MESOSCALE DISCUSSION 0036
   NWS STORM PREDICTION CENTER NORMAN OK
   0212 PM CST WED JAN 19 2011
   
   AREAS AFFECTED...NERN KS AND NWRN MO
   
   CONCERNING...HEAVY SNOW 
   
   VALID 192012Z - 200115Z
   
   BANDS OF HEAVY SNOWFALL WILL INTENSIFY ACROSS NERN KS AND NWRN MO
   THIS AFTERNOON INTO EARLY EVENING...WITH RATES OF 1 TO LOCALLY 2
   INCHES PER HOUR EXPECTED. THE HEAVY SNOW WILL IMPACT THE KANSAS CITY
   METRO AREA BY 00Z.
   
   STRONG DEEP-LAYER ASCENT CONTINUES TO OVERSPREAD THE CENTRAL PLAINS
   AHEAD OF A VIGOROUS SHORTWAVE TROUGH DIVING SEWD ACROSS THE WRN
   CONUS. A LLJ AHEAD OF THE TROUGH IS CONTRIBUTING TO ISENTROPIC
   UPGLIDE ATOP THE COLD AIR MASS ENVELOPING THE NORTHERN PLAINS AND
   UPPER MIDWEST. CONVERGENCE IN THE EXIT REGION OF THIS LLJ...ALONG
   WITH ISENTROPIC UPGLIDE AND INCREASING LARGE-SCALE ASCENT...WILL
   RESULT IN INCREASING SNOWFALL RATES ACROSS THE DISCUSSION AREA THIS
   AFTERNOON.
   
   ADDITIONALLY...INCREASING LOW/MID-LEVEL FRONTOGENESIS IS EXPECTED TO
   OCCUR INVOF THE INTERSTATE 70 CORRIDOR BY EARLY EVENING AIDED BY
   850-MB DEFORMATION. THIS WILL FAVOR THE DEVELOPMENT OF SNOW
   BANDING...ESPECIALLY ACROSS THE KANSAS CITY METRO AREA...WHERE
   MODELS INDICATE THE DEVELOPMENT OF SLANTWISE INSTABILITY LATER THIS
   AFTERNOON. WITH FORECAST SOUNDINGS INDICATING STRONG ASCENT THROUGH
   A SATURATED DENDRITIC GROWTH ZONE...EFFICIENT SNOW GROWTH IS
   ANTICIPATED...WITH RATES EXPECTED TO REACH 1 TO LOCALLY 2 INCHES PER
   HOUR IN THE SNOW BANDS.
   
   ..COHEN/GARNER.. 01/19/2011
   
   
   ATTN...WFO...SGF...EAX...TOP...
   
   LAT...LON   38749560 39359595 39669585 39989527 39879380 39389287
               38579293 38319361 38359419 38449504 38749560