18z NAM snow ratios... 4 hours straight of 16-24:1 now that would be something (Climo is 9:1 I believe) as seen on the attached sounding for RDU, 850mb temps during height of moisture is -5C, saturated Dendritic Growth Zone, 27 DP, no problems here. pic.twitter.com/haK76QOYZ9

— Dr. Jonathan Wall (@_jwall) January 15, 2018