FNUS75 KBYZ 192026
FWSBYZ

SPOT FORECAST FOR SWEETCLOVER FIRE...BLM
NATIONAL WEATHER SERVICE BILLINGS MT
226 PM MDT SUN JUL 19 2009

FORECAST IS BASED ON REQUEST TIME OF 1408 MDT ON JULY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A COLD FRONT HAS MOVED THROUGH THE AREA THIS AFTERNOON ALONG WITH
SHOWERS AND THUNDERSTORMS. THE STORMS HAVE SET UP NUMEROUS
OUTFLOW BOUNDARIES WHICH WILL BRING ERRATIC WINDS TO THE FIRE
SITE FOR THE REST OF THE AFTERNOON. ANOTHER UPPER LEVEL
DISTURBANCE WILL MOVE INTO THE AREA LATER THIS EVENING AND
WILL BRING THE CHANCE OF MORE ISOLATED THUNDERSTORMS. THESE
STORMS WILL HAVE THE POTENTIAL OF PRODUCING WINDS GUSTS TO 45
MPH. SHOWERS AND THUNDERSTORMS WILL BE ENDING BY 9 PM THIS
EVENING. SURFACE HIGH PRESSURE WILL BUILD IN OVERNIGHT FROM THE
NORTH. THIS WILL BRING MUCH COOLER TEMPERATURES MONDAY ALONG WITH
RH'S ONLY FALLING INTO THE 20 PERCENT RANGE. RH'S WILL RECOVER
TONIGHT INTO THE 60S PERCENT RANGE.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. SCATTERED THUNDERSTORMS IN THE
                    EVENING. SOME THUNDERSTORMS MAY PRODUCE GUSTY
                    WINDS IN THE EVENING.
CWR.................16 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....53-58.
MAX HUMIDITY........67-72 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTH WINDS 5 TO 15 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
 RIDGETOP...........EAST 10 TO 20 MPH.

.MONDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....79-84.
MIN HUMIDITY........24-29 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTH WINDS 5 TO 15 MPH.
 RIDGETOP...........NORTH 5 TO 10 MPH.

$$
FORECASTER...RICHMOND
REQUESTED BY...MARK HEPPLER
TYPE OF REQUEST...WILDFIRE
.TAG 20090719.SWEET.01/BYZ