Got this from Weather.com
While accumulating snow has fallen well into the month of May in many locations from western New York to West Virginia, snowfall this heavy, so late in the season is rare, but not unprecedented.
For instance, in Buffalo, N.Y. there have been 10 calendar days of 1"+ snow after April 22, according to the National Weather Service. However, dating to 1884, there have been only 3 calendar days after April 22 with at least 4" of snow, there, only one of which is since 1909!
Buffalo: 4"+ snow days later than Apr. 22
April 30, 1908 (4.2")
May 2, 1909 (5.1")
May 7, 1989 (7.9")
Similarly, in Pittsburgh, dating to 1880, there have been only 2 calendar days after April 22 with at least 3" of snow, the last of which occurred almost 46 years ago!
Pittsburgh: 3"+ snow days later than Apr. 22
April 30, 1908 (4.2")
May 2, 1909 (5.1")
What about higher elevations, those that could see a foot or more of total snow? In Warren, Pa. (elev. 1200'), dating to 1893, there have been only 2 calendar days after April 22 with at least 6" of snow, the last of which occurred 45 years ago!
Warren, PA: 6"+ snow days later than Apr. 22
April 24, 1967 (6.5")
April 30, 1908 (13")
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