FNUS75 KBYZ 231346
FWSBYZ

SPOT FORECAST FOR CROW AGENCY WUI...BIA, CROW AGENCY
NATIONAL WEATHER SERVICE BILLINGS MT
746 AM MDT FRI MAR 23 2012

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

.DISCUSSION...
A WEAK FRONTAL BOUNDARY WILL BE OVER THE BURN SITE TODAY. THIS WILL
RESULT IN LIGHT WINDS INTO EARLY AFTERNOON...DOMINATED BY THE TOPOGRAPHY.
WINDS WILL BECOME SOUTHEAST 5 TO 10 MPH LATE THIS AFTERNOON. TEMPERATURES
WILL REACH 65 TO 70 DEGREES WITH RELATIVE HUMIDITIES IN THE MID TO UPPER 20S.
A STRONG DRY COLD FRONT WILL SURGE SOUTH ACROSS THE BURN SITE EARLY THIS
EVENING BRINGING AN ABRUPT SHIFT TO NORTHWEST WINDS 15 TO 25 MPH. THE WINDS
WILL DIMINISH TO 5 TO 10 MPH OVERNIGHT. RELATIVE HUMIDITIES WILL RECOVER
TO 95 TO 100 PERCENT. THE WINDS SHOULD PRECLUDE FOG DEVELOPMENT. THE BURN
AREA WILL BE BEHIND THE FRONT ON SATURDAY ON THE SOUTHERN EDGE OF A HIGH
PRESSURE SYSTEM. IT WILL BE COOLER WITH HIGHS 60 TO 65 DEGREES AND RELATIVE
HUMIDITIES 30 TO 35 PERCENT. WINDS WILL BE DOWNSLOPE/DOWN-VALLEY AROUND 5 MPH
EARLY...BECOMING EAST 5 TO 15 MPH BY AFTERNOON.




.REST OF TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....65-70.
MIN HUMIDITY........24-29 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......UPSLOPE/UP-VALLEY WINDS 5 TO 10 MPH INTO EARLY AFTERNOON
                    ...BECOMING SOUTHEAST LATE IN THE AFTERNOON.
 RIDGETOP...........VARIABLE 5 TO 15 MPH.
MIXING HEIGHT.......4000 FT AGL.
MIXING WINDS........SOUTHWEST 5 TO 15 MPH.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....35-40.
MAX HUMIDITY........95-100 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST WINDS 15 TO 25 MPH IN THE EVENING
                    DECREASING TO 5 TO 10 MPH OVERNIGHT.
 RIDGETOP...........NORTH 10 TO 20 MPH.
MIXING HEIGHT.......500 FT AGL.
MIXING WINDS........NORTHWEST 15 TO 25 MPH.

.SATURDAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....60-65.
MIN HUMIDITY........30-35 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWNSLOPE/DOWN-VALLEY AROUND 5 MPH EARLY...
                    BECOMING EAST 5 TO 15 MPH BY AFTERNOON.
 RIDGETOP...........SOUTHEAST 15 TO 25 MPH.
MIXING HEIGHT.......5500 FT AGL.
MIXING WINDS........SOUTHEAST 10 TO 20 MPH.

$$
FORECASTER...ARTHUR
REQUESTED BY...BRYCE ROGERS
TYPE OF REQUEST...PRESCRIBED
.TAG 20120323.CROWA.01/BYZ