FNUS75 KBYZ 241545
FWSBYZ

SPOT FORECAST FOR ALDENS PILE BURN...NORTHERN CHEYENNE AGENCY
NATIONAL WEATHER SERVICE BILLINGS MT
845 AM MST THU JAN 24 2013

FORECAST IS BASED ON IGNITION TIME OF 1120 MST ON JANUARY 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
STRONG AND GUSTY WEST TO NORTHWEST WINDS WILL BE INCREASING
THROUGH THE DAY AT THE BURN SITE. WEST WINDS WILL BEGIN TO SLOWLY
TURN NORTHWEST BY THIS AFTERNOON...WHICH SHOULD FUNNEL WINDS
THROUGH THE VALLEY AND DIRECTLY INTO THE BURN SITE. WINDS WILL
BEGIN TO TAPER OFF AGAIN AROUND MIDNIGHT. EXPECT TO SEE MORE
IMPACT OF SHELTERING BY FRIDAY MORNING...WHEN WINDS AT THE BURN
SITE SHOULD BE PRIMARILY TERRAIN DRIVEN TO START THE DAY. LITTLE
OR NO PRECIPITATION AT THE BURN SITE FOR THE REMAINDER OF THE DAY
AS HIGH PRESSURE BUILD INTO THE REGION. TEMPERATURES WILL BE
SIGNIFICANTLY WARMER TODAY THAN YESTERDAY...WITH MINIMUM RH VALUES
HAVING ALREADY BEEN REACHED FOR THE DAY. TEMPERATURES WILL BE A
BIT COOLER AGAIN FRIDAY...WITH RH VALUES IN THE 30 PERCENT RANGE.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY. ISOLATED RAIN SHOWERS.
MAX TEMPERATURE.....50-55.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST WINDS 15 TO 25 MPH TURNING NORTHWEST BY
                    AFTERNOON. GUSTS UP TO 35 MPH IN THE
                    AFTERNOON.
 RIDGETOP...........WEST 35 TO 55 MPH.
MIXING HEIGHT.......4800 FT AGL.
MIXING WINDS........WEST 25 TO 40 MPH.
HAINES INDEX........4.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....19-24.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHWEST WINDS 25 TO 35 MPH WITH GUSTS TO
                    AROUND 55 MPH IN THE EVENING BECOMING WEST 5 TO
                    15 MPH OVERNIGHT.
 RIDGETOP...........NORTHWEST 35 TO 50 MPH.
MIXING HEIGHT.......400 FT AGL.
MIXING WINDS........NORTHWEST 15 TO 30 MPH.
HAINES INDEX........4.

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....37-42.
WIND (20 FT)........
 SLOPE/VALLEY.......LIGHT WINDS 5 TO 15 MPH...PRIMARILY TERRAIN DRIVEN
                    BECOMING SOUTH BY AFTERNOON.
 RIDGETOP...........NORTHWEST 25 TO 40 MPH.
MIXING HEIGHT.......3500 FT AGL.
MIXING WINDS........WEST 10 TO 20 MPH.
HAINES INDEX........4.

$$
FORECASTER...GILSTAD
REQUESTED BY...MIKE BEARCOMEOUT
TYPE OF REQUEST...PRESCRIBED
.TAG 20130124.ALDEN.01/BYZ