FNUS75 KCYS 081317
FWSCYS

SPOT FORECAST FOR REGION 23 COMPLEX...NES/NBF
NATIONAL WEATHER SERVICE CHEYENNE WY
717 AM MDT SAT SEP 8 2012

FORECAST IS BASED ON REQUEST TIME OF 0500 MDT ON SEPTEMBER 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...FIRE WEATHER WATCH IN EFFECT FROM 11 AM TO 8 PM SUNDAY...

.DISCUSSION...
DRY AND WARMER CONDITIONS ARE EXPECTED TODAY THROUGH SUNDAY. LIGHT
WINDS THIS MORNING WILL TURN GRADUALLY TO A NORTH TO NORTHEAST
DIRECTION EARLY THIS AFTERNOON AS A WEAK FRONT PASSES ACROSS. MORE
ADVERSE CONDITIONS ARE POSSIBLE OVER THE AREA SUNDAY AS WINDS
BECOME SOUTHERLY AND INCREASE BY LATE SUNDAY MORNING...BEING
RATHER GUSTY SUNDAY AFTERNOON INTO SUNDAY EVENING. RELATIVE
HUMIDITIES WILL BE QUITE LOW AND RESULT IN POTENTIALLY RAPID
SPREADING CONDITIONS.


.TODAY...

SKY/WEATHER.........SUNNY (0-5 PERCENT).
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........20 PERCENT.
WIND (20 FT)........SOUTHWEST 2 TO 5 MPH BECOMING NORTH AROUND 10
                    MPH BY 1 PM.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3000 FT AGL INCREASING TO 6200 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....NORTHWEST AROUND 14 MPH.
SMOKE DISPERSAL.....BECOMING EXCELLENT (86200 KNOT-FT).

.TONIGHT...

SKY/WEATHER.........CLEAR (0-5 PERCENT).
MIN TEMPERATURE.....AROUND 47.
MAX HUMIDITY........58 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 8 MPH IN THE EVENING BECOMING
                    LIGHT...THEN BECOMING SOUTH 5 TO 6 MPH EARLY IN
                    THE MORNING.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3000 FT AGL DECREASING TO 100 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....EAST AROUND 8 MPH.
SMOKE DISPERSAL.....POOR AFTER MINDINGHT (700 KNOT-FT).

.SUNDAY...

SKY/WEATHER.........SUNNY (0-5 PERCENT).
MAX TEMPERATURE.....AROUND 87.
MIN HUMIDITY........14 PERCENT.
WIND (20 FT)........SOUTH WINDS 8 TO 15 MPH. GUSTS UP TO 25 MPH IN
                    THE LATE MORNING AND AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2800 FT AGL INCREASING TO 8500 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTH AROUND 16 MPH.
SMOKE DISPERSAL.....EXCELLENT IN THE AFTERNOON (160800 KNOT-FT).

$$
FORECASTER...LIEBL
REQUESTED BY...TERRY MCSHANE
TYPE OF REQUEST...WILDFIRE
.TAG 20120908.REGIO.01/CYS