Table of preliminary storm-total snowfall by station for WED from CDUS41 (CLI) ... CXUS51 (CF6) and ... SAUS41 (METAR) bulletins.
Exceptions:
SBY
17-JAN CLI and CF6 bulletins carried 'MM' as daily snowfall at post-time. Intermittent light snow reported during the day between 1029 and 1527 ... twice reducing VSBY briefly to 2 1/2 SM for a total of 34 minutes. Tipping bucket data unhelpful. STP entered as Trace.
HYA
Estimated storm-total snowfall based on
inverse distance weighting technique using vicinity STP reports from Barnstable county carried in PNSBOX.
BOS
All frozen precipitation. Low SLR due likely to 2M temperatures > 0°C.
PWM and CON
17-JAN CLI and CF6 bulletins carried 'MM' as daily snowfall at post-time. STPs from PNSGYX.
UPDATE 19-JAN-18 @ 3:15 PM EST
PWM/CON CLI and CF6 carry 5.9" and 2.5" ... respectively.
UPDATE 19-JAN-18 @ 10:15 PM EST
CON
The 17-JAN CLI snowfall report issued by GYX for CON is clearly in error given VCNTY PNSGYX
reports.
Inverse distance weighting using all VCNTY PNSGYX reports from Merrimack county in NH results in
a derived two-day STP of 4.3". The closest public report of 4.2" came from CoCoRaHS 1.7 MI SE of
CON.
The derived two-day STP of 4.3" was reduced for verification to 3.5" after applying an SLR of 13.6 to the 0.06"
liquid reported by ASOS prior to contest deadline. CON/s SLR was derived by inverse distance
weighting of SLRs from 'neighboring' NEWxSFC forecast stations (ORH [12.7] and PWM [14.6]).
Bottom line: Changing CON/s preliminary STP (5.6") to the verifying STP (3.5") flipped
forecaster rankings in the 4th / 5th and 8th / 9th slots along with changes to all Z-scores
(some better; some worse).
CON ... along with SBY ... have long been a troublesome stations.
---
Stations observing at least:
Trace - 27
4" - 5 (19%)
6" - 1 (4%)
8" - 0
Max melt-water at RDU (0.49")
PWM - 0.41"
BGR - 0.37"
New daily records: 2
RDU - 5.9" (4"; 1946)
ORF - 2.5" (1.8"; 1911) [corrected station ID: h/t Roger Smith / Peter O'Donnell in Comments]
Surface analysis: 15z ... 17-JAN-18
---
Please report any errors in Comments along with a link to the correct data.
Final results for Snow Storm #3 delayed one day (conducting fermentation experiment FRI evening)
Expected post time: NLT SAT evening.