FNUS75 KCYS 282343
FWSCYS

SPOT FORECAST FOR PASTURE 20 RX...USFS NNF
NATIONAL WEATHER SERVICE CHEYENNE WY
543 PM MDT MON SEP 28 2009

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

.DISCUSSION...
A LARGE AREA OF HIGH PRESSURE WILL SHIFT EAST THROUGH THE AREA
TONIGHT AND EAST OF THE AREA BY TUESDAY. AS A RESULT CLEAR SKIES
AND DRY CONDITIONS WILL PERSIST AT THE BURN SITE THROUGH TUESDAY.
LIGHT SOUTHEAST WINDS CURRENTLY AT THE SITE WILL INCREASE THROUGH
THE OVERNIGHT...AND EVEN FURTHER DURING THE DAY ON TUESDAY. IN
FACT SOUTH/SOUTHEAST WINDS WILL GUST IN EXCESS OF 25 TO 30 MPH ON
TUESDAY AFTERNOON. TEMPERATURES WILL BE QUITE A BIT WARMER AS
WELL...WITH HIGH TEMPERATURES REACHING INTO THE UPPER 70S. THE
CORRESPONDING RELATIVE HUMIDITIES WILL BE LOWER THAN
MONDAYS...BOTTOMING OUT IN THE LOWER TEENS DURING THE AFTERNOON
HOURS.

.TONIGHT...

SKY/WEATHER.........CLEAR (0-5 PERCENT).
MIN TEMPERATURE.....37-40.
MAX HUMIDITY........60-70 PERCENT.
WIND (20 FT)........SOUTHEAST AT 5 TO 10 MPH...INCREASING TO
                    10 TO 15 MPH AFTER MIDNIGHT.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......4200 FT AGL DECREASING TO 400 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.
SMOKE DISPERSAL.....GOOD BECOMING POOR (2600-51000 KNOT-FT).

.TUESDAY...

SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....76-80.
MIN HUMIDITY........12-16 PERCENT.
WIND (20 FT)........SOUTH/SOUTHEAST AT 10 TO 15 MPH UNTIL 1000...
                    THEN SOUTH AT 20 TO 25 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.......900 FT AGL INCREASING TO 3800 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTH 15 TO 20 MPH.
SMOKE DISPERSAL.....FAIR BECOMING EXCELLENT (14100-65300 KNOT-FT).

$$

FORECASTER...HAHN
REQUESTED BY...CLINT PHILLIPS
TYPE OF REQUEST...PRESCRIBED
.TAG 20090929.PASTU.01/CYS