MESOSCALE DISCUSSION 0076
   NWS STORM PREDICTION CENTER NORMAN OK
   0352 PM CST WED FEB 04 2004
   
   AREAS AFFECTED...NERN OK / NRN AR / SRN MO
   
   CONCERNING...HEAVY SNOW 
   
   VALID 042152Z - 050145Z
   
   HEAVY SNOW -- WITH RATES IN EXCESS OF 1"/HR IN SOME AREAS -- IS
   EXPECTED ACROSS PARTS OF NERN OK...NRN AR...AND SRN MO OVER THE NEXT
   FEW HOURS.
   
   WARM ADVECTION REGIME CONTINUES ACROSS THE OZARKS REGION AHEAD OF
   MAIN UPPER TROUGH / LOW CENTERED OVER THE ERN CO ATTM. HIGH THETA-E
   AIR ADVECTING NWWD ON 30 TO 40 KT SELY LOW-LEVEL JET CONTINUES TO
   ASCEND OVER COOL SURFACE AIRMASS...WHERE GENERALLY ELY LOW-LEVEL
   FLOW IS MAINTAINING TEMPERATURES IN THE 30S.
   
   DESPITE THE WARM ADVECTION...MELTING-INDUCED COOLING WITHIN THE
   LOW-LEVEL AIRMASS APPEARS TO BE MAINTAINING A FAIRLY PERSISTENT RAIN
   / SNOW LINE ACROSS ERN OK / NWRN AR.  GIVEN HEAVY ONGOING
   PRECIPITATION...COOLING SHOULD BE SUFFICIENT TO PERMIT A
   CONTINUATION OF THE FROZEN PRECIPITATION.  WITH WARM ADVECTION / QG
   FORCING FORECAST TO PERSIST ACROSS THIS AREA...EXPECT SEVERAL HOURS
   OF HEAVY SNOW.
   
   ..GOSS.. 02/04/2004
   
   
   ATTN...WFO...PAH...MEG...LSX...LZK...SGF...TSA...
   
   37649351 37779185 37539094 36389092 35759218 35739470
   35749574 36919464