FNUS75 KBYZ 030050
FWSBYZ

SPOT FORECAST FOR CHALKY SUPPORT...NORTHERN CHEYENNE AGENCY
NATIONAL WEATHER SERVICE BILLINGS MT
650 PM MDT THU AUG 2 2012

FORECAST IS BASED ON REQUEST TIME OF 1900 MDT ON AUGUST 02.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT FRIDAY...

.DISCUSSION...
A COLD FRONT WILL CROSS THE FIRE BETWEEN MIDNIGHT MDT AND 200 AM MDT
TONIGHT. WINDS WILL BE GUSTY FROM THE NORTH THROUGH THE NIGHT. RELATIVE
HUMIDITIES WILL RECOVER INTO THE 50S. FRIDAY WILL BE COOLER WITH
HUMIDITIES IN THE LOWER 30S. WINDS WILL BE GUSTY FROM THE NORTHWEST.
A STRONG WEATHER DISTURBANCE WILL BRING SHOWERS AND SCATTERED THUNDERSTORMS
TO THE FIRE THROUGH THE DAY. A FEW SHOWERS AND THUNDERSTORMS WILL LINGER
INTO THE EVENING. WINDS WILL BE NORTHWEST 5 TO 15 MPH FRIDAY NIGHT.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. AREAS OF SMOKE IN THE EVENING.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....60-65.
MAX HUMIDITY........54-59 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTH WINDS 15 TO 25 MPH. GUSTS UP TO 30
                    MPH IN THE EVENING.
 RIDGETOP...........NORTH 15 TO 25 MPH.
MIXING HEIGHT.......1000 FT AGL.
MIXING WINDS........NORTH 15 TO 25 MPH.

.FRIDAY...

SKY/WEATHER.........PARTLY SUNNY WITH NUMEROUS RAIN SHOWERS AND
                    SCATTERED THUNDERSTORMS.
CWR.................31 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....73-78.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST WINDS 10 TO 20 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS.
 RIDGETOP...........NORTH 15 TO 30 MPH.
MIXING HEIGHT.......7900 FT AGL.
MIXING WINDS........NORTH 15 TO 30 MPH.

.FRIDAY NIGHT...

SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND
                    THUNDERSTORMS IN THE EVENING.
CWR.................5 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....50-55.
MAX HUMIDITY........79-84 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST WINDS 5 TO 15 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
 RIDGETOP...........WEST 15 TO 30 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........NORTHWEST 15 TO 30 MPH.

$$
FORECASTER...ARTHUR
REQUESTED BY...MIKE BEARCOMESOUT
TYPE OF REQUEST...WILDFIRE
.TAG 20120802.CHALK.01/BYZ