Mesoscale Discussion 0076
   NWS Storm Prediction Center Norman OK
   0902 AM CST Sat Feb 13 2021

   Areas affected...portions of the Mid-Atlantic

   Concerning...Freezing rain 

   Valid 131502Z - 132100Z

   SUMMARY...Areas of freezing rain and occasional sleet will impact
   much of the Mid-Atlantic through early afternoon.

   DISCUSSION...A broad area of ascent/isentropic lift atop a shallow
   cold airmass continues to contribute to widespread freezing rain at
   this time.  The freezing rain is reportedly mixing with sleet at
   times across the DC/Baltimore MD areas, though a transition to more
   freezing rain should occur in that area over time as models indicate
   warm advection in the H7-H85 layer.  Precipitation rates may
   approach 0.05 inch/hour at times beneath heavier precipitation
   bands.  The general regime should persist through early afternoon,
   with a general northeastward expansion of the precipitation shield
   toward Delaware/southern New Jersey and the Philadelphia area over
   the next couple hours or so.  Several models/CAMs shift
   precipitation out of much of Virginia and western Maryland around
   21Z.

   ..Cook.. 02/13/2021

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...PHI...AKQ...CTP...LWX...RNK...

   LAT...LON   39087815 39347734 39967564 40067489 39757443 39527439
               39407450 38747502 37587660 36827786 36617874 36767934
               36957986 37308004 37827988 39087815