Allentown Snow Cover Study

NWS Mt Holly did a little follow-up research on continual snow on the ground, as measured by our long term climate sites at 7am each day. It’s listed below in caps since we copied this from our Mount Holly Area Forecast Discussion. It should serve as reasonable approximation for the lower elevations of the region along and north of Interstate 78. 

ALLENTOWN THROUGH TODAY-FEBRU
ARY 23, HAS RECORDED 33 CONSECUTIVE DAYS OF 1 INCH OR GREATER SNOW DEPTH WHICH PLACES THIS AS THE 11TH LONGEST IN OFFICIAL RECORDS DATING BACK TO 1923. THE STREAK FOR
ALLENTOWN BEGAN JANUARY 22.

SINCE THIS EVENING THERE STILL WAS A SNOW DEPTH OF 8 INCHES ON THE GROUND PACKED WITH A LITTLE OVER 3 INCHES OF WATER EQUIVALENCE…AND TEMPERATURES FOR THE PERIOD MONDAY THROUGH NEXT SUNDAY MARCH 2 SHOULD NOT EXCEED 34 DEGREES, ODDS FAVOR THIS STRETCH OF CONTINUAL SNOWCOVER PROBABLY APPROACHING OR POSSIBLY EXCEEDING 40 DAYS. 

THIS…EVEN IF WE WERE TO PROCEED WITHOUT ANY RENEWED SNOW ACCUMULATION BEFORE NEXT SUNDAY MARCH 2ND.

RANKING BELOW LONGEST
1. 78 DAYS ENDING 3/22/1994
2. 59 DAYS ENDING 3/13/1978
3 TIED. 49 DAYS ENDING 2/12/1977 AND 49 DAYS ENDING 2/19/1925
4. 45 DAYS ENDING 3/4/1936
5. 43 DAYS ENDING 2/2/1970
6. 42 DAYS ENDING 3/6/1963
7. 41 DAYS ENDING 1/19/1996
8. 37 DAYS ENDING 2/17/1948
9. 36 DAYS ENDING 2/11/2011
10. 34 DAYS ENDING 2/22/1961
11. 33 DAYS ENDING 2/23/2014

PHILADELPHIA…NO LONGER WITH ANY SNOW ON THE GROUND…RECORDED 18 CONSECUTIVE DAYS BEFORE NO SNOW WAS RECORDED ON THE GROUND ON FEBRUARY 22ND. THE STREAK BEGAN ON THE 4TH OF FEBRUARY. THAT WAS
THE 7TH LONGEST PERIOD OF CONTINUAL SNOWCOVER WITH RECORDS SEARCHED, DATING BACK TO ONLY 1948….A SHORTER PERIOD OF RECORD.

posted 811PM Sunday February 23.

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