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Mesoscale Discussion 87
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   MESOSCALE DISCUSSION 0087
   NWS STORM PREDICTION CENTER NORMAN OK
   0138 PM CST SAT FEB 21 2015

   AREAS AFFECTED...NCNTRL THROUGH CNTRL CO

   CONCERNING...HEAVY SNOW 

   VALID 211938Z - 220045Z

   SUMMARY...SNOW IS EXPECTED TO INCREASE ALONG THE FRONT RANGE OF
   NCNTRL TO CNTRL COLORADO WITH RATES LOCALLY UP TO 1 INCH PER HOUR
   POSSIBLE LATER THIS AFTERNOON INTO EARLY EVENING.

   DISCUSSION...EARLY THIS AFTERNOON A COLD FRONT EXTENDS FROM THE
   GREAT LAKES AREA SWWD TROUGH NRN KS INTO NERN CO. THE WRN EXTENT OF
   THIS BOUNDARY IS SURGING SWD...AND NELY WINDS IN THE POST FRONTAL
   ZONE WILL DEVELOP ACROSS NERN AND NCNTRL CO THIS AFTERNOON. THE
   INCREASING NELY WINDS WILL AUGMENT THE UPSLOPE COMPONENT ALONG EWD
   FACING SLOPES OF THE FRONT RANGE AND FOOTHILLS. CONCURRENTLY A ZONE
   OF MID-LEVEL ASCENT NORTH OF AN UPPER JET MAXIMUM IS SPREADING OVER
   THE FRONT RANGE AND WILL ACT IN CONCERT WITH UPSLOPE WINDS TO
   AUGMENT SNOWFALL RATES. SOME CONVECTIVE ENHANCEMENT IS ALSO LIKELY
   AS STEEP MID-LEVEL LAPSE RATES SPREAD ACROSS THE REGION.

   ..DIAL.. 02/21/2015


   ATTN...WFO...PUB...BOU...CYS...

   LAT...LON   39370565 40290589 41200562 41100485 40410437 39780379
               39110378 38760431 38930511 39370565 

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