FNUS73 KUNR 221230
FWSUNR

SPOT FORECAST FOR BITTER RX...USFS
NATIONAL WEATHER SERVICE RAPID CITY SD
530 AM MST THU JAN 22 2009

FORECAST IS BASED ON IGNITION TIME OF 0900 MST ON JANUARY 22.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...
AN UPPER LEVEL RIDGE WILL BREAK DOWN TODAY...ALLOWING AN ARCTIC
COLD FRONT TO MOVE THROUGH THE FIRE AREA EARLY THIS EVENING. IT
WILL BRING A WIND SHIFT TO THE NORTH WITH SOME GUSTS FROM 20 TO 25
MPH. THERE WILL BE A SLIGHT CHANCE FOR LIGHT SNOW. ARCTIC AIR WILL
DOMINATE THE WEATHER FOR THE WEEKEND.

.TODAY...

SKY/WEATHER.........BECOMING MOSTLY CLOUDY.
TEMPERATURE.........40 AT IGNITION...MAX 51.
RH..................21 PERCENT AT IGNITION...MIN 16 PERCENT.
WIND (20 FT)........WINDS WEST AT 7 MPH AT IGNITION...BECOMING
                    NORTHWEST 7 TO 14 MPH IN THE AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 1600 FT AGL LATE IN THE MORNING.
TRANSPORT WINDS.....NORTHWEST 6 TO 14 MPH INCREASING TO 18 TO 24
                    MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR.

.TONIGHT...

SKY/WEATHER.........CLOUDY WITH A SLIGHT CHANCE OF SNOW.
TEMPERATURE.........MIN 16.
RH..................MAX 65 PERCENT.
WIND (20 FT)........NORTH WINDS 12 TO 17 MPH...GUSTS 20 TO 25 MPH.
CWR.................4 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH.
SMOKE DISPERSAL.....POOR.

.FRIDAY...

SKY/WEATHER.........CLOUDY WITH A CHANCE OF SNOW.
TEMPERATURE.........MAX 20.
RH..................MIN 47 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 13 TO 16 MPH.
CWR.................10 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 16 TO 21 MPH.
SMOKE DISPERSAL.....FAIR.

$$
FORECASTER...EH
REQUESTED BY...JAY KURTH
TYPE OF REQUEST...PRESCRIBED
.TAG 20090122.BITTE.02/UNR