MESOSCALE DISCUSSION 0373
   NWS STORM PREDICTION CENTER NORMAN OK
   0133 PM CST FRI APR 04 2003
   
   AREAS AFFECTED...NE IA/SWRN AND SCNTRL WI
   
   CONCERNING...FREEZING RAIN 
   
   VALID 041933Z - 050130Z
   
   ...FREEZING RAIN WILL MOVE ACROSS NE IA AND SRN WI THIS
   AFTERNOON...WITH SIGNIFICANT ACCUMULATIONS POSSIBLE...
   
   LATEST RADAR IMAGERY SHOWS AN AREA OF CONVECTIVE PRECIPITATION
   MOVING ACROSS NORTHEAST IA...INTO EXTREME SW WI. AS AN UPPER WAVE
   MOVES TOWARD THE AREA FROM THE SW...LARGE SCALE FORCING WILL
   CONTRIBUTE TO WIDESPREAD PRECIPITATION ACROSS THE AREA. THE SFC
   FREEZING LINE CURRENTLY EXTENDS FROM WATERLOO IA TO JUST
   NORTHEAST OF MADISON WI. MUCH OF THE PRECIPITATION THAT FALLS
   ACROSS SRN WI WILL BE FREEZING RAIN THIS AFTERNOON. TEMPERATURES
   IN EXTREME SRN WI AND EAST TOWARD MKE SHOULD REMAIN IN THE MID
   30S...SO THE MAJORITY OF THE PRECIPITATION WILL BE RAIN. 
   
   POINT FORECAST SOUNDINGS FROM THE RUC AND ETA BOTH INDICATE A
   WARM MELTING LAYER BETWEEN 850-700MB AND STRONG WAA THIS
   AFTERNOON. MID LAYER COOLING WILL EVENTUALLY CHANGE THE
   PRECIPITATION OVER TO ALL SNOW LATER TONIGHT. ETA QPF FORECASTS
   SUGGESTS BETWEEN 0.1-0.2" OF PRECIPITATION THROUGH 05/0000Z...AND
   MUCH OF THIS PRECIPITATION IS EXPECTED TO FALL AS FREEZING RAIN
   IN THE DISCUSSION AREA.  
   
   ..TAYLOR.. 04/04/2003
   
   
   ATTN...WFO...GRB...MKX...DVN...ARX...
   
   43049185 43699082 44178889 43868778 43138830 42569092
   42679184