There is as interesting rule or oddity which exists with Significant East Coast snowstorms that several meteorologists have noted over the past several years. If you go back to look of the Paul Kocin snowstorm snowstorms in his first book which studies snowstorm events from 1955 to 1987 and you include the recent events you'll find that the all snow events along the I-95 corridor cities -- Richmond Washington D.C. Baltimore Philadelphia New York City New Haven Providence Boston--- those events of all occurred on a weekend.
All except for 2 events. Really. I call this the I-95 SECS WEEKEND RULE. Now that being said let's keep the few criteria or parameters... a weekend event would be a snowstorm that started on a Friday and ended on a Saturday... OR began on a Saturday and ended on a Sunday...OR began on a Sunday and ended on a Monday.
This oddity does not apply to snowstorms in the lower mid Atlantic -- say Virginia D.C. Lower Maryland and NC... nor doesn't apply to a land northeast snowstorms that might affect areas let's say from interior Pennsylvania often to interior sections of New England.
Given those parameters the fact is every single major I-95 PURE snowstorm -- has occurred on a weekend. Everyone since 1900 except for 2....
I am sure you recall January 96 blizzard--it was a Saturday into Sunday into Monday event... and the President's Day 2 snowstorm FEB 16-17 2003 was also a weekend Major east coast Snowstorm (MECS).
what about Dec 29-30 2000? That was a weekend event( as defined above).... Feb 10-11 1994 ( the Ice/ snow storm) with a Friday to Saturday event....
The March 12 13th historical 1888 blizzard was a Sunday to Monday event... the Feb. 12 -14 1899 severe East Coast snowstorm that was part of an arctic outbreak of historic proportions... occurred on a Friday to Sunday.. The ash Wednesday's severe Noreaster of March 5-7 occurred on a Monday to Wednesday... and it was a rain event for most of East Coast I-95 cities.
Well you get the idea. This is something that folks like myself...Mr Drag and Paul Kocin...Joe B have all mentioned and talked about from time to time.
Interestingly this oddity does not apply for mid Atlantic snowstorms. For example the January 24 25th 2000 severe Noreaster which dumped some 21" snow in Charlotte and greater than 6" of snow in much of South Carolina...15"- 18" in central Virginia and 12" s of snow in DC...only drop 6" in Philly New York City and Boston... and it was a Monday Tuesday event.
OK well what about Xmas 2002 Noreaster... you may ask? It was a Tueday - Wednesday event BUT keep in mind except for the NYC / LI areas most of I-95 cities did NOT get significant snow if any at all. In fact D.C. Baltimore Philly the coastal errors of Connecticut and southeast New England saw mainly rain... it was not a Major snow event in the majority of the northeast so The DEC 25-26 Noreaster does not break the "Big snows occur on weekend " rule.
Of course there is a reason WHY this "oddity" exists .... If we include the periods of Friday to Saturday... Saturday to Sunday... and Sunday to Monday.. that 3 days out of 7. Even so it does seem a little unlikely thing.
This weekend rule doesn't apply to say systems that are strictly new England snowstorms/ noreasters... though it does seem to occur alot up there... for instance April 97. And some of the big snows in the lower Mid Atlantic -- NC VA MD seem a lot of Mid week storminess.