MAREPAM XMRPM1 / Wellfleet, MA / Selected Adolf Thies, GmbH CLIMA™ First-Class Advanced Anemometer (SN #05156209)

• Maximum Instantaneous: 91.5mph @ 12:59:43 UTC
• Maximum 0.1s Average: 89.8mph @ 12:59:43 UTC
• Maximum 0.5s Average: 83.9mph @ 12:59:44 UTC
• Maximum 1s Average: 79.6mph @ 12:59:44 UTC
• Maximum 3s Average: 72.0mph @ 12:59:44 UTC
• Maximum 60s Average: 62.9mph @ 12:59:47 UTC
• Maximum 120s Average: 60.5mph @ 13:00:06 UTC
• Sensor 11ft AGL / Ground 89ft AMSL
• Sensor calibration (8/12/2015 at SOH Wind Engineering, Inc., Williston, VT, USA) certificate: (PDF Link)
• Full tabular data (PDF)

The National Weather Service Boston/Norton MA published an 1117 AM EST Mon Jan 17 2022 Public Information Statement purporting to tabulate the "highest wind reports" (link) from this event. The following corrigenda thereto are respectfully asserted.

(N.B. (1/30/22): The following corrigenda do not attempt to arbitrate specific WxFlow maximum wind gust validities in light of recent findings suggesting occasional data corruption with WeatherFlow, Inc. Professional weather station wind gust maxima (see PDF). The following listing of corrections to high WxFlow reports should be individually evaluated per-station using windalert.com timeseries data to further differentiate accurate WxFlow gust reports vs. spurious WxFlow gust reports. Manually excluding datapoints due to the putative WxFlow False Spike Gust data phenomenon still results in significant underrepresentation and/or factual error in the NWS Boston/Norton MA 1117 AM EST Mon Jan 17 2022 PNS listing highest wind reports for certain locales.)

• The 1117AM NWS Boston PNS incorrectly claims the "highest wind repor[t]" from WeatherFlow's Wellfleet, MA station was "67 MPH" at "0329 AM".
  
  This station actually peaked at 82mph at 7:34am 1/17. See windalert.com (WeatherFlow paid-subscription-view interface to station data). This station recorded numerous other gusts over 70mph. Further, upon information and belief, WxFlow-reported gusts constitute full 1-s or 3-s averages and suggest even higher instantaneous maxima.



• The 1117AM NWS Boston PNS incorrectly claims the "highest wind repor[t]" from WeatherFlow's Point Judith, RI station (see "Maritime Stations") was "65 MPH" at "0255 AM".
  
  This station actually peaked at 80mph at 6:20am 1/17. See windalert.com (WeatherFlow paid-subscription-view interface to station data). This station recorded numerous other gusts over 65mph. Further, upon information and belief, WxFlow-reported gusts constitute full 1-s or 3-s averages and suggest even higher instantaneous maxima.



• The 1117AM NWS Boston PNS incorrectly claims the "highest wind repor[t]" from WeatherFlow's Westport, MA station "Horseneck Beach - The Knubbl[e]" was "44 MPH" at "0355 AM".
  
  This station actually peaked at 70mph at 6:50am 1/17. See windalert.com (WeatherFlow paid-subscription-view interface to station data). This station recorded numerous other gusts over 50mph. Further, upon information and belief, WxFlow-reported gusts constitute full 1-s or 3-s averages and suggest even higher instantaneous maxima.



• The 1117AM NWS Boston PNS incorrectly claims the "highest wind repor[t]" from WeatherFlow's Children's Island, MA station was "46 MPH" at "0354 AM".
  
  This station actually peaked at 77mph at 7:54am 1/17. See windalert.com (WeatherFlow paid-subscription-view interface to station data). This station recorded numerous other gusts over 60mph. Further, upon information and belief, WxFlow-reported gusts constitute full 1-s or 3-s averages and suggest even higher instantaneous maxima.



• The 1117AM NWS Boston PNS incorrectly claims the "highest wind repor[t]" from WeatherFlow's Scituate, MA station (see "Maritime Stations") was "52 MPH" at "0357 AM".
  
  This station actually peaked at 75mph at 7:52am 1/17. See windalert.com (WeatherFlow paid-subscription-view interface to station data). This station recorded numerous other gusts over 55mph. Further, upon information and belief, WxFlow-reported gusts constitute full 1-s or 3-s averages and suggest even higher instantaneous maxima.



• The 1117AM NWS Boston PNS incorrectly claims the "highest wind repor[t]" from WeatherFlow's Dread Ledge station (see "Maritime Stations") was "46 MPH" at "0349 AM".
  
  This station actually peaked at 70mph at 7:14am 1/17. See windalert.com (WeatherFlow paid-subscription-view interface to station data). This station recorded numerous other gusts over 50mph. Further, upon information and belief, WxFlow-reported gusts constitute full 1-s or 3-s averages and suggest even higher instantaneous maxima.



• The 1117AM NWS Boston PNS incorrectly claims the "highest wind repor[t]" from WeatherFlow's "Hatch Beach" Orleans, MA station was "53 MPH" at "0826 AM".
  
  This station actually peaked at 66mph at 8:36am 1/17. See windalert.com (WeatherFlow paid-subscription-view interface to station data). This station recorded numerous other gusts over 50mph. Further, upon information and belief, WxFlow-reported gusts constitute full 1-s or 3-s averages and suggest even higher instantaneous maxima.



• The 1117AM NWS Boston PNS incorrectly claims the "highest wind repor[t]" from the sole uploading "Mashpee", "MA" "CWOP" station (EW8978) was "46 MPH" at "0400 AM".
  
  This station actually peaked at 80mph at 8:30am on the CWOP feed (EW8978). This station recorded numerous other gusts over 55mph.



• The 1117AM NWS Boston PNS incorrectly claims the "highest wind repor[t]" from the MAREPAM XMRPM3 / "New Shoreham", RI station on the "CWOP" feed therefrom was "58 MPH" at "0409 AM".
  
  This station actually peaked at a conservative QC-filtered instantaneous peak of 72mph at 5:49am on the CWOP feed (FW8194).



• The 1117AM NWS Boston PNS incorrectly omits the 77mph gust recorded at 7:25am at WeatherFlow's primary "Duxbury" Duxbury, MA station while purporting to include the "highest wind reports" of the event and while citing only the lesser 59mph value recorded at WeatherFlow's second Duxbury, MA "Duxbury Bay" station having less exposure. See windalert.com (WeatherFlow paid-subscription-view interface to station data). The primary Duxbury WeatherFlow station recorded numerous other gusts over 60mph. Further, upon information and belief, WxFlow-reported gusts constitute full 1-s or 3-s averages and suggest even higher instantaneous maxima.



• The 1117AM NWS Boston PNS incorrectly omits the 71mph gust recorded at 5:28am at WeatherFlow's secondary "Nantucket Harbor AIB" Nantucket, MA station while purporting to include the "highest wind reports" of the event and while citing only a lesser "58 MPH" value recorded at WeatherFlow's other Nantucket, MA "Nantucket Habor" station to the west. See windalert.com (WeatherFlow paid-subscription-view interface to station data). The "Nantucket Harbor AIB" WeatherFlow station recorded numerous other gusts over 60mph. Further, upon information and belief, WxFlow-reported gusts constitute full 1-s or 3-s averages and suggest even higher instantaneous maxima.



• The 1117AM NWS Boston PNS incorrectly omits the 75mph gust recorded at 9:42am at WeatherFlow's Gloucester, MA Dog Bar Breakwater station while purporting to include the "highest wind reports" of the event. See windalert.com (WeatherFlow paid-subscription-view interface to station data). This station recorded numerous other gusts over 60mph. Further, upon information and belief, WxFlow-reported gusts constitute full 1-s or 3-s averages and suggest even higher instantaneous maxima.

3-Sensor Inst. Max Graph


Thies FCA Sensor Gust Timescale Detail


XMRPM1 Station Photograph (Oct. 2021)