Tropical Storm Henri Coordination Message #2 – Sunday 8/22/21-Monday 8/23/21 Henri Potential Impacts
Hello to all…
..Tropical Storm Henri poised to strengthen and affect Southern New England Sunday into Monday as either a Category-1 hurricane or a strong tropical storm with a landfall somewhere between Eastern Connecticut and Long Island NY to Cape Cod some time late Sunday. Preparations to protect life and property should be rushed to completion..
..A Hurricane Watch is in effect from New Haven Connecticut to Sagamore Beach Massachusetts and includes Kent, Washington, Bristol and Newport Counties of Rhode Island and Barnstable, Dukes, Nantucket, Southern Bristol and Southern Plymouth Counties of Massachusetts for hurricane conditions in the watch area in the Sunday to Monday timeframe..
..A Storm Surge Watch is in effect from Flushing New York to Sagamore Beach Massachusetts including Nantucket, Marthas Vineyard and Nantucket for the Sunday to Monday timeframe..
..Additional Watches and Warnings will be required for other parts of Southern New England in future updates..
..Remnants of Tropical Depression Fred caused significant heavy rainfall in portions of Connecticut, Western, Central and Northeast Massachusetts on Thursday along with severe weather with one confirmed tornado in Clinton, Massachusetts and a second possible tornado under investigation in Thompson, Connecticut..
..SKYWARN Self-Activation is likely the potential impacts of Henri for Sunday into Monday. ARES/RACES and other similar groups should closely monitor the progress of Henri and seek advice from their leadership. Pictures, videos and post storm damage reports from Thursday’s severe weather event and upcoming impacts from Henri can be sent as a reply to this email, via our WX1BOX Facebook and Twitter feeds and through the email address pics@nsradio.org..
For Thursday, the remnants of tropical depression Fred caused one confirmed tornado in Clinton, Massachusetts with details to follow later today and a possible tornado in Thompson, CT. A waterspout from the same parent cell that caused storm damage in Thompson, CT occurred in Webster, Massachusetts. Further details and wrap-up from Thursday’s severe weather will be posted in this evening’s Henri coordination message.
Tropical Storm Henri has started to strengthen and should reach hurricane strength later tonight or Saturday Morning. Henri has turned northwest, turn northward and head on a path that will bring it over the Southern New England coast and possibly eastern Long Island New York as we move into Sunday and Monday. This will result in direct impacts from Henri as a strong tropical storm or minimal Category-1 hurricane. Model consensus has been converging on a solution over Southeast New England anywhere between Eastern Connecticut and Eastern Long Island New York to Southeast Massachusetts in latest model updates. The headlines reflect the current watches and thinking. The key factors over the next several days are as follows:
1.) The track of Henri and whether a westward trend in the guidance continues or settles on the current track or if some eastward shifts occur. The west side of Henri will experience some strong winds with heavy rain as the main threat while closest to the center and on the east side of the system will have the greater potential for damaging winds, and severe weather but less rainfall. The track will also affect which coastal areas will have the greatest risk for coastal storm surge flooding.
2.) The intensity and structure of Henri are additional factors. All models strengthen Henri significantly as it moves northward towards New England. Its peak intensity along with the size of the tropical storm force and hurricane force wind fields will also determine how strong the impacts are over the Southern New England coast and Southeast/Eastern New England.
3.) The speed of Henri’s approach to the region. Some models slow Henri’s approach toward Southern New England. Depending on when that slowing occurs and how close it is to the Southern New England coast will determine impacts over the region. Typically, tropical systems accelerate through Southern New England but the setup for Henri may actually have it slow near or over Southern New England. This might allow for more weakening of Henri due to cooler waters but could extend the impacts of the system over a longer duration and where it slows and how close it is to the region when it slows down will determine the extent of Henri’s impacts. Regardless of the speed, impacts in the area from heavy rainfall and flash flooding along and to the west of the track and damaging winds, severe weather and coastal storm surge flooding along and east of the track are likely.
SKYWARN Self-Activation is likely for the potential impacts of Henri for Sunday into Monday. ARES/RACES and other similar groups should closely monitor the progress of Henri and seek advice from their leadership. The next coordination message on Henri will be posted by 1100 PM Friday Evening. Pictures, videos and post storm damage reports from Thursday’s severe weather event and upcoming impacts from Henri can be sent as a reply to this email, via our WX1BOX Facebook and Twitter feeds and through the email address pics@nsradio.org. Below is the NWS Boston/Norton Hurricane Local Statement, Area Forecast Discussion, Enhanced Hazardous Weather Outlook, Public Information Statement on Hurricane Safety Tips and the NHC Tropical Storm Henri advisory package:
NWS Boston/Norton Area Forecast Discussion:
https://kamala.cod.edu/ma/latest.fxus61.KBOX.html
NWS Boston/Norton Hurricane Local Statement:
https://kamala.cod.edu/ma/latest.wtus81.KBOX.html
NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/box/ehwo
NWS Boston/Norton Public Information Statement – Hurricane Safety Tips:
https://kamala.cod.edu/offs/KBOX/2108201412.nous41.html
National Hurricane Center – Miami Florida Information:
Tropical Storm Henri Public Advisory Information:
https://kamala.cod.edu/TPC/latest.wtnt33.KNHC.html
Tropical Storm Henri Technical Discussion Information:
https://kamala.cod.edu/TPC/latest.wtnt43.KNHC.html
Tropical Storm Henri Forecast/Advisory Information:
https://kamala.cod.edu/TPC/latest.wtnt23.KNHC.html
Tropical Storm Henri Wind Speed Probabilities:
https://kamala.cod.edu/TPC/latest.font13.KNHC.html
Tropical Storm Henri Key Messages:
https://www.nhc.noaa.gov/refresh/graphics_at3+shtml/092753.shtml?key_messages#contents
Tropical Storm Henri Storm Graphics:
https://www.nhc.noaa.gov/refresh/graphics_at3+shtml/092753.shtml?cone#contents
Respectfully Submitted,
Robert Macedo (KD1CY)
ARES SKYWARN Coordinator
Eastern Massachusetts ARES Section Emergency Coordinator
Home Phone #: (508) 994-1875 (After 6 PM)
Home/Data #: (508) 997-4503 (After 6 PM)
Work Phone #: 508-346-2929 (8 AM-5 PM)
Email Address: rmacedo@rcn.com
http://ares.ema.arrl.org
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