FNUS75 KBYZ 221407
FWSBYZ

SPOT FORECAST FOR DEVIL S CANYON RX...USFS BIGHORN NF
NATIONAL WEATHER SERVICE BILLINGS MT
807 AM MDT WED MAY 22 2013

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON MAY 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A LOW PRESSURE SYSTEM AND ASSOCIATED COLD FRONT WILL APPROACH THE
BURN SITE THROUGH THURSDAY. EXPECT ISOLATED AFTERNOON AND EVENING
THUNDERSTORMS THROUGH THURSDAY. STORMS COULD BE STRONG
WITH LOCALLY HEAVY RAIN. SOUTHEAST WINDS WILL INCREASE TO 15 TO 25
MPH LATE TODAY...THEN WILL STRENGTHEN FURTHER TO 30 TO 40 MPH
TONIGHT. EXPECT SOUTHEAST WINDS 35 TO 45 MPH ON THURSDAY.

.REST OF TODAY...

SKY/WEATHER.........MOSTLY SUNNY. ISOLATED SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
CWR.................11 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....53-58.
MIN HUMIDITY........39-44 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHEAST WINDS 5 TO 15 MPH...INCREASING TO
                    15 TO 25 MPH LATE. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
 RIDGETOP...........SOUTHEAST 5 TO 15 MPH.
MIXING HEIGHT.......3800 FT AGL.
MIXING WINDS........SOUTHEAST 5 TO 15 MPH.
HAINES INDEX........4.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. ISOLATED SHOWERS AND
                    THUNDERSTORMS IN THE EVENING...THEN ISOLATED
                    RAIN SHOWERS OVERNIGHT.
CWR.................13 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....41-46.
MAX HUMIDITY........71-76 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHEAST WINDS 30 TO 40 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
 RIDGETOP...........SOUTHEAST 30 TO 40 MPH.
MIXING HEIGHT.......200 FT AGL.
MIXING WINDS........SOUTHEAST 30 TO 40 MPH.
HAINES INDEX........3.

.THURSDAY...

SKY/WEATHER.........MOSTLY SUNNY. ISOLATED SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
CWR.................13 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....56-61.
MIN HUMIDITY........34-39 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHEAST WINDS 35 TO 45 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
 RIDGETOP...........SOUTH 30 TO 45 MPH.
MIXING HEIGHT.......4800 FT AGL.
MIXING WINDS........SOUTHEAST 30 TO 45 MPH.
HAINES INDEX........4.

$$
FORECASTER...ARTHUR
REQUESTED BY...MARVIN MATTHIESEN
TYPE OF REQUEST...PRESCRIBED
.TAG 20130522.DEVIL.01/BYZ