FNUS75 KBYZ 231133
FWSBYZ

SPOT FORECAST FOR BENCH STEWARDSHIP...MEDICINE WHEEL RD
NATIONAL WEATHER SERVICE BILLINGS MT
533 AM MDT WED SEP 23 2009

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON SEPTEMBER 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
THE WEATHER PATTERN WILL CHANGE LITTLE OVER THE BURN SITE FOR THE
NEXT TWO DAYS AS IT WILL BE BETWEEN THE INFLUENCES OF STATIONARY
UPPER LEVEL LOW PRESSURE OVER NEBRASKA AND UPPER LEVEL HIGH
PRESSURE BUILDING OVER IDAHO. THIS WILL KEEP SURFACE HIGH PRESSURE
OVER THE BURN SITE TODAY WITH WINDS RESPONDING TO DIURNAL TERRAIN
EFFECTS. TEMPERATURES WILL BE A FEW DEGREES WARMER THAN TUESDAY
AND HUMIDITY SHOULD BE SIMILAR. THE UPPER LEVEL FLOW WILL KEEP
NORTHEASTERLY RIDGETOP WINDS OVER THE SITE THROUGH THURSDAY. EXPECT
A MODERATE HUMIDITY RECOVERY TONIGHT WITH LIGHT DOWNSLOPE WINDS.
ON THURSDAY EXPECT TEMPERATURES TO WARM A FEW MORE DEGREES AND
HUMIDITY TO AGAIN FALL TO AROUND 20 PERCENT. WINDS AGAIN SHOULD BE
SLOPE ORIENTED WITH LESS UPVALLEY FLOW IN THE AFTERNOON THAN
TODAY. FRIDAY AND SATURDAY LOOK WARMER AND DRIER WITH RIDGETOP
WINDS BECOMING NORTHWESTERLY AND UPVALLEY FLOWS STRONGER IN THE
AFTERNOON THAN PREVIOUS DAYS. BORSUM

.TODAY...

SKY/WEATHER.........SUNNY...A FEW HIGH CLOUDS BY AFTERNOON
CWR.................0 PERCENT.
MAX TEMPERATURE.....56-60.
MIN HUMIDITY........18-22 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTH WINDS 4 TO 8 MPH WITH GUSTS TO 15 MPH
                    THIS AFTERNOON. WINDS MAY TREND NORTHWESTERLY
                    BY LATE AFTERNOON.
 RIDGETOP...........NORTHEAST 18 TO 25 MPH.
MIXING HEIGHT.......4500 FT AGL.
MIXING WINDS........NORTHEAST 12 TO 18 MPH.

.TONIGHT...

MIN TEMPERATURE.....37-42.
MAX HUMIDITY........57-62 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWNSLOPE/DOWNVALLEY 4 TO 8 MPH.

.THURSDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....59-63.
MIN HUMIDITY........18-22 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTH WINDS 5 TO 10 MPH
 RIDGETOP...........NORTHEAST 15 TO 20 MPH.
MIXING HEIGHT.......5400 FT AGL.
MIXING WINDS........NORTHEAST 12 TO 18 MPH.

$$
FORECASTER...BORSUM
REQUESTED BY...WARREN APPELHANS
TYPE OF REQUEST...PRESCRIBED
.TAG 20090923.BENCH.01/BYZ