217 
FNUS75 KBYZ 081247
FWSBYZ

SPOT FORECAST FOR SOUTH FORK SOUTH RX...BIGHORN NATIONAL FOREST
NATIONAL WEATHER SERVICE BILLINGS MT
647 AM MDT MON SEP 8 2014

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON SEPTEMBER 08. 
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

HOT AND DRY FOR MOST OF THE DAY WITH OCCASIONALLY GUSTY WESTERLY
WINDS. RH VALUES SHOULD DROP INTO THE TEENS THIS AFTERNOON.
ISOLATED SHOWERS AND THUNDERSTORMS POSSIBLE AFTER 3 PM...LASTING
INTO THE EVENING HOURS. MARGINAL RH RECOVERIES EXPECTED TONIGHT
AHEAD OF A COLD FRONT THAT ARRIVES AROUND SUNRISE TOMORROW. CLOUDS
WILL INCREASE THROUGH THE DAY TUESDAY BEHIND THE FRONT WITH
SCATTERED SHOWERS AND THUNDERSTORMS EXPECTED IN THE AFTERNOON. RH
VALUES WILL BE CONSIDERABLY HIGHER TUESDAY WITH COOLER
TEMPERATURES. GOOD WETTING RAIN CHANCES AND POSSIBLE ACCUMULATING
SNOW TUESDAY NIGHT INTO THURSDAY. CHAMBERS

.TODAY...

SKY/WEATHER.........SUNNY. ISOLATED SHOWERS AND THUNDERSTORMS IN 
                    THE AFTERNOON...AFTER 3 PM. 
CWR.................10 PERCENT. 
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL. 
MAX TEMPERATURE.....65-70. 
MIN HUMIDITY........16-21 PERCENT. 
WIND (20 FT)........ 
 SLOPE/VALLEY.......WEST WINDS 8 TO 16 MPH...OCCASIONAL GUSTS TO
                    25 MPH IN THE AFTERNOON. GUSTY AND ERRATIC 
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE 
                    AFTERNOON. 
 RIDGETOP...........WEST 15 TO 25 MPH. 
MIXING HEIGHT.......11300 FT AGL. 
MIXING WINDS........WEST 15 TO 25 MPH. 
HAINES INDEX........5. 

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND 
                    THUNDERSTORMS IN THE EVENING. 
CWR.................15 PERCENT. 
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL. 
MIN TEMPERATURE.....48-53. 
MAX HUMIDITY........50-55 PERCENT. 
WIND (20 FT)........ 
 SLOPE/VALLEY.......SOUTHWEST WINDS 6 TO 12 MPH. GUSTY AND ERRATIC 
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE 
                    EVENING. 
 RIDGETOP...........SOUTHWEST 15 TO 25 MPH. 
MIXING HEIGHT.......1000 FT AGL. 
MIXING WINDS........SOUTHWEST 10 TO 20 MPH. 
HAINES INDEX........3. 

.TUESDAY...

SKY/WEATHER.........BECOMING MOSTLY CLOUDY WITH SCATTERED RAIN
                    SHOWERS AND ISOLATED THUNDERSTORMS. 
CWR.................20 PERCENT. 
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL. 
MAX TEMPERATURE.....55-60. 
MIN HUMIDITY........34-39 PERCENT. 
WIND (20 FT)........ 
 SLOPE/VALLEY.......NORTHWEST WINDS 5 TO 15 MPH. GUSTY AND ERRATIC 
                    WINDS EXPECTED NEAR THUNDERSTORMS. 
 RIDGETOP...........NORTHWEST 5 TO 15 MPH. 
MIXING HEIGHT.......4000 FT AGL. 
MIXING WINDS........WEST 10 TO 20 MPH. 
HAINES INDEX........3. 

$$
FORECASTER...CHAMBERS
REQUESTED BY...CURTIS RASMUSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20140908.SOUTH.01/BYZ