FNUS75 KBYZ 181952
FWSBYZ

SPOT FORECAST FOR SPRINGDALE RR...BIG TIMBER SHERIFF
NATIONAL WEATHER SERVICE BILLINGS MT
152 PM MDT SUN MAR 18 2012

FORECAST IS BASED ON REQUEST TIME OF 1323 MDT ON MARCH 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

GREATEST CONCERN AT FIRE SITE IS STRONG AND GUSTY EAST WINDS
FOR THE NEXT SEVERAL HOURS. GUSTS AROUND 25 MPH WILL TAPER OFF
LATER THIS EVENING. TEMPERATURES WILL ONLY CLIMB A FEW MORE
DEGREES TODAY...WHICH WILL KEEP RH VALUES UP. A MOIST PACIFIC
STORM SYSTEM IS MOVING INTO THE AREA...AND WILL BRING WETTING
RAINS TO THE FIRE SITE THIS EVENING AND THROUGH MONDAY MORNING.
RAINS WILL SWITCH TO SNOW OVERNIGHT...AND BACK TO RAIN OR
RAIN/SNOW MIX FOR MONDAY. WINDS ARE EXPECTED TO TURN NORTHERLY
AFTER MIDNIGHT OVER THE BURN SITE...WITH GUSTS AROUND 20 MPH.
WINDS WILL SWITCH TO WESTERLY BY 6AM MONDAY...AND RISE THROUGH
THE DAY...WITH GUSTS AROUND 30 MPH BY MONDAY AFTERNOON.
TEMPERATURES MONDAY WILL BE MUCH COOLER...AND SHOWERS EXPECTED
THROUGH MUCH OF THE DAY.

.REST OF THE AFTERNOON...

SKY/WEATHER.........CLOUDY. SCATTERED SHOWERS DEVELOPING.
CWR.................30 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....52-56.
MIN HUMIDITY........35-45 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......EAST WINDS 10 TO 20 MPH...GUSTING TO 25MPH.
 RIDGETOP...........WEST 25 TO 35 MPH.
MIXING HEIGHT.......10600 FT AGL.
MIXING WINDS........WEST 25 TO 40 MPH.

.TONIGHT...

SKY/WEATHER.........CLOUDY. NUMEROUS RAIN SHOWERS IN THE
                    EVENING...THEN SNOW LIKELY OVERNIGHT.
CWR.................54 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....26-31.
MAX HUMIDITY........86-91 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHEAST WINDS 10 TO 20 MPH...GUSTS TO 25 MPH
                    IN THE EVENING SHIFTING TO THE WEST OVERNIGHT.
 RIDGETOP...........WEST 20 TO 35 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........WEST 20 TO 35 MPH.

.MONDAY...

SKY/WEATHER.........CLOUDY. SNOW LIKELY IN THE MORNING...THEN
                    NUMEROUS RAIN SHOWERS AND SNOW SHOWERS IN THE
                    AFTERNOON.
CWR.................62 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....36-41.
MIN HUMIDITY........46-51 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 10 TO 20 MPH...GUSTING TO 30MPH.
 RIDGETOP...........WEST 35 TO 50 MPH.
MIXING HEIGHT.......10600 FT AGL.
MIXING WINDS........WEST 25 TO 40 MPH.

$$
FORECASTER...LESTER/GILSTAD
REQUESTED BY...SWEET GRASS COUNTY
TYPE OF REQUEST...WILDFIRE
.TAG 20120318.SPRIN.01/BYZ