FNUS73 KUNR 271446
FWSUNR

SPOT FORECAST FOR OLD GROWTH PILE BURN...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE RAPID CITY SD
746 AM MST WED JAN 27 2010

FORECAST IS BASED ON IGNITION TIME OF 0730 MST ON JANUARY 27.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...
OVERCAST SKIES THIS MORNING WILL BECOME PARTLY CLOUDY BY THIS
AFTERNOON AS CANADIAN HIGH PRESSURE BUILDS OVER THE AREA. HIGH
TEMPERATURES WILL BE COOL...IN THE MID 20S. LOW TEMPERATURES
TONIGHT WILL DROP INTO THE SINGLE DIGITS AS SKIES CLEAR. HIGH
TEMPERATURES ON THURSDAY WILL BE SLIGHTLY WARMER AS WINDS SHIFT
FROM NORTHWEST TO SOUTHWEST OVER THE NEXT 36 HOURS.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY. BECOMING PARTLY CLOUDY THIS
                    AFTERNOON.
MAX TEMPERATURE.....AROUND 25.
MIN HUMIDITY........40-45 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 8 TO 12 MPH.
CWR.................00.
HAINES INDEX........2.
MIXING HEIGHT.......800 TO 1000 FT AGL.
TRANSPORT WINDS.....NORTHWEST 15 TO 25 MPH.
SMOKE DISPERSAL.....POOR.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....AROUND 5 ABOVE.
MAX HUMIDITY........80-90 PERCENT.
WIND (20 FT)........WEST WINDS 4 TO 6 MPH.
CWR.................00.
HAINES INDEX........2.
MIXING HEIGHT.......200 TO 400 FT AGL.
TRANSPORT WINDS.....WEST WINDS 5 TO 10 MPH.
SMOKE DISPERSAL.....POOR.

.THURSDAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....AROUND 32.
MIN HUMIDITY........35 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 8 MPH.
CWR.................00.
HAINES INDEX........2.
MIXING HEIGHT.......500 TO 800 FT AGL.
TRANSPORT WINDS.....SOUTHWEST WINDS 6 TO 10 MPH.
SMOKE DISPERSAL.....POOR.

$$
FORECASTER...SR
REQUESTED BY...AAREN NELLEN
TYPE OF REQUEST...PRESCRIBED
.TAG 20100127.OLDGR.01/UNR