The March 13-14 Nor’Easter brought widespread winter weather conditions, including blizzard,to the East Coast. Three, 2km water vapor channels on GOES-16 provide a perspective of a developing Nor’Easter not before seen in geostationary orbit. The three moisture channels allow forecasters to view moisture within multiple atmospheric layers, as opposed to one broad layer as is available on the current GOES Imager. Comparisons between the three channels allow forecasters to more correctly identify regions of dry atmosphere versus regions of relatively thin moisture versus clouds or deeper moisture. Cold areas represent regions of clouds, higher moisture content (sensing higher in the atmosphere) and/or cooler temperatures, while warm areas represent represent cloud-free regions of low moisture content (sensing lower in the atmosphere) and/or warmer temperatures. Additionally, features such as the longwave trough/ridge pattern, shortwaves, and divergence/convergence patterns are apparent in the three water vapor channels. Below is a 3.5 hour, 5-min loop of the deepening Nor-Easter from the morning of March 14.
-Bill Line, NWS
“The GOES-16 data posted on this page are preliminary, non-operational data and are undergoing testing. Users bear all responsibility for inspecting the data prior to use and for the manner in which the data are utilized.”