Winter '20 / '21 - Snow Storm #2: Preliminary STP Verification

Accumulation-weighted SN:H2O

 UPDATE:  FRI ... 05-FEB-21
Additional measurable snowfall associated with Snow Storm #2 was observed on the 4th at CAR (1.7") ... CON (0.1") ... BTV (0.1") ... BOS (0.1").

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Originally posted THU ... 04-FEb-21 @6:49 PM EST

Preliminary verification of storm-total snowfalls for SUN through WED from CDUS41 (CLI) ... CXUS51 (CF6) ... METARs ... and PNS bulletins.  Excellent coverage and reporting.

HYA STP based on METAR's present weather and hourly P-group data.

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SLR not reported for some stations with measurable snowfall b/c significant liquid and / or freezing precipitation also occurred during the verification period.

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Stations observing at least 0.1":  25 (93%)

Given a station had measurable snowfall; stations observing at least ...
4" - 18 (67%)
8" - 12 (44%)
12" - 7 (26%)
18" - 2 (7%)
24" - 1 (4%)

MAX snow melt-water (minimum SLR 8:1)
ABE:  2"
EWR:  1.66"
JFK:  1.41"

MAX liquid precipitation (frozen + freezing + liquid):
ABE:  2"
EWR:  1.66"
ACY:  1.59"

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New daily record(s)
31-JAN-21
BWI - 3.8" (3.7"; 1985)

01-FEB-21
ABE - 22.4" (7.2"; 1957)
BDR - 15.2" (4.4"; 1957)
EWR - 15.1" (7.5"; 1957)
JFK - 11.9" (1.7"; 2011)
BDL - 11.7" (5.9"; 2011)
ISP - 10.3" (0.6"; 2011)
BGM - 4.8" (4.3"; 2011)
IAD - 2.5" (1.5"; 1966)

Storm total snowfall
Image courtesy NOHRSC

SFC analysis:  03z ... 02-FEB-21
Image courtesy DOC / NOAA / NWS / NCEP / WPC

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Please report any errors in Comments along with a link to the correct data.
FINAL results expected NLT FRI evening.