FNUS75 KCYS 012302
FWSCYS

SPOT FORECAST FOR MARKING PEN PRESCRIBED BURN...BLM RAD
NATIONAL WEATHER SERVICE CHEYENNE WY
502 PM MDT SUN MAY 1 2011

FORECAST IS BASED ON IGNITION TIME OF 1200 MDT ON MAY 02.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A WARMER DAY IS EXPECTED MONDAY AT THE BURN SITE WITH MOSTLY SUNNY
SKIES. SURFACE HIGH PRESSURE ACROSS THE AREA IS EXPECTED TO KEEP
20 FOOT WINDS BELOW THE LEVEL OF CONCERN.

TEMPERATURES WILL INCREASE TUESDAY AT THE BURN SITE...BUT WINDS WILL
ALSO INCREASE AHEAD OF A SURFACE LOW AND WEAK COLD FRONT THAT WILL
BE OVER THE AREA BY EARLY WEDNESDAY AND CREATE SOME CONTINUED SLIGHT CHANCES FOR PRECIPITATION.
A WARMING TREND IS THEN EXPECTED THROUGH FRIDAY WITH LITTLE TO NO
PRECIPITATION ANTICIPATED

.MONDAY...

SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
MAX TEMPERATURE.....46 TO 52 DEGREES.
MIN HUMIDITY........26 TO 33 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 3 TO 5 MPH BECOMING WEST
                    6 TO 8 MPH WITH GUSTS TO AROUND 10 MPH BY
                    11 AM MDT...THEN SLIGHT INCREASE TO 8 TO 11
                    MPH WITH GUSTS TO AROUND 15 MPH FROM 4 PM MDT
                    TO SUNSET.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1500 FT AGL INCREASING TO 11300 FT AGL BY 1 PM
                    MDT IN THE AFTERNOON.
TRANSPORT WINDS.....WEST-SOUTHWEST 15 MPH.
SMOKE DISPERSAL.....GOOD TO EXCELLENT (40600-210600 KNOT-FT).

.TUESDAY...
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT)...BECOMING
                    MOSTLY CLOUDY WITH ISOLATED RAIN SHOWERS
                    AND A SLIGHT CHANCE FOR A THUNDERSTORM
                    AFTER 4 PM MDT.
MAX TEMPERATURE.....53 TO 58 DEGREES.
MIN HUMIDITY........28 TO 34 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY AT SUNRISE 2 TO 4 MPH BECOMING
                    SOUTHWEST 10 TO 15 GUSTING TO 18 MPH BY 8 AM
                    MDT...THEN INCREASING AGAIN TO 18 TO 22 MPH
                    WITH GUSTS TO 25 TO 28 MPH BY NOON MDT THROUGH
                    SUNSET.
CWR.................LESS THAN 10 PERCENT.
LAL.................2.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH...DECREASING TO 2
                    WITH INCREASED SHOWER CHANCES LATE IN THE DAY.
MIXING HEIGHT.......1500 FT AGL EARLY INCREASING TO 10500 FT AGL
                    BY 2 PM MDT IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 22 TO 28 MPH.
SMOKE DISPERSAL.....GOOD TO EXCELLENT (40600-210600 KNOT-FT).

$$
FORECASTER...CARPENTER
REQUESTED BY...CHRIS OTTO
TYPE OF REQUEST...PRESCRIBED
.TAG 20110502.MARKI.01/CYS