MD 0030 CONCERNING HEAVY SNOW FOR NORTHERN SOUTH CAROLINA THROUGH CENTRAL NORTH CAROLINA AND SOUTH CENTRAL VIRGINIA
Mesoscale Discussion 0030 NWS Storm Prediction Center Norman OK 0621 AM CST Wed Jan 17 2018 Areas affected...northern South Carolina through central North Carolina and south central Virginia Concerning...Heavy snow Valid 171221Z - 171715Z SUMMARY...Snowfall rates locally up to 1 inch per hour are possible through the morning from a portion of northern SC, central NC and south-central VA. DISCUSSION...The freezing line from east-central NC through western SC continues slowly east due to progression of deeper baroclinic zone and also evaporative cooling within the near-surface melting layer. Bands of mostly light snow persist from western SC through western and Central NC into southern VA. However, water vapor and IR imagery indicates upper trough taking on a more neutral tilt across the TN Valley with general cloud-top cooling noted within the last couple of hours. Model data have been consistent with strengthening a mid-upper jet within base of this trough. The resulting forcing in the exit region of this feature may enhance snowfall rates within evolving bands through the morning, especially from central NC into south central VA where rates could approach 1 inch per hour at times. ..Dial.. 01/17/2018 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...AKQ...RAH...RNK...CAE...GSP... LAT...LON 35058154 36907968 36547770 34927981 35058154
from SPC Mesoscale Discussions http://bit.ly/2DFxMnH
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