FNUS75 KCYS 251334
FWSCYS

SPOT FORECAST FOR DEEP CREEK RX...BLM
NATIONAL WEATHER SERVICE CHEYENNE WY
734 AM MDT FRI SEP 25 2009

...FIRE WEATHER WATCH IN EFFECT AT BURN SITE FOR SATURDAY...

IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
LARGE UPPER LOW THAT HAS KEPT CLOUDS AROUND THE BURN SITE REALLY
ALL WEEK WILL FINALLY BEGIN TO DEPART TODAY. AS A RESULT...THE
PARTLY CLOUDY EAST SKY WILL BECOME MOSTLY SUNNY BY LATE MORNING.
THE AIR MASS WILL DRY AND TEMPERATURES WILL WARM AT THE BURN SITE
THROUGH THE FIRST PART OF THE WEEKEND. WINDS WILL TURN NORTHERLY
THIS AFTERNOON...HOWEVER TEMPERATURES WILL ONLY ALLOW MINIMUM
RELATIVE HUMIDITIES TO DIP TO 16 TO 20 PERCENT. DRY...WARMER...AND
WINDIER CONDITIONS ARE ANTICIPATED FOR SATURDAY AFTERNOON...THUS
PROMPTING THE ISSUANCE OF FIRE WEATHER WATCH.

.TODAY...

SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) UNTIL 1000 THEN
                    MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....66 TO 70.
MIN HUMIDITY........16 TO 20 PERCENT.
WIND (20 FT)........EAST AT 9 TO 13 MPH UNTIL 1000...THEN UPSLOPE/UPVALLEY
                    AT 5 TO 9 MPH UNTIL 1300...THEN NORTH/NORTHWEST AT
                    15 TO 20 MPH...WITH GUSTS TO 25 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1700 FT AGL INCREASING TO 8700 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....EAST AT AROUND 10 MPH UNTIL 1000...THEN NORTH AT AROUND
                    15 MPH.
SMOKE DISPERSAL.....POOR BECOMING EXCELLENT AFTER NOON (6800-147700 KNOT-FT).

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....36-40.
MAX HUMIDITY........65-70 PERCENT.
WIND (20 FT)........NORTH WINDS 10 TO 15 MPH UNTIL 2200...THEN
                    DOWNSLOPE/DOWNVALLEY 4-7 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......4200 FT AGL DECREASING TO 700 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....NORTH AT AROUND 10 MPH UNTIL 2200...THEN EAST
                    AT AROUND 10 MPH.
SMOKE DISPERSAL.....GOOD BECOMING POOR AFTER MIDNIGHT (2900-59400 KNOT-FT).

.SATURDAY...

SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....73-78.
MIN HUMIDITY........12-15 PERCENT.
WIND (20 FT)........EAST AT AROUND 10 MPH UNTIL 1000...THEN SOUTHWEST AT
                    10 TO 15 MPH UNTIL 1300...THEN WEST AT 15 TO 20 MPH
                    WITH GUSTS TO 30 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 7600 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....EAST AT AROUND 10 MPH UNTIL 1000...THEN WEST AT
                    15 TO 20 MPH WITH GUSTS TO 30 MPH.
SMOKE DISPERSAL.....POOR BECOMING EXCELLENT (4800-121600 KNOT-FT).

$$

FORECASTER...HAHN
REQUESTED BY...PUTNAM
TYPE OF REQUEST...PRESCRIBED
.TAG 20090925.DEEPC.02/CYS