Storm Coordination Message #3 – Sunday 3/19/17 Winter Storm Event for Cape Cod and Islands

Hello to all…

..Model Trend shifts back a bit more west meaning a bit more snowfall and stronger winds for the Cape Cod and the Islands from the ocean storm with wind gusts to 40 MPH or so in other coastal areas of Eastern Massachusetts..
..A Winter Weather Advisory is now in effect through 5 PM EDT Sunday for Cape Cod and Nantucket for 2-4″ of snow with isolated amounts of 4-6″ possible. The heaviest snow is expected to be on the mid to Outer Cape and Nantucket with lesser snow near the Cape Cod Canal. The wet snow coupled with strong winds could cause isolated to scattered pockets of tree and wire damage and isolated to scattered power outages. A coating to an inch may occur on Martha’s Vineyard..
..A High Wind Warning is now in effect for Cape Cod and Nantucket from 2 PM Sunday to 2 AM Monday for Cape Cod and Nantucket for sustained winds of 25-35 MPH with wind gusts to 60 MPH. A Wind Advisory is now in effect for Martha’s Vineyard from 11 AM Sunday to 5 AM Monday sustained winds of 20-30 MPH with gusts to 50-55 MPH. These winds coupled with the wet snow accumulation will have the potential to cause isolated to scattered pockets of tree and wire damage and isolated power outages..
..SKYWARN Self-Activation will continue monitor this coastal storm system..

The coastal storm system has trended a little closer to the coast increasing the snow impacts to Cape Cod and the Islands. Strong to damaging winds are still likely particularly for Cape Cod and the Islands though other coastal areas could see wind gusts to around 40 MPH on Sunday. The headlines of this coordination message depict the current thinking. Key factors with this storm system remain as follows:

1.) The track and intensity of the storm system. Models are little closer with the storm system now prompting Winter Weather Advisories for Cape Cod and Nantucket with the heaviest snowfall for the mid to outer Cape and Nantucket.
2.) Any rain/snow line depending on the storm track and when the storm begins to occlude. This will need monitoring as well as the intensity of the precipitation as lighter precipitation may allow for a changeover to rain while heavier precipitation will allow it to remain snow.
3.) Impacts to roads could be less depending on time of day the heaviest snow is and pavement temperatures but given heavier snow amounts some road accumulation is now possible.
4.) The heavy wet snow threat is now a bit more of a concern with this update. If snowfall reaches around or more than 4″, it would reintroduce a wet snow coupled with strong to damaging wind threat for tree and power line damage. Even with lighter wet snow amounts, the strong winds themselves will have the potential for isolated to scattered pockets of tree and wire damage and isolated power outages.

SKYWARN Self-Activation will monitor this coastal storm system. This will be the last coordination message on this storm system unless another significant change to the storm scenario occurs and time allows for an update. Below is the NWS Taunton Winter Weather Advisory Statement, High Wind Warning/Wind Advisory Statement, Hazardous Weather Outlook and Winter Weather Graphics:

NWS Taunton Winter Weather Advisory Statement:
http://kamala.cod.edu/ma/latest.wwus41.KBOX.html

NWS Taunton High Wind Warning/Wind Advisory Statement:
http://kamala.cod.edu/ma/latest.wwus71.KBOX.html

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

NWS Taunton Winter Weather Graphics:
http://www.weather.gov/box/winter

Respectfully Submitted,

Robert Macedo (KD1CY)
ARES SKYWARN Coordinator
Eastern Massachusetts ARES Assistant 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
http://beta.wx1box.org
Like us on Facebook – http://www.facebook.com/wx1box
Follow us on Twitter – http://twitter.com/wx1box

Hello to all…

..Model Trend shifts back a bit more west meaning a bit more snowfall and stronger winds for the Cape Cod and the Islands from the ocean storm with wind gusts to 40 MPH or so in other coastal areas of Eastern Massachusetts..
..A Winter Weather Advisory is now in effect through 5 PM EDT Sunday for Cape Cod and Nantucket for 2-4″ of snow with isolated amounts of 4-6″ possible. The heaviest snow is expected to be on the mid to Outer Cape and Nantucket with lesser snow near the Cape Cod Canal. The wet snow coupled with strong winds could cause isolated to scattered pockets of tree and wire damage and isolated to scattered power outages. A coating to an inch may occur on Martha’s Vineyard..
..A High Wind Warning is now in effect for Cape Cod and Nantucket from 2 PM Sunday to 2 AM Monday for Cape Cod and Nantucket for sustained winds of 25-35 MPH with wind gusts to 60 MPH. A Wind Advisory is now in effect for Martha’s Vineyard from 11 AM Sunday to 5 AM Monday sustained winds of 20-30 MPH with gusts to 50-55 MPH. These winds coupled with the wet snow accumulation will have the potential to cause isolated to scattered pockets of tree and wire damage and isolated power outages..
..SKYWARN Self-Activation will continue monitor this coastal storm system..

The coastal storm system has trended a little closer to the coast increasing the snow impacts to Cape Cod and the Islands. Strong to damaging winds are still likely particularly for Cape Cod and the Islands though other coastal areas could see wind gusts to around 40 MPH on Sunday. The headlines of this coordination message depict the current thinking. Key factors with this storm system remain as follows:

1.) The track and intensity of the storm system. Models are little closer with the storm system now prompting Winter Weather Advisories for Cape Cod and Nantucket with the heaviest snowfall for the mid to outer Cape and Nantucket.
2.) Any rain/snow line depending on the storm track and when the storm begins to occlude. This will need monitoring as well as the intensity of the precipitation as lighter precipitation may allow for a changeover to rain while heavier precipitation will allow it to remain snow.
3.) Impacts to roads could be less depending on time of day the heaviest snow is and pavement temperatures but given heavier snow amounts some road accumulation is now possible.
4.) The heavy wet snow threat is now a bit more of a concern with this update. If snowfall reaches around or more than 4″, it would reintroduce a wet snow coupled with strong to damaging wind threat for tree and power line damage. Even with lighter wet snow amounts, the strong winds themselves will have the potential for isolated to scattered pockets of tree and wire damage and isolated power outages.

SKYWARN Self-Activation will monitor this coastal storm system. This will be the last coordination message on this storm system unless another significant change to the storm scenario occurs and time allows for an update. Below is the NWS Taunton Winter Weather Advisory Statement, High Wind Warning/Wind Advisory Statement, Hazardous Weather Outlook and Winter Weather Graphics:

NWS Taunton Winter Weather Advisory Statement:
http://kamala.cod.edu/ma/latest.wwus41.KBOX.html

NWS Taunton High Wind Warning/Wind Advisory Statement:
http://kamala.cod.edu/ma/latest.wwus71.KBOX.html

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

NWS Taunton Winter Weather Graphics:
http://www.weather.gov/box/winter

Respectfully Submitted,

Robert Macedo (KD1CY)
ARES SKYWARN Coordinator
Eastern Massachusetts ARES Assistant 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
http://beta.wx1box.org
Like us on Facebook – http://www.facebook.com/wx1box
Follow us on Twitter – http://twitter.com/wx1box

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