FNUS75 KCYS 292249
FWSCYS

SPOT FORECAST FOR IRON MOUNTAIN RX...BLM
NATIONAL WEATHER SERVICE CHEYENNE WY
449 PM MDT THU MAR 29 2012

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON MARCH 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...FIRE WEATHER WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH
FRIDAY EVENING...

.DISCUSSION...
WARM...DRY AND WINDY WEATHER WILL RETURN TO THE BURN SITE ON FRIDAY
AND AGAIN ON SATURDAY.  A SURFACE TROUGH WILL DEVELOP ALONG THE
EASTERN WYOMING BORDER TONIGHT AND CONTINUE THROUGH FRIDAY NIGHT.
WESTERLY WIND FLOW IN THE MID AND UPPER LEVELS OF THE ATMOSPHERE
WILL BE OVER THE BURN SITE AND BRING IN PERIODS OF MID AND HIGH
LEVEL CLOUDS DURING THAT TIME.  TEMPERATURES WILL BE ABOVE NORMAL
THROUGH FRIDAY NIGHT AND WESTERLY SURFACE WINDS WILL GUST AS HIGH
AS 45 MPH FROM 9 AM FRIDAY THROUGH MIDNIGHT FRIDAY NIGHT.

.FRIDAY...

SKY/WEATHER.........PARTLY CLOUDY AND WINDY (25-35 PERCENT).
MAX TEMPERATURE.....AROUND 65.
MIN HUMIDITY........13 PERCENT.
WIND (20 FT)........WEST WINDS INCREASING TO 19 TO 27 MPH BY 9 AM.
                    GUSTS AS HIGH AS 45 MPH BY LATE MORNING AND
                    THROUGH THE AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4700 FT AGL INCREASING TO 9000 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....WEST AROUND 32 MPH.
SMOKE DISPERSAL.....EXCELLENT BY LATE MORNING (106700-277400 KNOT-FT).

.FRIDAY NIGHT...

SKY/WEATHER.........PARTLY CLOUDY AND WINDY IN THE EVENING
                    (25-35 PERCENT).
MIN TEMPERATURE.....AROUND 41.
MAX HUMIDITY........51 PERCENT.
WIND (20 FT)........WEST WINDS 12 TO 20 MPH. GUSTS UP TO 40 MPH
                    DECREASING TO 30 MPH IN THE LATE EVENING AND
                    OVERNIGHT.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4100 FT AGL DECREASING TO 200 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 21 MPH IN THE EVENING...THEN 15
                    MPH.
SMOKE DISPERSAL.....EXCELLENT BECOMING POOR AFTER MIDNIGHT
                    (3700-97300 KNOT-FT).

$$
FORECASTER...WEILAND
REQUESTED BY...CHRIS OTTO
TYPE OF REQUEST...PRESCRIBED
.TAG 20120330.IRONM.01/CYS