FNUS75 KBYZ 231955
FWSBYZ

SPOT FORECAST FOR MAIN BOULDER UNIT 7 RX...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
155 PM MDT MON APR 23 2012

FORECAST IS BASED ON IGNITION TIME OF 1350 MDT ON APRIL 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
...THUNDERSTORMS WITH STRONG WIND GUSTS POSSIBLE EACH AFTERNOON...

A RIDGE OF HIGH PRESSURE WILL BRING VERY WARM TEMPERATURES TO THE SITE
TODAY WITH READINGS OF 80 TO 85 DEGREES. TUESDAY WILL BE COOLER...IN THE
UPPER 60S TO LOWER 70S...DUE TO INCREASED CLOUD COVER. RELATIVE HUMIDITY
VALUES WILL BE 15 TO 20 PERCENT THIS AFTERNOON...AND IN THE 30S ON
TUESDAY AFTERNOON. WINDS WILL BE SOUTHWEST 5 TO 15 MPH FOR THE REMAINDER
OF TODAY AND TONIGHT. WINDS WILL BE SOUTHWEST 10 TO 20 MPH ON TUESDAY
AHEAD OF A COLD FRONT THAT WILL APPROACH THE SITE FROM THE NORTH IN THE
LATE AFTERNOON. GUSTY AND ERRATIC WINDS WILL BE POSSIBLE NEAR
THUNDERSTORMS EACH AFTERNOON AND THIS EVENING.

.REST OF TODAY...

SKY/WEATHER.........PARTLY SUNNY WITH SCATTERED THUNDERSTORMS. SOME
                    THUNDERSTORMS MAY PRODUCE GUSTY WINDS.
CWR.................19 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....80-85.
MIN HUMIDITY........15-20 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 15 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS.
 RIDGETOP...........WEST 10 TO 20 MPH.
MIXING HEIGHT.......6200 FT AGL.
MIXING WINDS........WEST 15 TO 25 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED THUNDERSTORMS IN THE
                    EVENING...THEN SCATTERED RAIN SHOWERS
                    OVERNIGHT. SOME THUNDERSTORMS MAY PRODUCE GUSTY
                    WINDS IN THE EVENING.
CWR.................19 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....45-50.
MAX HUMIDITY........92-97 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 15 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
 RIDGETOP...........SOUTHWEST 10 TO 20 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........WEST 15 TO 25 MPH.

.TUESDAY...

SKY/WEATHER.........PARTLY SUNNY. SCATTERED RAIN SHOWERS IN THE
                    MORNING...THEN SCATTERED SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
CWR.................20 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....68-73.
MIN HUMIDITY........33-38 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 10 TO 20 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
 RIDGETOP...........WEST 10 TO 20 MPH.
MIXING HEIGHT.......5100 FT AGL.
MIXING WINDS........WEST 20 TO 35 MPH.

$$
FORECASTER...ARTHUR
REQUESTED BY...DENNIS SHERIDAN
TYPE OF REQUEST...PRESCRIBED
.TAG 20120423.MAINB.01/BYZ