FNUS73 KUNR 291626
FWSUNR

SPOT FORECAST FOR JDC...SD-RBA
NATIONAL WEATHER SERVICE RAPID CITY SD
1026 AM MDT MON MAR 29 2010

FORECAST IS BASED ON IGNITION TIME OF 1500 CDT ON MARCH 29.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...
WARM TEMPERATURES...LOW RELATIVE HUMIDITIES...AND GUSTY SOUTHWEST
THIS AFTERNOON HAS PUT THE GRASSLAND FIRE DANGER INDEX IN THE
EXTREME CATEGORY. HIGHS WILL BE IN THE MID 70S WITH MINIMUM RELATIVE
HUMIDITIES AROUND 15 PERCENT. SOUTHWEST WINDS OF 10 TO 15 MPH CAN BE
EXPECTED THIS AFTERNOON.

TEMPERATURES WILL BE WARMER ON TUESDAY WITH HIGHS NEAR 80 AND
MINIMUM RELATIVE HUMIDITIES OF 15 TO 20 PERCENT. WINDS WILL STILL
REMAIN GUSTY OUT OF THE SOUTHWEST.

.REST OF TODAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....75.
MIN HUMIDITY........16 PERCENT.
WIND (20 FT)........SOUTH WINDS 10 TO 15 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......7000 TO 8000 FT AGL.
TRANSPORT WINDS.....WEST 18 TO 23 MPH.
SMOKE DISPERSAL.....EXCELLENT.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....46.
MAX HUMIDITY........63 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 9 TO 17 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......200 TO 700 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 23 MPH.
SMOKE DISPERSAL.....VERY GOOD DECREASING TO POOR.

$$
FORECASTER...CALDERON
REQUESTED BY...STEVEN IPSWITCH
TYPE OF REQUEST...PRESCRIBED
.TAG 20100329.JDC__.01/UNR