Wednesday, March 4, 2009

Snow Storm #8: Preliminary Verification

(updated below - Update2)

Preliminary storm-total snowfalls for Sunday and Monday from CDUS41...PNS...and CF6 bulletins.

Eight new daily records.
SUN...01 MAR 2009
ISP - 3.8" (2.1"; 2005)
ACY - 4.6" (1.7"; 1968)

MON...02 MAR 2009
ORH - 9.3" (7"; 1948)
PVD - 10" (7.1"; 1996)
BDR - 7.6" (4.5"; 2006)
BDL - 7.9" (7.9"; 1948)
ISP - 9.7" (5"; 1996)
PHL - 5.6" (5"; 1914)

CON snowfall was missing from CDUS41 at post time. GYXPNS bulletin carried a storm-total snowfall report of 9" as of 7:28 AM MON...02 MAR 2009 with 'Heavy Snow' in Remarks.

METAR P-group reported 0.17" liquid between 7:32 AM and 12:51 PM...after which light snow continued with no additional accumulations recorded by the tipping bucket. The 9" snowfall reported in the PNS bulletin had a liquid equivalent of 0.67" and a SN:H2O of 13.4:1. An estimated 2.3" of additional snow fell @ CON between 7:32 AM and 12:51 PM.

The 11.3" storm-total snowfall verification value for CON will be revised should WFO GYX get around to reporting the actual amount before the final results are posted.

Please report errors in Remarks.

Final results and storm summary Wednesday evening.

Update
WFO GYX published snowfall data in the F-6 for CON Tuesday afternoon.
3/1: 0.5"
3/2: 11"
STP = 11.5"

Update2
WFO BOX corrected the F-6 bulletin/s MAR 2 daily snowfall report for BOS. The corrected value is 6.9" for a two-day STP of 8.5".

WFO AKQ corrected the F-6 bulletin/s MAR 2 daily snowfall report for RIC. The corrected value is 2" for a two-day STP of 6.3".

Two more stations set new daily snowfall records on MAR 2.
EWR - 5.3" (4.3"; 1996)
BWI - 4.7" (3.7"; 1969)

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