'83 was a very dynamic storm. Very heavy snow over MD, DC and NoVa during the height with thundersnow across the area. It was a moisture bomb, so the snow consistency was a bit on the wet side, but it was a higher ratio at its height when best lift was centered over the area. My Father told me he ended up with 23" at the end of the storm with over a foot in a 4 hour span. Thundersnow woke him up and visibility was below 100 yards at one point. Great storm. You should go read up on it. One of the best the area has had in last 50 years.