The third nor’easter in less than two weeks was poised to have significant impacts from the Ohio River Valley up through the northeast US March 12-14.
GOES-16 1-min imagery captured the evolution of the system in detail, starting with it’s strengthening across the Ohio River Valley on March 12. 500 m, 1-min visible imagery at sunrise revealed fresh snow cover from southern Illinois through southern Indiana and into much of Kentucky (Figure 1).
Figure 1: 12 March 2018 GOES-16 1-min visible imagery. Full res
Bill Line, NWS
Satellite Liaison Blog 
