FNUS73 KUNR 202037 CCA
FWSUNR

SPOT FORECAST FOR BITTER RX...US FOREST SERVICE
NATIONAL WEATHER SERVICE RAPID CITY SD
133 PM MST TUE JAN 20 2009

FORECAST IS BASED ON IGNITION TIME OF 1000 MST ON JANUARY 21.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...AN UPPER LEVEL RIDGE OF HIGH PRESSURE WILL DOMINATE
THE WEATHER PATTERN ON WEDNESDAY. HIGH TEMPERATURES WILL BE WELL
ABOVE AVERAGE...WITH THE AFTERNOON MINIMUM RELATIVE HUMIDITY FALLING
INTO THE 10 TO 15 PERCENT RANGE. WINDS WILL GENERALLY BE OUT OF THE
NORTH AT 8 TO 12 MPH...WITH GUSTS TO 20 MPH NEAR RIDGETOPS IN THE
AFTERNOON.

TEMPERATURES WILL COOL A BIT ON THURSDAY...WITH A HIGHS IN THE 40S
EXPECTED. THE AFTERNOON MINIMUM RELATIVE HUMIDITY WILL RANGE FROM
25 TO 30 PERCENT. EVEN COOLER TEMPERATURES AND SNOW ARE EXPECTED
FOR FRIDAY.

.WEDNESDAY...

SKY/WEATHER.........SUNNY.
TEMPERATURE.........MAX 61-64.
RH..................MIN 10-15 PERCENT.
WIND (20 FT)........NORTH WINDS 8 TO 12 MPH WITH GUSTS TO 20 MPH
                    ALONG RIDGETOPS IN THE AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1400 TO 1600 FT AGL.
TRANSPORT WINDS.....NORTHWEST AT 15 TO 25 MPH.
SMOKE DISPERSAL.....FAIR.

.WEDNESDAY NIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
TEMPERATURE.........MIN 23-25.
RH..................MAX 57-60 PERCENT.
WIND (20 FT)........WEST WINDS 2 TO 5 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......100 TO 300 FT AGL.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR.

$$
FORECASTER...SR
REQUESTED BY...MARK HENRIGHT
TYPE OF REQUEST...PRESCRIBED
.TAG 20090121.BITTE.02/UNR