Wyoming Fire Weather Zone 140

.DISCUSSION...
...YELLOWSTONE NP AND TETON DISPATCH AREAS (INCLUDES FIRE WEATHER ZONES 140...414...415...AND 416)... HIGH TEMPERATURES A COUPLE OF DEGREES WARMER TODAY...RANGING FROM THE LOWER 60S TO NEAR 80 FOR MOST LOCATIONS WITH MINIMUM RELATIVE HUMIDITY LEVELS RANGING FROM THE MID 20S TO AROUND 40 PERCENT. WINDS WILL TEND LIGHT AND VARIABLE TO 10 MPH. SLOW MOVING OR STATIONARY ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS TODAY...WITH MODERATE RAINFALL...ICE PELLETS...AND FREQUENT LIGHTNING THE MOST LIKELY THREATS. FRIDAY..WARMER AGAIN...BUT MINIMUM RH VALUES WILL REMAIN ABOUT THE SAME AS TODAY. THERE WILL BE ANOTHER CHANCE FOR ISOLATED TO WIDELY SCATTERED LATE DAY SHOWERS OR THUNDERSTORMS ACROSS THE MOUNTAINS. ...RAWLINS DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 277...278... AND 279)... HIGH TEMPERATURES WILL BE SOME 10 TO 15 DEGREES WARMER THAN YESTERDAY...WITH HIGHS MOSTLY RANGING INTO MID AND UPPER 70S FOR MOST LOCATIONS. WINDS WILL BE LIGHT EASTERLY TO LIGHT AND VARIABLE ...AT GENERALLY LESS THAN 10 MPH. MINIMUM RELATIVE HUMIDITY VALUES WILL FALL INTO THE UPPER TEENS TO LOWER 20S (PERCENT). AN ISOLATED SHOWER OR THUNDERSTORM WILL BE POSSIBLE OVER THE HILLS OF ZONES 277 AND 279 LATE IN THE DAY. FRIDAY...EXPECT EXPECT TEMPERATURES TO WARM ANOTHER 2 TO 5 DEGREES OVER THOSE TODAY...HOWEVER MINIMUM RH VALUES WILL REMAIN ABOUT THE SAME AND WINDS WILL TEND TO THE LIGHTER SIDE ONCE AGAIN. PRECIPITATION CHANCES WILL INCREASE...WITH ISOLATED CHANCES EVERYWHERE BY LATE AFTERNOON FRIDAY. ...CODY DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 275...276...282...283...285...286...287...288...AND 289)... HIGH TEMPERATURES WARMER BY SOME 5 TO 10 DEGREES OVER THOSE YESTERDAY...RANGING FROM THE MID 60S TO MID 80S FOR MOST LOCATIONS WITH MINIMUM RELATIVE HUMIDITY LEVELS RANGING FROM THE MID TEENS IN THE BIG HORN BASIN...TO MID 30S (PERCENT) IN THE MOUNTAINS. WINDS WILL TEND LIGHT AND VARIABLE AT GENERALLY LESS THAN 10 MPH. THERE WILL BE A CHANCE FOR ISOLATED TO WIDELY SCATTERED SHOWERS AND THUNDERSTORMS THIS AFTERNOON AND EVENING...MAINLY OVER THE MOUNTAINS. THESE SHOWERS AND STORMS WILL BE VERY SLOW MOVING AT BEST AND MAY PRODUCE MODERATE RAINFALL...ICE PELLETS AND FREQUENT LIGHTNING. FRIDAY...EXPECT TEMPERATURES TO CONTINUE WARMING...WITH HIGHS RANGING FROM THE UPPER 60S IN THE MOUNTAINS TO THE LOWER 90S IN THE BIG HORN BASIN. HOWEVER...MINIMUM RH VALUES WILL REMAIN ABOUT THE SAME AS TODAY AND WINDS WILL ALSO REMAIN ON THE LIGHTER SIDE FOR ANOTHER DAY. ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL ONE AGAIN BE POSSIBLE MAINLY OVER THE MOUNTAINS AND ZONE 289 LATER IN THE DAY...WITH LITTLE IF ANY CHANCE FOR PRECIPITATION ELSEWHERE. ...CASPER DISPATCH AREA (INCLUDES FIRE WEATHER ZONES 280...281...285...289...AND 300)... HIGH TEMPERATURES WILL BE WARMER TODAY WITH HIGHS MOSTLY RANGING INTO THE LOWER 60S TO NEAR 70 IN THE MOUNTAINS TO THE MID 80S AT LOWER ELEVATIONS. WINDS WILL TEND VARIABLE AT 10 MPH OR LESS FOR MOST LOCATIONS. MINIMUM RELATIVE HUMIDITY VALUES WILL RANGE FROM THE MID AND UPPER TEENS (PERCENT) AT LOWER ELEVATIONS TO THE LOWER 30S IN THE MOUNTAINS. ISOLATED TO WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE MAIN OVER THE BIG HORN MOUNTAINS THIS AFTERNOON...WITH SHOWERS LINGERING OVERNIGHT IN PLACES. FRIDAY...TEMPERATURES WILL WARM ANOTHER FEW DEGREES OVER THOSE TODAY. HOWEVER...MINIMUM RH VALUES WILL RISE SLIGHTLY. THERE WILL BE SLIGHTLY BETTER CHANCES FOR ISOLATED TO SCATTERED SHOWERS AND STORMS...ESPECIALLY IN THE REGION`S MOUNTAINS AND ALONE NEAR A WEAK FRONTAL BOUNDARY IN ZONES 280 AND 289. ...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 215 PM MDT THU JUL 31 2014 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS UNTIL 2400. CHANCE OF PRECIPITATION 20 PERCENT. MIN TEMPERATURE.....42-48. 24 HR TREND......4 DEGREES WARMER. MAX HUMIDITY........79-85 PERCENT. 24 HR TREND......2 PERCENT DRIER. HUMIDITY RECOVERY...EXCELLENT. 20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH. LAL.................3 UNTIL 2400...THEN 1. CHC OF WETTING RAIN.10 PERCENT UNTIL 2400...THEN ZERO PERCENT. TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH. MIXING HEIGHT.......5000-7500 FT AGL UNTIL 2400...THEN 2500-4500 FT AGL. SMOKE DISPERSAL.....POOR TO FAIR (32000-52000 KNOT-FT). HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FRIDAY... SKY/WEATHER.........MOSTLY SUNNY UNTIL 1200...THEN PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS AFTER 1200. CHANCE OF PRECIPITATION 20 PERCENT. MAX TEMPERATURE.....71-78. 24 HR TREND......3 DEGREES WARMER. MIN HUMIDITY........28-34 PERCENT. 24 HR TREND......2 PERCENT DRIER. 20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH UNTIL 1200...THEN NORTHEAST AROUND 10 MPH AND GUSTY. RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH. LAL.................1 UNTIL 1200...THEN 3. CHC OF WETTING RAIN.ZERO PERCENT UNTIL 1200...THEN 10 PERCENT. TRANSPORT WINDS.....EAST 10 TO 15 MPH. MIXING HEIGHT.......3500-6000 FT AGL UNTIL 1200...THEN 7000-9500 FT AGL. SMOKE DISPERSAL.....GOOD (64000-84000 KNOT-FT). HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FRIDAY NIGHT... SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS UNTIL 2400. CHANCE OF PRECIPITATION 20 PERCENT. MIN TEMPERATURE.....44-49. 24 HR TREND......2 DEGREES WARMER. MAX HUMIDITY........78-84 PERCENT. 24 HR TREND......2 PERCENT WETTER. HUMIDITY RECOVERY...EXCELLENT. 20-FOOT WINDS.......SOUTHEAST WINDS AROUND 10 MPH UNTIL 0300...THEN DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP TO 15 MPH. RIDGE TOP WINDS.....SOUTHEAST 10 TO 15 MPH. LAL.................3 UNTIL 2400...THEN 1. CHC OF WETTING RAIN.ZERO PERCENT. TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH. MIXING HEIGHT.......6500-9000 FT AGL UNTIL 2400...THEN 2000-4500 FT AGL. SMOKE DISPERSAL.....GOOD TO VERY GOOD (82000-102000 KNOT-FT) UNTIL 2400...THEN POOR TO FAIR (28000-48000 KNOT-FT). HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .SATURDAY... SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS AFTER 1200. CHANCE OF PRECIPITATION 20 PERCENT. MAX TEMPERATURE.....71-78. 24 HR TREND......UNCHANGED. MIN HUMIDITY........27-33 PERCENT. 24 HR TREND......1 PERCENT DRIER. 20-FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 10 MPH. RIDGE TOP WINDS.....SOUTH AROUND 10 MPH UNTIL 1200...THEN WEST. LAL.................1 UNTIL 1200...THEN 3. CHC OF WETTING RAIN.LESS THAN 5 PERCENT. TRANSPORT WINDS.....SOUTH AROUND 10 MPH UNTIL 1200...THEN WEST. MIXING HEIGHT.......2000-4500 FT AGL UNTIL 1200...THEN 6500-9000 FT AGL. SMOKE DISPERSAL.....POOR TO FAIR (36000-56000 KNOT-FT). HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .FORECAST DAYS 3 THROUGH 7...... .SATURDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS IN THE EVENING...THEN ISOLATED SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 40S. WINDS GENERALLY LESS THAN 10 MPH. .SUNDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH. .MONDAY THROUGH TUESDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS 42 TO 47. HIGHS 66 TO 71. WINDS GENERALLY LESS THAN 10 MPH. .WEDNESDAY THROUGH THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S.
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