FNUS75 KCYS 100125
FWSCYS

SPOT FORECAST FOR REGION 23 COMPLEX...NE-NES
NATIONAL WEATHER SERVICE CHEYENNE WY
725 PM MDT SUN SEP 9 2012

FORECAST IS BASED ON REQUEST TIME OF 1910 MDT ON SEPTEMBER 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING...

.DISCUSSION...
A BROAD AREA OF HIGH PRESSURE IN THE UPPER ATMOSPHERE WILL BE
CENTERED OVER THE PLAINS THROUGH MONDAY WITH A SURFACE TROUGH NEAR
THE WESTERN NEBRASKA BORDER. THE RESULT WILL BE GUSTY WINDS
THROUGH EARLY MONDAY MORNING OVER THE FIRE SITE WITH TEMPERATURES
NOT AS COOL. THE RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM.
MONDAY WILL BE HOT AND DRY...WITH LIGHTER SURFACE WINDS AND AN
INCREASE IN MID AND HIGH LEVEL CLOUDS. BIG CHANGE IN WEATHER
STILL EXPECTED OVER THE FIRE SITE FOR TUESDAY THROUGH THURSDAY
WITH MUCH COOLER TEMPERATURES AND A CHANCE OF SHOWERS.

.TONIGHT...

SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....AROUND 58.
MAX HUMIDITY........43 PERCENT.
WIND (20 FT)........SOUTH WINDS 15 TO 22 MPH WITH GUSTS TO 34 MPH
                    SHIFTING TO THE SOUTHWEST 11 TO 15 MPH BY 3 AM.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3700 FT AGL DECREASING TO 200 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....SOUTH AROUND 25 MPH.
SMOKE DISPERSAL.....BECOMING POOR (2200 KNOT-FT) AFTER MIDNIGHT.

.MONDAY...

SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....AROUND 96.
MIN HUMIDITY........10 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 10 TO 14 MPH WITH GUSTS UP TO
                    20 MPH BY THE LATE MORNING.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 13300 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
SMOKE DISPERSAL.....BECOMING EXCELLENT (143300 KNOT-FT) BY MIDDAY.

$$
FORECASTER...WEILAND
REQUESTED BY...TERRY MCSHANE
TYPE OF REQUEST...WILDFIRE
.TAG 20120909.REGIO.02/CYS