Storm Coordination Message #1 – Flash Flood/Coastal Flood Potential – Saturday 8/11/18

Hello to all…

..Heavy Rainfall from convective heavy showers and isolated thunderstorms may cause flooding of urban and poor drainage areas and smaller streams and rivers across Southern New England today through tonight. There is also the potential for minor coastal flooding at the time of high tide around midnight tonight. There is a low risk for an isolated strong to severe thunderstorm as well but the main threat is flooding today..
..A Flash Flood Watch is in effect for Northern Connecticut, all of Rhode Island and Massachusetts except for Cape Cod and the Islands for the potential of flash flooding of urban and poor drainage areas as well as some smaller rivers and streams..
..A Coastal Flood Advisory is in effect from 10 PM Saturday Evening to 2 AM Sunday Morning for East Coastal Massachusetts including Cape Cod and Nantucket Island for minor coastal flooding at the time of high tide..
..SKYWARN Activation with Ops at NWS Boston/Norton will be monitoring the situation starting at 830 AM today lasting throughout the day and evening..

A stalled out frontal boundary coupled with waves along the frontal boundary will set the stage for convective heavy showers and isolated thunderstorms. As those heavy showers and thunderstorms train over the same area, it will set the stage for the potential of flooding across those areas. Not all areas will see flooding but those areas that see persistent heavy rainfall from showers and thunderstorms training over the same area will be the locations that see flooding. There is also the low risk for an isolated strong to severe thunderstorm. The scenario is not quite as potent as last Saturday but something that will also bear watching in addition to flooding. There is also the potential for minor coastal flooding at the time of high tide late Saturday Night. The headlines detail the Flash Flood Watch and Coastal Flood Advisory in effect for the area.

SKYWARN Activation with Ops at NWS Boston/Norton will be monitoring the situation starting at 830 AM today lasting throughout the day and evening. This will be the only coordination message as we move into operations mode. Below is the NWS Boston Norton Flash Flood Watch statement, Coastal Flood Advisory, Hazardous Weather Outlook and Enhanced Hazardous Weather Outlook:

NWS Boston/Norton Flash Flood Watch Statement:
http://kamala.cod.edu/ma/latest.wgus61.KBOX.html

NWS Boston/Norton Coastal Flood Advisory Statement:
http://kamala.cod.edu/ma/latest.whus41.KBOX.html

NWS Boston/Norton Hazardous Weather Outlook:
http://kamala.cod.edu/ma/latest.flus41.KBOX.html

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/box/ehwo

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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