Severe Weather Coordination Message #5 – Sunday 6/30/19 Severe Weather Potential & Saturday 6/29/19 Severe Weather Recap

Hello to all…

..After a round of severe weather and flooding in parts of Rhode Island, Central and Eastern Massachusetts, Isolated to Scattered strong to severe thunderstorms are possible to likely mid to late Sunday morning into early Sunday Evening across much of Southern New England. Strong to Damaging winds, hail, frequent lightning and heavy rainfall with the potential for urban and poor drainage flooding are the main threats…
..The Storm Prediction Center (SPC) has continued all of Southern New England in a marginal risk for severe weather on Sunday. Timeframe for severe weather is any time from 10 AM-6 PM on Sunday..
..SKYWARN Activation with Ops at NWS Boston/Norton will likely commence by 10 AM Sunday Morning..
..For Western Massachusetts Amateur Radio SKYWARN Spotters, the 146.94-Mount Tom Repeater which is the primary repeater for this area is down. For SKYWARN Operations in Western Massachusetts, please use the 147.000-Granville Repeater PL 127.3 Hz. If that is not reachable from your location, please use the 146.79-Vernon, CT Repeater PL 82.5..

Saturday brought isolated to scattered strong to severe thunderstorms to portions of Rhode Island, Central and Eastern Massachusetts with many reports of hail and large hail and pockets of wind damage in the area. The latest NWS Norton Local Storm Report, WX1BOX Amateur Radio log and WX1BOX Facebook Album can be seen at the following links:

NWS Boston/Norton Local Storm Report:
https://kamala.cod.edu/ma/latest.nwus51.KBOX.html

WX1BOX Amateur Radio Log:
http://wx1box.org/wp-content/uploads/2019/06/reports_6_29_19.txt

WX1BOX Facebook Album:
https://www.facebook.com/pg/wx1box/photos/?tab=album&album_id=2605762652791070

Any late reports or pictures/videos can be sent as a reply to this email, via our WX1BOX Facebook/Twitter feeds or through the email address pics@nsradio.org with credit given to the spotter or Amateur Radio Operator for the report or pictures/videos.

As we look at Sunday, not much change to what has been outlined in previous messages. Wind shear profiles will start off strong but become less favorable in the region, however, cooling aloft will be more significant and that will increase instability parameters and this along with good moisture will allow for more coverage area of thunderstorms than Saturday and this will potentially allow for another round of isolated to scattered strong to severe thunderstorms. The wind threat for Sunday maybe somewhat reduced but the hail threat will be higher and the cold air aloft may also compensate to a degree for the lack of wind shear. Heavy rain for urban and poor drainage flooding and frequent lightning are also likely. The timing of this activity is still in some flux but activity could be in the mid to late morning around 10 AM through the early evening hours of around 600 PM. While all of Southern New England should monitor today’s weather, central and eastern Southern New England have the highest potential for scattered strong to severe thunderstorms today.

SKYWARN Activation with Ops at NWS Boston/Norton will commence by 10 AM Sunday Morning. This will be the last coordination message on Sunday’s severe weather as we shift into operations mode. Below is the NWS Boston/Norton Hazardous Weather Outlook, Enhanced Hazardous Weather Outlook and SPC Day-1 Convective Outlook:

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

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

SPC Day-1 Convective Outlook:
https://www.spc.noaa.gov/products/outlook/day1otlk.html

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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