000 FPUS73 KFSD 230009 NOWFSD SHORT TERM FORECAST NATIONAL WEATHER SERVICE SIOUX FALLS SD 609 PM CST FRI DEC 22 2006 SDZ038-039-053-054-059>061-230215- BEADLE-KINGSBURY-SANBORN-MINER-DAVISON-HANSON-MCCOOK- INCLUDING THE CITIES OF...HURON...DE SMET...ARLINGTON... LAKE PRESTON...WOONSOCKET...HOWARD...MITCHELL...ALEXANDRIA... EMERY...SALEM...CANISTOTA...BRIDGEWATER...MONTROSE 609 PM CST FRI DEC 22 2006 .NOW... AREAS OF DENSE FOG WERE FORMING ALONG AND NEAR THE JAMES RIVER THIS EVENING. THE VISIBILITY IN THE HURON AREA AND THE ARTESIAN AREA DROPPED RAPIDLY TO LESS THAN ONE QUARTER MILE BETWEEN 500 PM AND 600 PM. EXPECT THE POSSIBLILITY OF RAPID FOG FORMATION AND DRASTICALLY LOWER VISIBILITIES ACROSS THE AREA FOR THE NEXT FEW HOURS. MOTORISTS ESPECIALLY...SHOULD BE ALERT FOR RAPIDLY DEGRADING VISIBILITY ACROSS THE AREA THIS EVENING. SLOW DOWN AND DO NOT OVERDRIVE YOUR HEADLIGHTS. $$ DEMORIN