Storm Coordination Message #2 – Saturday 10/27/18 Coastal Storm/Nor’easter Potential

Hello to all…
..Strong coastal storm on track to impact Southern New England with Heavy Rainfall and the possibility of urban and poor drainage flooding, Strong to Damaging Winds, Minor to low-end Moderate Coastal Flooding and the possibility of Isolated Severe Thunderstorms on Saturday..
..A High Wind Warning is now in effect from 600 AM-500 PM for Southeast Coastal Massachusetts, Cape Cod and the Islands and South Coastal Rhode Island and a High Wind Warning is in effect from 900 AM-800 PM for Eastern Essex, Suffolk and Eastern Norfolk Counties of Massachusetts for sustained winds of 20-30 MPH with gusts to 60 MPH. These winds will be sufficient for isolated to scattered pockets of tree and power line damage and isolated to scattered power outages..
..A Wind Advisory is now in effect from 1100 AM-600 PM Saturday for Western Norfolk and Northern Bristol Counties of Massachusetts and Kent and Bristol Counties of Rhode Island and a Wind Advisory is now in effect from 2 PM-8 PM Saturday for Central and Southeast Middlesex and Western Essex Counties for sustained winds of 15-20 MPH with gusts 45-50 MPH. These winds will be sufficient for isolated pockets of tree and power line damage and isolated power outages..
..A Coastal Flood Advisory is now in effect from 1100 AM-600 PM Saturday for East Coastal Massachusetts, Cape Cod and the Islands for minor coastal flooding at the time of high tide with up to 1 foot of inundation across the most vulnerable portions of the coast line..
..A Flash Flood Watch is now in effect from Saturday Morning through Saturday Evening for Southeast Massachusetts and Rhode Island including the islands for 2-3″ of rainfall with isolated higher amounts and the potential for urban and poor drainage flooding in the areas that receive the heaviest rainfall..
..SKYWARN Activation with Ops at NWS Boston/Norton will commence by 730 AM Saturday Morning lasting through Saturday Night for the coastal storm..
A strong coastal storm remains on track to impact Southern New England. The updated headlines cover the storm potential. Factors that will be defined as the storm unfolds include the following:
1.) There maybe some snow/sleet mix at the start in extreme northwest portions of the NWS Boston/Norton coverage area.
2.) The extent of strong winds in Eastern New England could be subject to some fluctuation. There are even stronger winds just offshore that if those winds could go over land could lead to slightly greater wind impacts. High Wind Warnings have been issued and expanded to cover much of East and South Coastal New England.
3.) There is the possibility of an isolated severe thunderstorm along the coastal storm warm front in Southeast New England. While this is a low probability, given the trends over the past summer into fall on marginal severe weather potential becoming realized, it is noted as a possible threat. The isolated severe thunderstorm potential if it were to materialize would mean isolated pockets of more significant wind damage in any area impacted by the severe thunderstorm and there is even the possibility of an isolated tornado or waterspout.
4.) Localized urban and poor drainage flooding is possible in areas that receive convective rainfall that enhances rain totals. A Flash Flood Watch has now been posted in Southeast New England where this potential is greatest.
SKYWARN Activation with Ops at NWS Boston/Norton will commence by 730 AM Saturday Morning lasting through Saturday Night for the coastal storm. This will be the last coordination message on this system as we shift into operations mode. Below is the NWS Boston/Norton High Wind Warning/Wind Advisory Statement, Coastal Flood Advisory Statement, Flash Flood Watch Statement, Hazardous Weather Outlook, Enhanced Hazardous Weather Outlook and Facebook Infographics:
NWS Boston/Norton High Wind Warning/Wind Advisory Statement:
https://kamala.cod.edu/ma/latest.wwus71.KBOX.html
NWS Boston/Norton Coastal Flood Advisory Statement:
NWS Boston/Norton Flash Flood Watch Statement:
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

NWS Boston/Norton Facebook Infographics:
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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