Storm Coordination Message #4 – Late Sunday Afternoon 1/19/25-Early Monday Morning 1/20/25 Moderate Snowstorm Potential

Hello to all…

..Moderate Snowstorm likely for much of Southern New England late Sunday Afternoon into early Monday Morning followed by bitter cold conditions, the coldest of the season, for several days next week..
..A Winter Storm Warning remains in effect from 1 PM Sunday Afternoon to 7 AM Monday Morning for Hartford, Tolland Counties of Connecticut, Franklin, Hampshire, Hampden, Worcester, Middlesex and Essex Counties of Massachusetts for 4-8″ of snow with isolated higher amounts of up to 10″. The heaviest snow is expected to occur between 6 PM Sunday Evening to 1 AM Monday Morning give or take 1-2 hours..
..A Winter Storm Warning is now in effect from 1 PM Sunday Afternoon to 7 AM Monday Morning Sunday Afternoon to Monday Morning for Windham County Connecticut, Providence County Rhode Island, Norfolk and Suffolk Counties of Massachusetts for 4-8″ of snow. with isolated higher amounts..
..A Winter Weather Advisory is now in effect from 1 PM Sunday Afternoon to 7 AM Monday Morning for Bristol and Plymouth Counties of Massachusetts, Kent, Bristol, Newport and Washington Counties of Rhode Island for 3-6″ of snow with isolated higher amounts. Areas outside of the Winter Storm Warning/Winter Weather Advisory areas could see anywhere from a coating to 3″ of snow and should due to rain at the start mixing and changing to snow. This area should monitor in case an earlier change to snow allows for higher amounts..
..SKYWARN Self-Activation with Amateur Radio Call-Up Nets likely Sunday Evening for in-storm snowfall amounts and Monday Morning for final snowfall amounts. A preliminary Amateur Radio Net schedule for gathering snowfall reports is posted before the warning/advisory info in this message and will be finalized later this afternoon. Pictures and videos of the storm can be sent as a reply to this message, via the WX1BOX Facebook, X and Bluesky feeds or via the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated..

Confidence is higher in a moderate snowstorm for much of Southern New England. Finer details where higher bands of snow could setup remains uncertain and spotter reports will help to point out these areas. There remains high confidence in bitter cold conditions, the coldest of the season, after the storm has passed the region. The headlines depict current thinking with key factors for the moderate snowstorm including:

1.) The track of the storm system is more certain now with a bit more of an offshore solution resulting in Winter Storm Warnings through the Boston to Providence area and Winter Weather advisories for Central and Southern Rhode Island and Southeast Massachusetts north and west of Cape Cod. There remains some variance in the storm track that is a bit larger than usual but the headlines reflect the current thinking.
2.) The intensity of the storm system still has some variance in the models that is a bit larger than usual for being less than 12 hours from the storm start but are more similar than previous runs and coalescing around a solution that would allow for a several hour period of 1-2″ per hour snows with the timeframe for that heaviest snow between 6 PM Sunday Evening and 1 AM Monday Morning give or take 1-2 hours.
3.) The storm is expected to be progressive meaning snow occurring for a 10-15 hour period with the snow starting late Sunday Afternoon heaviest Sunday Evening and overnight ending by early Monday Morning between 6-10 AM. The timing will continue to be monitored.

SKYWARN Self-Activation with Amateur Radio Call-Up Nets likely Sunday Evening for in-storm snowfall amounts and Monday Morning for final snowfall amounts. The Amateur Radio Net schedule for gathering snowfall reports is listed below:

146.940-Mount Tom Repeater: Hourly Nets 6-11 PM Sunday Evening, Final Snowfall Total Nets 7 and 9 AM Monday Morning
146.970-Paxton Repeater: 630 PM, 830 PM, 1030 PM Sunday Evening, Final Snowfall Total Nets at 730 and 930 AM Monday Morning
146.790-Vernon CT Repeater: Nets will be scheduled between 6-11 PM and 700-1000 AM – Exact Net Schedule will be posted in a short coordination message
NB1RI Rhode Island Repeater System: Nets will be scheduled between 6-11 PM and 700-1000 AM – Exact Net Schedule will be posted in a short coordination message
147.225-Windham CT Repeater: Schedule TBD
145.470-Danvers Repeater: Schedule TBD
146.895-Walpole Repeater: 7 PM, 8 PM is the Norfolk County Emergency Preparedness Weekly Net, 9 and/or 10 PM, 7 AM Monday Morning
146.955-Westford Repeater: Schedule TBD
147.180-Bridgewater Repeater: Schedule TBD
147.000-Dartmouth Repeater: Schedule TBD

Pictures and videos of the storm can be sent as a reply to this message, via the WX1BOX Facebook and X feeds or via the email address pics@nsradio.org with credit given to the spotter unless otherwise indicated. This will be the final complete coordination message as we shift into operations mode, a shortened coordination message referring to this message will be posted with the complete SKYWARN Snowfall Reporting Net Schedule. Below is the Winter Storm Warning/Winter Weather Advisory Statement/Snowfall Map, Area Forecast Discussion and Enhanced Hazardous Weather Outlook:

NWS Boston/Norton Winter Storm Warning/Advisory Statement/Snowfall Map:
https://www.weather.gov/box/winter

NWS Boston/Norton Area Forecast Discussion:
https://forecast.weather.gov/product.php?site=NWS&issuedby=BOX&product=AFD&format=CI&version=1&glossary=1&highlight=off

NWS Boston/Norton Enhanced Hazardous Weather Outlook:
https://www.weather.gov/erh/ghwo?wfo=box

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)
Email Address: rmacedo@rcn.com
https://ares.ema.arrl.org
https://www.wx1box.org
Like us on Facebook – https://www.facebook.com/wx1box
Follow us on Twitter – https://twitter.com/wx1box
Subscribe on YouTube – https://www.youtube.com/@wx1box-nwsboston-amateur-radio