FNUS75 KBYZ 042053
FWSBYZ

SPOT FORECAST FOR CHALKY...IMT
NATIONAL WEATHER SERVICE BILLINGS MT
253 PM MDT SAT AUG 4 2012

FORECAST IS BASED ON REQUEST TIME OF 1441 MDT ON AUGUST 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A RIDGE OF HIGH PRESSURE WILL BUILD OVER THE FIRE SITE TONIGHT
AND WILL RESULT IN DRIER WEATHER AND WARMER TEMPERATURES THE NEXT
SEVERAL DAYS. TEMPERATURES WILL RISE INTO THE LOWER 90S SUNDAY
AND INTO THE MID TO UPPER 90S ON MONDAY. DRY AIR WILL ALSO BE
MOVING INTO THE AREA AND MINIMUM RH'S BOTH DAYS WILL BE IN THE
LOW TO MID TEENS. WINDS WILL BE LIGHT DURING THIS PERIOD. THE
NEXT CHANCE FOR SHOWERS AND THUNDERSTORMS WILL COME MONDAY NIGHT.
RICHMOND

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....53-58.
MAX HUMIDITY........59-69 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHEAST WINDS 5 TO 10 MPH IN THE EVENING
                    SHIFTING TO THE SOUTHEAST OVERNIGHT.
 RIDGETOP...........SOUTHWEST 10 TO 20 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........SOUTH 5 TO 15 MPH.
HAINES INDEX........4.

.SUNDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....85-92.
MIN HUMIDITY........14-19 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTH WINDS 5 TO 10 MPH.
 RIDGETOP...........SOUTHWEST 5 TO 10 MPH.
MIXING HEIGHT.......8000 FT AGL.
MIXING WINDS........SOUTH 5 TO 15 MPH.
HAINES INDEX........3.

.SUNDAY NIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....62-67.
MAX HUMIDITY........42-50 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......EAST WINDS 5 TO 10 MPH.
 RIDGETOP...........SOUTHWEST 5 TO 10 MPH.
MIXING HEIGHT.......3000 FT AGL.
MIXING WINDS........NORTHWEST 5 TO 10 MPH.
HAINES INDEX........4.

.MONDAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....92-96.
MIN HUMIDITY........13-18 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......LIGHT WINDS IN THE MORNING BECOMING EAST 5 TO
                    10 MPH IN THE AFTERNOON.
 RIDGETOP...........SOUTHEAST 5 TO 10 MPH.
MIXING HEIGHT.......13200 FT AGL.
MIXING WINDS........NORTHWEST 5 TO 15 MPH.
HAINES INDEX........5.

$$
FORECASTER...RICHMOND
REQUESTED BY...MARK HALE
TYPE OF REQUEST...WILDFIRE
.TAG 20120804.CHALK.02/BYZ