FNUS75 KCYS 042249
FWSCYS

SPOT FORECAST FOR UPPER SEPARATION RX...BUREAU OF LAND MANAGEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
449 PM MDT THU NOV 4 2010

FORECAST IS BASED ON IGNITION TIME OF 1700 MDT ON NOVEMBER 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
THROUGH FRIDAY...A SURFACE LOW PRESSURE TROUGH WILL BE OVER FAR
EASTERN WYOMING WITH SURFACE HIGH PRESSURE CENTERED OVER NORTHWEST
COLORADO. HIGH PRESSURE WILL BE OVER THE BURN SITE IN THE UPPER
ATMOSPHERE FRIDAY THROUGH SUNDAY. THE RESULT WILL BE WARM AND DRY
WEATHER WITH BREEZY CONDITIONS DURING THE DAYTIME HOURS. A STORM
SYSTEM AND ASSOCIATED COLD FRONT WILL BRING IN A CHANCE OF SHOWERS
SUNDAY NIGHT AND MONDAY.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....AROUND 34.
MAX HUMIDITY........65 TO 70 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 9 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......LOWERING TO 600 FEET AGL BY MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.
SMOKE DISPERSAL.....FAIR BECOMING POOR BY MIDNIGHT.
                    (13800-2100 KNOT-FT).

.FRIDAY...

SKY/WEATHER.........SUNNY (0-5 PERCENT).
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........30 TO 35 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 10 TO 16 MPH BY MID MORNING.
                    GUSTS UP TO 25 MPH BY MIDDAY.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 3000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 22 MPH.
SMOKE DISPERSAL.....POOR BECOMING VERY GOOD IN THE AFTERNOON.
                    12500-47400 KNOT-FT).


.OUTLOOK FOR THE WEEKEND...WARM...DRY AND BREEZY.  HIGHS FROM 60
TO 65. MINIMUM RELATIVE HUMIDITY AROUND 25 PERCENT. SOUTHWEST
WINDS 14 TO 22 MPH DURING THE DAY WITH GUSTS TO 35 MPH.

$$

FORECASTER...WEILAND
REQUESTED BY...HANS PEDERSEN
TYPE OF REQUEST...PRESCRIBED
.TAG 20101104.UPPER.01/CYS