FNUS75 KBYZ 031428
FWSBYZ

SPOT FORECAST FOR CHALKY...NORTHERN CHEYENNE AGENCY
NATIONAL WEATHER SERVICE BILLINGS MT
828 AM MDT FRI AUG 3 2012

FORECAST IS BASED ON REQUEST TIME OF 0825 MDT ON AUGUST 03.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
SHOWER ACTIVITY WILL SPREAD INTO THE FIRE SITE FROM THE WEST
BEGINNING AROUND 10 AM THIS MORNING...WITH OFF AND ON SHOWERS AND
A FEW THUNDERSTORMS THEN EXPECTED THROUGH THE AFTERNOON. A WETTING
RAIN IS POSSIBLE. OVERALL EXPECT MUCH COOLER TEMPS AND HIGHER
HUMIDITY TODAY...WITH PERSISTENT NORTHWEST WINDS GUSTING FROM 20
TO 30 MPH. WINDS AND SHOWER ACTIVITY WILL DIE DOWN TONIGHT. IT
WILL BE DRY AND WARMER ON SATURDAY.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS LIKELY...WITH A CHANCE OF
                    THUNDERSTORMS.
CWR.................40 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....70-74.
MIN HUMIDITY........33-38 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST TO NORTH 10-20 MPH WITH GUSTS TO 25 MPH.
 RIDGETOP...........NORTHWEST 15-25 MPH WITH GUSTS TO 30 MPH.
MIXING HEIGHT.......9000 FT AGL.
MIXING WINDS........NORTHWEST 25 MPH.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....50-55.
MAX HUMIDITY........75-85 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST 10-20 MPH DECREASING TO 5-12 MPH
                    AFTER MIDNIGHT.
 RIDGETOP...........NORTHWEST 15-25 MPH DECREASING TO 10-15 MPH
                    AFTER MIDNIGHT.
MIXING HEIGHT.......FALLING TO 1000 FT AGL.
MIXING WINDS........NORTHWEST 15 MPH.

.SATURDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....74-79.
MIN HUMIDITY........22-27 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST 5-15 MPH.
 RIDGETOP...........NORTHWEST 10-20 MPH.
MIXING HEIGHT.......8500 FT AGL.
MIXING WINDS........NORTHWEST 15 MPH.

$$
FORECASTER...LESTER
REQUESTED BY...LEE OLD BEAR
TYPE OF REQUEST...WILDFIRE
.TAG 20120803.CHALK.01/BYZ