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Mesoscale Discussion 168
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   MESOSCALE DISCUSSION 0168
   NWS STORM PREDICTION CENTER NORMAN OK
   0505 AM CST MON MAR 03 2014

   AREAS AFFECTED...ERN WV...VA...MD...DE...SRN NJ

   CONCERNING...WINTER MIXED PRECIPITATION 

   VALID 031105Z - 031700Z

   SUMMARY...AREAS OF HEAVY SNOW AND SLEET WILL DEVELOP EWD OUT OF KY
   AND WV INTO VA...MD...DE AND SRN NJ LATER THIS MORNING. RAIN WILL
   ALSO CHANGE BRIEFLY TO FREEZING RAIN THEN SLEET AND SNOW ACROSS
   CNTRL VA.

   DISCUSSION...AN AREA OF MODERATE TO HEAVY MIXED-PRECIPITATION
   STRETCHED FROM ERN KY EWD INTO SRN NJ AT 11Z WITH HRLY LIQUID
   EQUIVALENT OF 0.05 TO 0.10 INCHES COMMON. LOCALLY HIGHER AMOUNTS
   WERE NOTED ACROSS ERN KY APPROACHING 0.20 IN/HR.

   SURFACE OBSERVATIONS SHOW THE FREEZING LINE IS MOVING SWD WITH
   TEMPERATURES DROPPING 2-4 DEGREES F/HR. THE RELATIVELY STEEP FRONTAL
   SLOPE WILL FAVOR A QUICK CHANGEOVER FROM RAIN TO SLEET TO SNOW AS
   THE FRONT CONTINUES S. AS THIS OCCURS...A ZONE OF FRONTOGENETICAL
   FORCING WILL PERSIST AS THE FRONTAL INVERSION DEEPENS AND
   WARM-CONVEYOR MOISTURE IS LIFTED NEWD.

   ..JEWELL.. 03/03/2014


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

   LAT...LON   38507496 38077511 37367680 37087780 36758022 36768117
               37138158 37358166 37638158 38727973 39507770 39847549
               40167403 39887399 39277429 38937465 38507496 

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Page last modified: March 03, 2014
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