FNUS73 KUNR 101303
FWSUNR

SPOT FORECAST FOR PRAIRIE UNIT A...US FOREST SERVICE
NATIONAL WEATHER SERVICE RAPID CITY SD
603 AM MST THU JAN 10 2013

FORECAST IS BASED ON IGNITION TIME OF 1000 MST ON JANUARY 10.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...WINDS ARE EXPECTED TO REMAIN FROM A WEST/SOUTHWEST
DIRECTION MUCH OF THE DAY AND WILL BE GUSTY AT TIMES. THESE DRY
DOWNSLOPE WINDS WILL ALSO KEEP RELATIVE HUMIDITIES QUITE LOW MUCH
OF THE DAY...AROUND 15 PERCENT. A STRONG COLD FRONT WILL MOVE
THROUGH LATE TONIGHT AND BRING SNOW AND GUSTY NORTHWEST WINDS TO
THE AREA ON FRIDAY.

.TODAY...

SKY/WEATHER.........BECOMING MOSTLY CLOUDY.
TEMPERATURE.........55 AT IGNITION...MAX 60.
RH..................15 PERCENT AT IGNITION...MIN 13 PERCENT.
WIND (20 FT)........WEST-SOUTHWEST AT 15 TO 30 MPH.
CWR.................0 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......RISING TO 1500 FT AGL BY LATE MORNING.
TRANSPORT WINDS.....WEST-SOUTHWEST 20 TO 32 MPH.
SMOKE DISPERSAL.....POOR EARLY...THEN FAIR LATE MORNING THROUGH
                    MID AFTERNOON.

.TONIGHT...

SKY/WEATHER.........CLOUDY. SLIGHT CHANCE OF SNOW AFTER MIDNIGHT.
TEMPERATURE.........MIN 19.
RH..................MAX 84 PERCENT.
WIND (20 FT)........NORTH WINDS 8 TO 12 MPH.
CWR.................0 PERCENT INCREASING TO 15 PERCENT AFTER
                    MIDNIGHT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......800 TO 1300 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 20 MPH BECOMING NORTHWEST 5 TO 10
                    MPH EARLY IN THE EVENING.
SMOKE DISPERSAL.....POOR.

.FRIDAY...

SKY/WEATHER.........CLOUDY. SNOW AND AREAS OF BLOWING SNOW.
TEMPERATURE.........MAX 19.
RH..................MIN 60 PERCENT.
WIND (20 FT)........NORTHWEST 20 TO 25 MPH WITH GUSTS TO AROUND
                    35 MPH.
CWR.................80 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......600 TO 1200 FT AGL.
TRANSPORT WINDS.....NORTHWEST 25 TO 40 MPH.
SMOKE DISPERSAL.....POOR.

$$
FORECASTER...JJ
REQUESTED BY...STOVER
TYPE OF REQUEST...PRESCRIBED
.TAG 20130110.PRAIR.02/UNR