDERSTORMS AFTER 1200. SOME THUNDERSTORMS MAY PRODUCE GUSTY WINDS AND SMALL HAIL AFTER 1200. CHANCE OF PRECIPITATION 50 PERCENT. MAX TEMPERATURE.....51-56. 24 HR TREND......UNCHANGED. MIN HUMIDITY........69-75 PERCENT. 24 HR TREND......12 PERCENT WETTER. 20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH HIGHER GUSTS. RIDGE TOP WINDS.....WEST 15 TO 20 MPH. LAL.................1 UNTIL 1200...THEN 2. CHC OF WETTING RAIN.30 PERCENT UNTIL 1200...THEN 40 PERCENT. TRANSPORT WINDS.....WEST 20 TO 25 MPH. MIXING HEIGHT.......3000-5500 FT AGL. SMOKE DISPERSAL.....GOOD (66000-86000 KNOT-FT). HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SATURDAY NIGHT... SKY/WEATHER.........CLOUDY. SCATTERED RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. PATCHY FOG AFTER 2400. CHANCE OF PRECIPITATION 50 PERCENT. MIN TEMPERATURE.....32-38. 24 HR TREND......5 DEGREES COOLER. MAX HUMIDITY........92-98 PERCENT. 24 HR TREND......1 PERCENT DRIER. HUMIDITY RECOVERY...EXCELLENT. 20-FOOT WINDS.......NORTHWEST WINDS AROUND 10 MPH UNTIL 0300...THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15 MPH. RIDGE TOP WINDS.....NORTHWEST AROUND 15 MPH. LAL.................2. CHC OF WETTING RAIN.40 PERCENT UNTIL 2400...THEN 30 PERCENT. TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH. MIXING HEIGHT.......3000-5500 FT AGL UNTIL 2400...THEN 2500-3000 FT AGL. SMOKE DISPERSAL.....FAIR TO GOOD (40000-60000 KNOT-FT). HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SUNDAY... SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. CHANCE OF PRECIPITATION 50 PERCENT. MAX TEMPERATURE.....51-56. 24 HR TREND......UNCHANGED. MIN HUMIDITY........55-61 PERCENT. 24 HR TREND......14 PERCENT DRIER. 20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200...THEN WEST AROUND 10 MPH. GUSTS UP TO 15 MPH. RIDGE TOP WINDS.....WEST AROUND 10 MPH UNTIL 0900...THEN EAST UNTIL 1200...THEN WEST. LAL.................2. CHC OF WETTING RAIN.30 PERCENT. TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH UNTIL 0900...THEN WEST 15 TO 20 MPH. MIXING HEIGHT.......3000-5500 FT AGL UNTIL 1200...THEN 5500-7000 FT AGL. SMOKE DISPERSAL.....FAIR TO GOOD (56000-76000 KNOT-FT). HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 7...... .SUNDAY NIGHT...MOSTLY CLOUDY WITH SLIGHT CHANCE OF THUNDERSTORMS AND ISOLATED SHOWERS. LOWS IN THE MID 30S. WINDS GENERALLY LESS THAN 10 MPH. .MONDAY...MOSTLY CLOUDY WITH SCATTERED SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE MID 50S. WINDS GENERALLY LESS THAN 10 MPH. .TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS AROUND 60. WINDS GENERALLY LESS THAN 10 MPH. .WEDNESDAY...MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE MID 60S. WINDS GENERALLY LESS THAN 10 MPH. .THURSDAY...PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S. .FRIDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 60S.
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