FNUS75 KCYS 280605
FWSCYS

SPOT FORECAST FOR FERRIS...BLM
NATIONAL WEATHER SERVICE CHEYENNE WY
1205 AM MDT SAT JUL 28 2012

FORECAST IS BASED ON REQUEST TIME OF 2131 MDT ON JULY 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
UPDATED SPOT TO UPDATE THE WIND FORECAST. FAIR HUMIDITY RECOVERY
TONIGHT OF 50 TO 55 PERCENT BUT HUMIDITY VALUES WILL DROP TO AROUND
15 PERCENT SATURDAY AFTERNOON. BREEZY CONDITIONS WILL SUBSIDE
LATE TONIGHT AND INTO SATURDAY MORNING. WINDS WILL MAINLY REMAIN
LIGHT SATURDAY BUT WITH DEEPER MIXING IN THE AFTERNOON GUSTS
TO 25 MPH WILL BE POSSIBLE. EXPECTED ISOLATED THUNDERSTORMS
SATURDAY AFTERNOON WHICH COULD PRODUCE ERRATIC WIND GUSTS UP
TO 50 MPH.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT).
MIN TEMPERATURE.....AROUND 60.
MAX HUMIDITY........53 PERCENT.
WIND (20 FT)........SOUTH-SOUTHWEST WINDS 14 TO 20 MPH WITH GUSTS TO 30 MPH
                    BECOMING WEST-SOUTHWEST AT 7 TO 11 MPH WITH
                    GUSTS AROUND 15 MPH BY 6 AM MDT.
CWR.................0 PERCENT.
LAL.................2.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6100 FT AGL DECREASING TO 400 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH.
SMOKE DISPERSAL.....EXCELLENT BECOMING POOR (4600-84400 KNOT-FT).

.SATURDAY...

SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT).
MAX TEMPERATURE.....AROUND 82.
MIN HUMIDITY........16 PERCENT.
WIND (20 FT)........WEST-SOUTHWEST WINDS 6 TO 9 MPH WITH GUSTS TO
                    15 MPH IN THE MORNING. WEST AT 5 TO 10 MPH IN THE
                    AFTERNOON WITH A FEW GUSTS TO 25 MPH.
CWR.................10 PERCENT INCREASING TO 20 PERCENT IN THE
                    AFTERNOON.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......7200 FT AGL INCREASING TO 13700 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....WEST-SOUTHWEST AROUND 12 MPH.
SMOKE DISPERSAL.....BECOMING EXCELLENT BY MID MORNING
                    (70000-133400 KNOT-FT).

$$
FORECASTER...LIEBL
REQUESTED BY...MARK MAIN
TYPE OF REQUEST...WILDFIRE
.TAG 20120727.FERRI.01/CYS