The first ever mention of a SWFE? After further reading it seemed it meant a snowstorm on the southwest side of the storm. Deep snowfall closing the Erie Canal in NY with 3" of rain in PVD and road washouts in Great Falls, NH? It does say in another section that it started as snow in parts of eastern New England, with 5" at Lowell and 7" at Portsmouth followed by heavy rain.
Can envision how it happened, pretty interesting storm and observations. Thanks for sharing.