FNUS75 KBYZ 291645
FWSBYZ

SPOT FORECAST FOR RESERVOIR FIRE...MEDICINE WHEEL RD
NATIONAL WEATHER SERVICE BILLINGS MT
1045 AM MDT THU SEP 29 2011

FORECAST IS BASED ON REQUEST TIME OF 1004 MDT ON SEPTEMBER 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

SUNNY AND DRY CONDITIONS WILL PREVAIL AT THE BURN SITE THROUGH
SATURDAY. TODAY WILL BE COOLER THAN WEDNESDAY WITH HIGHER
RELATIVE HUMIDITIES. WEST WINDS WILL MIX DOWN IN THE AFTERNOON
WITH OCCASIONAL GUSTS TO 25 MPH. WARMER AND DRIER AIR WILL MOVE
INTO THE AREA TONIGHT LIMITING RH RECOVERIES AND KEEPING
TEMPERATURES FROM COOLING MUCH. DOWN SLOPE/VALLEY WINDS WILL BE
PREDOMINANT HOWEVER OCCASIONAL WESTERLY GUSTS WILL BE POSSIBLE
WITH GUSTY RIDGETOP WINDS. FRIDAY WILL BE DRIER AND WARMER. WINDS
WILL BE STRONGEST IN THE MORNING...WEAKENING AND BECOMING SLOPE
DOMINANT IN THE AFTERNOON. RECORD SETTING HEAT AND DRY CONDITIONS
ARE EXPECTED SATURDAY WITH STRONGER WESTERLY WINDS ABOVE 7000
FEET WHICH MAY CREATE CRITICAL FIRE CONDITIONS.

APPRECIATE THE FEEDBACK THIS MORNING. IF THE FORECAST IS NOT
WORKING OUT FOR ANY REASON PLEASE SEND FEEDBACK ASAP AND WE WILL
RE-WORK THE FORECAST AND DETERMINE WHAT IS CAUSING THE PROBLEM.
THE FIRE LOCATION IS NOT PRONE TO EASTERLY WINDS...OUTSIDE OF
NORMAL DOWNSLOPE/VALLEY WINDS AT NIGHT...UNLESS THERE IS A STRONG
COLD FRONT THAT PUSHES WINDS OVER THE TOP OF THE BIG HORNS SO
THAT SHOULD BE A RARE EVENT. WE ARE HERE TO HELP YOU SO PLEASE CALL
US IMMEDIATELY WITH ANY CONCERNS. THANKS AGAIN FOR THE FEEDBACK!
CHAMBERS

.REST OF TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....52-57.
MIN HUMIDITY........27-32 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST IN THE MORNING 6 TO 12 MPH BECOMING
                    WEST 8 TO 14 MPH...GUSTS TO 25 MPH IN THE
                    AFTERNOON.
 RIDGETOP...........NORTHWEST 15 TO 25 MPH.
MIXING HEIGHT.......5600 FT AGL.
MIXING WINDS........NORTHWEST 10 TO 20 MPH.

.TONIGHT...

SKY/WEATHER.........CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....39-45.
MAX HUMIDITY........46-51 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWN SLOPE/VALLEY 4 TO 8 MPH...OCCASIONAL WESTERLY
                    GUST TO 18 MPH.
 RIDGETOP...........NORTHWEST 15 TO 25 MPH.
MIXING HEIGHT.......1000 FT AGL.
MIXING WINDS........WEST 10 TO 15 MPH.

.FRIDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....60-65.
MIN HUMIDITY........16-21 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 8 TO 15 MPH IN THE MORNING...BECOMING
                    UP SLOPE/VALLEY 6 TO 12 MPH IN THE AFTERNOON.
 RIDGETOP...........WEST 10 TO 20 MPH...DECREASING TO 6 TO 12 MPH IN THE
                    AFTERNOON.
MIXING HEIGHT.......6600 FT AGL.
MIXING WINDS........WEST 5 TO 15 MPH.

$$
FORECASTER...CHAMBERS
REQUESTED BY...TODD LEGLER
TYPE OF REQUEST...WILDFIRE
.TAG 20110929.RESER.02/BYZ