835
FNUS75 KCYS 130006
FWSCYS
SPOT FORECAST FOR SOUTH ARISTOCRAT...GREAT PLAINS
NATIONAL WEATHER SERVICE CHEYENNE WY
606 PM MDT MON AUG 12 2013
FORECAST IS BASED ON REQUEST TIME OF 1750 MDT ON AUGUST 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
.DISCUSSION...
CLOUDY SKIES WILL PREVAIL THIS EVENING WITH SCATTERED THUNDERSTORMS
ACROSS NORTHERN SIOUX COUNTY PUTTING OUT OUTFLOW BOUNDARIES AND
POSSIBLY SPARKING ISOLATED THUNDERSTORMS IN THE BURN AREA THROUGH
9 PM. PREVAILING WINDS WILL BE FROM THE SOUTHEAST AT 5 TO 10 MPH
WITH GUSTS TO 20 MPH...WITH GUSTY AND ERRATIC WIND GUSTS TO 40 MPH
NEAR ANY THUNDERSTORMS.
.TONIGHT...
SKY/WEATHER.........CLOUDY (80-90 PERCENT). SCATTERED THUNDERSTORMS
IN THE EVENING. SCATTERED SHOWERS THROUGH THE
NIGHT. PATCHY FOG AFTER MIDNIGHT.
MIN TEMPERATURE.....TEMPERATURES FALLING FROM THE UPPER 70S AT
6 PM...TO LOWER 70S AT 9 PM TO UPPER 60S AT
MIDNIGHT.
MAX HUMIDITY........90 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 6 TO 9 MPH UNTIL EARLY MORNING
BECOMING SOUTH 4-7 MPH. GUSTS UP TO 15 MPH.
CWR.................50 PERCENT.
LAL.................3.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4300 FT AGL DECREASING TO 200 FT AGL AFTER
MIDNIGHT.
TRANSPORT WINDS.....SOUTHEAST AROUND 12 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (1400-50000 KNOT-FT).
$$
FORECASTER...RUBIN
REQUESTED BY...CHADRON FIRE CHIEF
TYPE OF REQUEST...WILDFIRE
.TAG 20130812.SOUTH.01/CYS