FNUS75 KBYZ 221436
FWSBYZ

SPOT FORECAST FOR STORY RX...USFS BIGHORN NF
NATIONAL WEATHER SERVICE BILLINGS MT
836 AM MDT SUN MAR 22 2009

FORECAST IS BASED ON IGNITION TIME OF 0859 MDT ON MARCH 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A LOW PRESSURE SYSTEM OVER SOUTHEAST MONTANA WILL SHIFT EAST TODAY.
THIS SYSTEM WILL BRING SCATTERED RAIN SHOWERS THROUGH THE DAY WITH
SCATTERED AFTERNOON THUNDERSTORMS. IT WILL BE WARM AND WINDY WITH
SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 35 MPH. RELATIVE HUMIDITIES
WILL FALL TO 25 TO 30 PERCENT. WINDS WILL SHIFT TO THE NORTH AT 20 TO 30
MPH LATE THIS AFTERNOON OR EARLY THIS EVENING AS A SOUTHERN AREA OF LOW
PRESSURE DEEPENS OVER EASTERN WYOMING. WINDS WILL GUST TO 40 MPH OVERNIGHT.
RAIN WILL QUICKLY CHANGE TO SNOW OVER THE BURN AREA THIS EVENING. AS LOW
PRESSURE MOVES EAST OUT OF WYOMING ON MONDAY...GUSTY NORTH WINDS AT 15 TO
30 MPH WILL PREVAIL OVER THE BURN SITE AND IT WILL BE MUCH COLDER WITH
SNOW AND BLOWING SNOW.

.REST OF TODAY...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED RAIN SHOWERS THROUGH
                    THE DAY. SCATTERED THUNDERSTORMS IN THE
                    AFTERNOON.
CWR.................19 PERCENT.
MAX TEMPERATURE.....60-65.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO
                    AROUND 35 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
 RIDGETOP...........SOUTHWEST 20 TO 35 MPH.
MIXING HEIGHT.......2600 FT AGL.
MIXING WINDS........SOUTHWEST 30 TO 45 MPH.

.TONIGHT...

SKY/WEATHER.........CLOUDY. RAIN IN THE EVENING...THEN SNOW
                    OVERNIGHT. BLOWING SNOW OVERNIGHT.
CWR.................50 PERCENT.
MIN TEMPERATURE.....25-30.
MAX HUMIDITY........88-93 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTH WINDS 20 TO 30 MPH. GUSTS UP TO 40 MPH
                    OVERNIGHT.
 RIDGETOP...........NORTH 5 TO 10 MPH INCREASING TO 20 TO 30 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........NORTH 10 TO 20 MPH.

.MONDAY...

SKY/WEATHER.........CLOUDY. BLOWING SNOW. SNOW.
CWR.................70 PERCENT.
MAX TEMPERATURE.....31-36.
MIN HUMIDITY........80-85 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WINDY. NORTH WINDS 15 TO 30 MPH. GUSTS UP
                    TO 45 MPH IN THE AFTERNOON.
 RIDGETOP...........NORTH 35 TO 55 MPH.
MIXING HEIGHT.......4500 FT AGL.
MIXING WINDS........NORTH 35 TO 55 MPH.

$$
FORECASTER...ARTHUR
REQUESTED BY...ERIC COMSTOCK
TYPE OF REQUEST...PRESCRIBED
.TAG 20090322.STORY.01/BYZ