Storm Prediction Center Mesoscale Discussion 55

   Mesoscale Discussion 0055
   NWS Storm Prediction Center Norman OK
   0839 AM CST Sun Jan 25 2026

   Areas affected...Eastern West Virginia and Virginia into the
   DelMarva.

   Concerning...Winter mixed precipitation 

   Valid 251439Z - 251745Z

   SUMMARY...Snow has mostly transitioned to sleet from eastern West
   Virginia, across Virginia, and into the DelMarva.

   DISCUSSION...Strong warm air advection has supported moderate
   precipitation rates through the morning across West
   Virginia/Virginia and into the Mid-Atlantic. The 12A IAD RAOB showed
   a warm nose slightly below freezing at around 750mb with very strong
   (80 knot) southwesterly flow at the altitude of the warm nose. As
   such, this warm nose is quickly warming/advecting north and surface
   observations of sleet across northeast Virginia and Maryland confirm
   this transition. Any areas that remain snow this morning across
   Virginia and Maryland will likely transition to sleet within the
   next 1 to 2 hours given this strong warm air advection aloft.

   Expect precipitation type to remain sleet even as this warm nose
   continues to warm given the very cold temperatures at the top of the
   boundary layer (-15C) at the KIAD, KRNK, and KGSO 12Z RAOBs. The
   moderate precipitation will continue with sleet accumulation of 0.1
   to 0.2 inches per hour expected.

   ..Bentley.. 01/25/2026

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

   ATTN...WFO...PHI...AKQ...LWX...RNK...PBZ...RLX...

   LAT...LON   38578068 39447911 39657676 39407524 39077473 38657469
               36957632 36747696 36607868 36797956 37218037 37978054
               38578068