FNUS75 KCYS 232012
FWSCYS

SPOT FORECAST FOR FERRIS...BLM
NATIONAL WEATHER SERVICE CHEYENNE WY
212 PM MDT FRI SEP 23 2011

FORECAST IS BASED ON REQUEST TIME OF 1339 MDT ON SEPTEMBER 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE IN THE UPPER ATMOSPHERE WILL BE OVER THE ROCKIES
THROUGH THE WEEKEND. THE RESULT WILL BE WARM AND DRY CONDITIONS
DURING THAT TIME. SOUTHWEST WINDS WILL BE GENERALLY BETWEEN 5 AND
15 MPH DURING THE DAYTIME HOURS THROUGH SATURDAY WITH SOME GUSTS
TO 20 MPH THROUGH SUNSET THIS EVENING. TEMPERATURES WILL BE
ABOUT 10 DEGREES ABOVE NORMAL AND MINIMUM RELATIVE HUMIDITY VALUES
WILL BE AROUND 15 PERCENT.

THE SOUTHWEST SURFACE WINDS WILL INCREASE BY SUNDAY AFTERNOON WITH
GUSTS AS HIGH AS 25 MPH. A COLD FRONT WILL MOVE ACROSS THE FIRE
SITE MONDAY AFTERNOON. THE FRONT WILL PRODUCE EVEN STRONGER...
GUSTY WINDS AND STILL WARM AND DRY CONDITIONS. POSSIBLE RED FLAG
CONDITIONS CAN BE EXPECTED FOR SUNDAY AFTERNOON AND AGAIN ON
MONDAY.

.TONIGHT...

SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....AROUND 44.
MAX HUMIDITY........50 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS AROUND 10 MPH EARLY IN THE
                    EVENING BECOMING DOWNSLOPE/DOWNVALLEY 4-7 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......4100 FT AGL DECREASING TO 200 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 9 MPH IN THE EARLY EVENING...THEN
                    DOWNSLOPE/DOWNVALLEY 6 MPH.
SMOKE DISPERSAL.....GOOD BECOMING POOR BY MIDNIGHT (1000-40700
                    KNOT-FT).

.SATURDAY...

SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 74.
MIN HUMIDITY........15 PERCENT.
WIND (20 FT)........BECOMING SOUTHWEST 5 TO 10 MPH BY LATE MORNING.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3300 FT AGL INCREASING TO 6400 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....WEST AROUND 7 MPH.
SMOKE DISPERSAL.....POOR BECOMING GOOD (19600-44700 KNOT-FT).

$$
FORECASTER...WEILAND
REQUESTED BY...KIRK WARRINGTON
TYPE OF REQUEST...WILDFIRE
.TAG 20110923.FERRI.01/CYS