FNUS75 KBYZ 032235
FWSBYZ

SPOT FORECAST FOR RESERVOIR FIRE...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
435 PM MDT SAT SEP 3 2011

FORECAST IS BASED ON REQUEST TIME OF 1617 MDT ON SEPTEMBER 03.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

DRY AND CLEAR CONDITIONS TONIGHT. WINDS WILL BE LIGHT AND SLOPE
DOMINANT THROUGH SUNDAY. RELATIVE HUMIDITY RECOVERIES WILL BE
AROUND 65 PERCENT TONIGHT. SUNDAY TEMPERATURES WILL BE WARMER AS
A HIGH PRESSURE RIDGE BUILDS IN FROM THE SOUTHWEST. WITH WARMER
TEMPERATURES RELATIVE HUMIDITIES WILL DROP INTO THE 20S SUNDAY
AFTERNOON. MONDAY WILL BE WARMER AND DRIER THAN SUNDAY WITH
RELATIVE HUMIDITIES IN THE UPPER TEENS. A DISTURBANCE WILL BRING
ISOLATED THUNDERSTORM CHANCES FOR THE AFTERNOON AND EVENING HOURS
MONDAY.

EXTENDED PERIOD...RIDGE OF HIGH PRESSURE WILL KEEP TEMPERATURES
ABOVE NORMAL...AND RELATIVE HUMIDITIES IN THE UPPER TEENS TO MID
20S THROUGH THE WEEK. SOME MONSOONAL MOISTURE WILL MOVE INTO THE
AREA FOR ISOLATED THUNDERSTORM CHANCES EACH AFTERNOON AND
EVENING. A RIDGE BREAKING STORM SYSTEM MAY ARRIVE NEXT WEEKEND.
NO STRONG WIND EVENTS OUTSIDE OF THUNDERSTORMS UNTIL POSSIBLY
NEXT WEEKEND. CHAMBERS

.REST OF TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....53-58.
MIN HUMIDITY........33-38 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 4 TO 8 MPH.
 RIDGETOP...........WEST 5 TO 10 MPH.

.TONIGHT...

SKY/WEATHER.........CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....30-35.
MAX HUMIDITY........64-69 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWN SLOPE/VALLEY 4 TO 8 MPH.
 RIDGETOP...........WEST 5 TO 15 MPH.

.SUNDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....58-63.
MIN HUMIDITY........23-28 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......UP SLOPE/VALLEY 6 TO 12 MPH.
 RIDGETOP...........NORTHWEST 10 TO 20 MPH.

.FORECAST DAYS 3 THROUGH 5...
.LABOR DAY...
MOSTLY CLEAR. LOWS 40 TO 45. HIGHS 62 TO 68. SOUTHWEST WINDS 5 TO
10 MPH.
.TUESDAY...
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS 41 TO 46.
HIGHS 62 TO 67. NORTHEAST WINDS 5 TO 10 MPH.
.WEDNESDAY...
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS 37 TO 42.
HIGHS 60 TO 65. NORTHWEST WINDS 5 TO 10 MPH.

$$
FORECASTER...CHAMBERS
REQUESTED BY...IC
TYPE OF REQUEST...WILDFIRE
.TAG 20110903.RESER.01/BYZ