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Mesoscale Discussion 83
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   MESOSCALE DISCUSSION 0083
   NWS STORM PREDICTION CENTER NORMAN OK
   0219 AM CST SAT FEB 21 2015

   AREAS AFFECTED...CNTRL IND EWD INTO CNTRL OH

   CONCERNING...HEAVY SNOW 

   VALID 210819Z - 211215Z

   SUMMARY...INTERMITTENT HEAVY SNOWFALL RATES AROUND INCH PER HOUR ARE
   LIKELY ALONG THE I-70 CORRIDOR FROM CNTRL IND EWD INTO W-CNTRL OH
   THROUGH 12 UTC.

   DISCUSSION...RADAR MOSAIC AT 0815 UTC SHOWS A BROAD SHIELD OF
   MODERATE PRECIPITATION OVER THE OH VALLEY REGION.  SURFACE
   OBSERVATION AND NSSL PING REPORTS OVER THE PAST HOUR HAVE SHOWN SNOW
   ACROSS THE IND-WRN OH I-70 CORRIDOR WITH MODERATE TO INTERMITTENT
   HEAVY PRECIPITATION RATES.  A STRONG LOW-LEVEL WAA REGIME ATOP A CP
   AIR MASS WILL PROMOTE AMPLE LARGE-SCALE LIFT ACROSS THE OH VALLEY
   THROUGH 12Z.  FORECAST SOUNDINGS OVER THIS REGION SHOW TROPOSPHERIC
   PROFILES WILL GENERALLY REMAIN COOL ENOUGH TO SUPPORT MAINLY SNOW AS
   THE PREFERRED P-TYPE WITH SNOW/SLEET MIX POSSIBLE IN THE SRN PORTION
   OF THE DISCUSSION AREA TOWARDS 12 UTC.

   ..SMITH.. 02/21/2015


   ATTN...WFO...ILN...IND...

   LAT...LON   40258377 40068331 39858328 39638355 39348685 39548723
               39828726 40118673 40258377 

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Page last modified: February 21, 2015
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