FNUS73 KUNR 121140
FWSUNR

SPOT FORECAST FOR PCK RX...SD-BKF
NATIONAL WEATHER SERVICE RAPID CITY SD
540 AM MDT TUE MAY 12 2009

IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...
A STRONG UPPER LEVEL DISTURBANCE WILL CROSS THE NORTHERN PLAINS TONIGHT.
THIS WILL BRING SCATTERED SHOWERS AND THUNDERSTORMS THIS AFTERNOON
THROUGH TONIGHT. A COLD FRONT WILL SLIDE THROUGH THE AREA WEDNESDAY
MORNING...WITH STRONG NORTHWEST WINDS DURING THE DAY.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY. SHOWERS AND THUNDERSTORMS LIKELY
                    IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........37 PERCENT.
WIND (20 FT)........VARIABLE 3 TO 7 MPH SHIFTING TO THE EAST
                    5 TO 9 MPH IN THE AFTERNOON.
CWR.................38 PERCENT.
LAL.................4.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......7400 TO 8400 FT AGL.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
SMOKE DISPERSAL.....VERY GOOD.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. SHOWERS AND THUNDERSTORMS LIKELY
                    IN THE EVENING...THEN CHANCE OF RAIN SHOWERS
                    AFTER MIDNIGHT.
MIN TEMPERATURE.....AROUND 34.
MAX HUMIDITY........82 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 18 MPH.
CWR.................40 PERCENT.
LAL.................4.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1300 TO 1800 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 23 MPH.
SMOKE DISPERSAL.....POOR.

$$
FORECASTER...NWS
REQUESTED BY...PCK IC
TYPE OF REQUEST...PRESCRIBED
.TAG 20090512.PCKRX.01/UNR