FNUS75 KBYZ 272248
FWSBYZ

SPOT FORECAST FOR GRANNIS FIRE...PARK COUNTY RURAL
NATIONAL WEATHER SERVICE BILLINGS MT
448 PM MDT SAT APR 27 2013

FORECAST IS BASED ON IGNITION TIME OF 1705 MDT ON APRIL 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

STRONG WEST WINDS WILL CONTINUE UNTIL AROUND 9 OR 10 PM WITH
GUSTS OF 40 TO 50 MPH AT TIMES. WINDS OVERNIGHT WILL STILL GUST
20 TO 30 MPH OUT OF THE WEST BEHIND A WEAK COLD FRONT. EXPECT
MARGINAL TO POOR RH RECOVERIES TONIGHT IN THE 40 TO 50 PERCENT
RANGE. SCATTERED SHOWERS OVERNIGHT WILL RESULT IN ONLY A 10
PERCENT WETTING RAIN CHANCE...BUT COULD IMPROVE RH RECOVERIES IF
THEY END UP CLOSE TO THE FIRE.  SLIGHTLY COOLER TOMORROW WITH RH
VALUES NEAR 20 PERCENT. WINDS WILL REMAIN WESTERLY WITH GUSTS 20
TO 30 MPH IN THE AFTERNOON. CHAMBERS

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS OVERNIGHT.
CWR.................10 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....42-47.
MAX HUMIDITY........43-48 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 25 TO 35 MPH WITH GUSTS TO 50 MPH IN THE
                    EVENING...DECREASING TO 15 TO 20 MPH WITH GUSTS TO
                    30 MPH AFTER 10 PM.
 RIDGETOP...........WEST 35 TO 55 MPH.
HAINES INDEX........5.

.SUNDAY...

SKY/WEATHER.........MOSTLY CLOUDY WITH SCATTERED RAIN SHOWERS.
CWR.................10 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....60-65.
MIN HUMIDITY........19-25 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 10 TO 20 MPH. GUSTS TO 30 MPH IN THE
                    AFTERNOON.
 RIDGETOP...........WEST 15 TO 30 MPH.
HAINES INDEX........5.

$$
FORECASTER...CHAMBERS
REQUESTED BY...JEFF TONG
TYPE OF REQUEST...PRESCRIBED
.TAG 20130427.GRANN.02/BYZ