FNUS75 KCYS 191739
FWSCYS

SPOT FORECAST FOR COTTONWOOD...NEBRASKA STATE
NATIONAL WEATHER SERVICE CHEYENNE WY
1139 AM MDT TUE JUN 19 2012

FORECAST IS BASED ON REQUEST TIME OF 1123 MDT ON JUNE 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HUMIDITY VALUES HAVE INCREASED OVER THE FIRE SITE AND WINDS HAVE
TURNED MORE NORTHWEST BEHIND THE PASSAGE OF A COLD FRONT LAST
NIGHT.  TEMPERATURES WILL ALSO BE COOLER TODAY THAN ON MONDAY.
SURFACE UPSLOPE WIND FLOW AND THE PASSAGE OF AN UPPER LEVEL
DISTURBANCE WILL PRODUCE MOSTLY CLOUDY SKIES AND SOME SHOWERS AND
STORMS TONIGHT AND INTO WEDNESDAY MORNING NEAR THE FIRE.  SURFACE
HIGH PRESSURE WILL MOVE OVER THE REGION FOR WEDNESDAY AND CREATE
A COOLER AND DRY DAY OVER THE FIRE.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (35-45 PERCENT).
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........25 PERCENT.
WIND (20 FT)........NORTHWEST TO NORTH 8 TO 14 MPH WITH GUSTS TO
                    20 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3700-5300 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 21 MPH.
SMOKE DISPERSAL.....EXCELLENT (65700-93800 KNOT-FT).

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (60-70 PERCENT). CHANCE OF
                    THUNDERSTORMS IN THE EVENING. CHANCE OF RAIN
                    SHOWERS THROUGH THE NIGHT. ISOLATED
                    THUNDERSTORMS AFTER MIDNIGHT.
MIN TEMPERATURE.....AROUND 51.
MAX HUMIDITY........70 PERCENT.
WIND (20 FT)........NORTH WINDS 6 TO 10 MPH IN THE EVENING BECOMING
                    DOWNSLOPE/DOWNVALLEY 4-7 MPH.
CWR.................30 PERCENT.
LAL.................2.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2500 FT AGL DECREASING TO 300 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....NORTH AROUND 12 MPH.
SMOKE DISPERSAL.....GOOD BECOMING POOR AFTER MIDNIGHT (33900 TO
                    2800 KNOT-FT).

.WEDNESDAY...

SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
                    MOSTLY SUNNY (25-35 PERCENT).
MAX TEMPERATURE.....AROUND 76.
MIN HUMIDITY........21 PERCENT.
WIND (20 FT)........NORTHWEST 8 TO 14 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5500 FT AGL INCREASING TO 9900 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.
SMOKE DISPERSAL.....POOR BECOMING EXCELLENT BY EARLY AFTERNOON
                    (47800-96500 KNOT-FT).

$$
FORECASTER...WEILAND
REQUESTED BY...WESTON BURCH
TYPE OF REQUEST...WILDFIRE
.TAG 20120619.COTTO.02/CYS