FNUS73 KUNR 201724
FWSUNR

SPOT FORECAST FOR MYRTLE...STATE
NATIONAL WEATHER SERVICE RAPID CITY SD
1124 AM MDT FRI JUL 20 2012

FORECAST IS BASED ON REQUEST TIME OF 1042 MDT ON JULY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...HOT AND DRY WEATHER WILL CONTINUE TODAY AND
SATURDAY. WINDS FORECAST WILL BE TRICKY TODAY WITH THE PRESENCE OF
SMALL-SCALE BOUNDARIES. IF THESE BOUNDARIES REACH THE FIRE...THE
RESULT WOULD BE SHORT-TERM CHANGES IN WIND SPEED AND DIRECTION.
OTHERWISE AT THIS TIME IT APPEARS WINDS WILL GRADUALLY SHIFT TO
THE EAST EARLY THIS AFTERNOON...THEN POSSIBLY SHIFT MORE
SOUTHEASTERLY THROUGH THE AFTERNOON. WINDS WILL WEAKEN EARLY THIS
EVENING BECOME MORE TERRAIN INFLUENCED OVERNIGHT. THERE IS A
CHANCE FOR THUNDERSTORMS THIS AFTERNOON AND EVENING. SOME
THUNDERSTORMS MAY PRODUCE HAIL...VARIABLE GUSTY WINDS...AND DRY
LIGHTNING.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY. SCATTERED SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 101.
MIN HUMIDITY........8 PERCENT.
WIND (20 FT)........NORTH TO NORTHEAST WINDS 5 TO 9 MPH...POSSIBLY
                    SHIFTING TO THE EAST TO SOUTHEAST 8 TO 13 MPH
                    IN THE AFTERNOON.
CWR.................15 PERCENT.
LAL.................3.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......12500 TO 13500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 25 MPH.
SMOKE DISPERSAL.....EXCELLENT.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
                    THUNDERSTORMS.
MIN TEMPERATURE.....AROUND 66.
MAX HUMIDITY........65 PERCENT.
WIND (20 FT)........BECOMING LIGHT/TERRAIN INFLUENCED.
CWR.................9 PERCENT.
LAL.................2.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......500 TO 1000 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 18 MPH.
SMOKE DISPERSAL.....POOR.

.SATURDAY...

SKY/WEATHER.........MOSTLY SUNNY. CHANCE OF SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 89.
MIN HUMIDITY........33 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 6 MPH.
CWR.................18 PERCENT.
LAL.................3.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......10000 TO 11000 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 8 MPH.
SMOKE DISPERSAL.....VERY GOOD.

$$
FORECASTER...CALDERON
REQUESTED BY...IC
TYPE OF REQUEST...WILDFIRE
.TAG 20120720.MYRTL.01/UNR