Winter '24 / '25 - Snow Storm #4: Preliminary STP Verifications

Presidents Day
19-FEB-79

UPDATED 18-FEB @ 10:30 AM ET to include snowfall for CAR ... BGR ... and BGM plus trace amounts for several other stations on 17-FEB.

h/t RS

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Preliminary verification of storm-total snowfalls based on reporting from CDUS41 (CLI) ... CXUS51 (CF6) ... METARs ... and PNS bulletins issued by NWS.

Good coverage and reporting.

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HYA
STP derived from an inverse distanced-weighting technique using vicinity STP reports
from Barnstable county carried in the BOXPNS bulletin as inputs.

Summary SLR value is quantity-weighted.
Station SLRs < 8 are not reported b/c of probable contamination from liquid and/or freezing precipitation.

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Stations observing >= Trace:  22 (81%)
Stations observing > Trace:  18 (67%)

Given a station had measurable snowfall; stations observing at least:
4" - 9 (33%)
6" -  4 (15%)
8" - 3 (11%)
10" - 2 (7%)

MAX snow melt-water (minimum SLR 8:1)
CAR - 1.22"
PWM - 1.01"
BTV - 0.92"

MAX precipitation (frozen + freezing + liquid)
PVD - 1.98"
ORH - 1.89"
ISP - 1.80"

New Daily Record(s)
16-FEB
CAR 9: (8.4"; 2021)

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Daily snowfall data table

ORANGE: new daily record

GREY:  STP derived from PNS or METARs or inverse distance weighting

Trace amounts (displayed as 0.05") are not included in STP or SLR calculations.

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Areal distribution of storm-total snowfall

Image courtesy NOHRSC

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SFC analysis:  15z ... 16-FEB-25

Image courtesy DOC / NOAA / NWS / NCEP / WPC
https://www.wpc.ncep.noaa.gov/html/avnsfc.shtml

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Please report any errors in Comments along with a link to the correct data.
FINAL results expected NLT TUE evening on or about 9 PM ET.