163 FXUS63 KUNR 051700 AAA AFDRAP AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY NATIONAL WEATHER SERVICE RAPID CITY SD 1000 AM MST WED FEB 5 2003 SOME CONVECTIVE SHSN DEVELOPING THIS MRNG IN AN UNSTABLE ATMOSPHERE. HAVE HAD REPORT OF A QUICK INCH AROUND HOOVER...AND BASED ON FCST SOUNDINGS...THIS ACTIVITY SHOULD CONTINUE THRU MUCH OF THE AFTN ACROSS AREA. COLD FNT STILL ON TRACK TO ENTER NRN CWA AROUND 18Z-19Z AND MOVE S THRU AREA INTO EARLY EVENING. GD FRONTOGENESIS AND LIFT WITH FNT. WITH SNOW EXPECTED ALL DAY...JUST WORDED ZNS WITH PERIODS OF SNOW MOST AREAS WITH JUST SOME SCT SHSN ACROSS THE FAR S. RAISED SNOWFALL AMOUNTS FOR THIS AFTN AN INCH OR SO WITH THE CONVECTIVE NATURE OF SNOW CURRENTLY OCCURRING AND ANOTHER INCH OR SO BEHIND COLD FNT. .UNR...NONE. $$ JMG