833
FNUS73 KUNR 061611
FWSUNR
SPOT FORECAST FOR STEVENS RX...SD WILDLAND FIRE SUPPRESSION DIVISION
NATIONAL WEATHER SERVICE RAPID CITY SD
911 AM MST FRI NOV 6 2009
FORECAST IS BASED ON IGNITION TIME OF 1200 MST ON NOVEMBER 06.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.
DISCUSSION
VERY WARM AND DRY CONDITIONS ARE EXPECTED THIS
AFTERNOON. HIGH TEMPERATURES WILL CLIMB INTO THE LOW 70S BY EARLY
AFTERNOON WITH THE MINIMUM RELATIVE HUMIDITY FALLING TO 15 TO 20
PERCENT. WEST WINDS WILL GRADUALLY SHIFT TO THE NORTHWEST IN THE
AFTERNOON.
TODAY
SKY/WEATHER.........PARTLY SUNNY.
TEMPERATURE.........70 AT IGNITION...MAX 72.
RH..................19 PERCENT AT IGNITION...MIN 17 PERCENT.
WIND (20 FT)........WINDS WEST 10 TO 16 MPH SHIFTING TO THE
NORTHWEST 8 TO 14 MPH BY MID AFTERNOON. A
FEW GUSTS TO 20 MPH POSSIBLE.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1900 TO 2900 FT AGL.
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH.
SMOKE DISPERSAL.....FAIR INCREASING TO GOOD EARLY IN THE AFTERNOON.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY.
TEMPERATURE.........MIN 40.
RH..................MAX 70 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 10 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
MIXING HEIGHT.......100 TO 600 FT AGL.
TRANSPORT WINDS.....NORTHWEST 8 TO 14 MPH.
SMOKE DISPERSAL.....POOR.
FORECASTER...SR
REQUESTED BY...RAY BUBB DIVISION CHIEF
TYPE OF REQUEST...PRESCRIBED
.TAG 20091106.STEVE.02/UNR
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