Powerful Nor’easter affects the Mid-Atlantic and Northeast US
5-minute GOES-19 Mid-level Water Vapor (6.9 µm) images with 3-hourly analyses of Surface Pressure (beige) and Surface Fronts (cyan), from 1001 UTC on 22 February to 0201 UTC on 24 February [click to play MP4 animation]
A slightly closer view using 1-minute Mesoscale Domain Sector GOES-19 Mid-level Water Vapor images (below) included overlays of GLM Flash Extent Density and GLM Flash Points, along with plots of surface weather symbols and peak wind gusts (note that there was a brief outage of GOES-19 imagery on 23 February). Isolated inland GLM signatures suggested that some brief thundersnow may have occurred (0335 UTC | 0529 UTC | 1036 UTC | 1057 UTC) — in fact, regarding the 0529 UTC GLM signature, thundersnow was reported at nearby Teterboro, New Jersey (KTEB) and Manhattan, New York (KJRB) 3-9 minutes later (in their 5-minute METARs).
1-minute GOES-19 Mid-level Water Vapor (6.9 µm) images (with overlays of GLM Flash Extent Density (large blue pixels) and GLM Flash Points (white dots), along with plots of Surface Weather symbols (red) and Peak Wind Gusts (yellow/red), from 1601 UTC on 22 February to 0200 UTC on 24 February [click to play MP4 animation]
5-minute GOES-19 daytime True Color RGB + Nighttime Microphysics RGB images, from 1201 UTC on 22 February to 0601 UTC on 24 February [click to play MP4 animation]