MD 0119 CONCERNING FREEZING RAIN FOR PORTIONS OF THE MID-ATLANTIC INTO CENTRAL VIRGINIA AND NORTHERN NORTH CAROLINA
Mesoscale Discussion 0119 NWS Storm Prediction Center Norman OK 0923 AM CST Thu Feb 18 2021 Areas affected...portions of the mid-Atlantic into central Virginia and northern North Carolina Concerning...Freezing rain Valid 181523Z - 181830Z SUMMARY...Sleet and freezing rain continues from the mid-Atlantic southward into northern North Carolina. The precipitation will gradually come to an end from west to east through the morning and early afternoon. DISCUSSION...Persistent cold air damming in the lee of the Appalachians has maintained upper 20s to low 30s temperatures as far south as northern North Carolina. Surface observations in this area have shown ice accretion as high as 0.1" per hour recently. The greatest freezing rain accumulation has been across central and southern Virginia where temperatures remain in the upper 20s to low 30s and precipitation is mostly falling as freezing rain. Farther north, temperatures are cold enough at the top of the boundary layer (as seen on IAD 12Z RAOB) to support mostly sleet. Isentropic ascent will shift northeastward by early afternoon which should bring an end to precipitation across much of this region by 19-20Z. ..Bentley.. 02/18/2021 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...PHI...AKQ...LWX...RAH...RNK...GSP... LAT...LON 35458016 35658059 36308008 37187919 37817878 38017871 38937784 39717695 39717582 39607502 39337447 39197442 38887455 38787508 38787552 38507580 38277584 37717674 37347691 36487713 36127789 36017852 35757924 35497976 35458016
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