7:08AM
DAYS 1-5 (NOVEMBER 15-19)
A very cold air mass for mid November is now in place and sets the stage for the first general measurable snowfall of the season for much of the region, however there will be a few exceptions and that is portions of Cape Cod and the Islands and immediate eastern shore which may see nothing if the wind is already east at the onset of precipitation. The low pressure area responsible for this event is going to track toward southern New England from the southwest as an already mature system, occluding and starting to redevelop east of itself as it delivers its front-end snow/mix to this area. The old low will still pack a bit of a punch as it goes by, probably passing just south of Boston, during Friday. A lot will have taken place between now and then, however, including a few to several inches of snow mainly over the interior, a period of sleet, and then an eventual change to rain pretty much everywhere, although by the time that happens we may have seen a dry slot move in and much of the precipitation shut down for a while before resuming with the passage of the primary storm system Friday. By the time we get to midday Friday, it’s all getting ready to shut down, ending with a burst of rain showers except rain or snow showers to the northwest and a shifting, gusty wind. After this the weekend is much more quiet, starting a bit breezy Saturday but dry and fairly bright, before clouds return ahead of a disturbance on Sunday, which may bring some light rain/snow to the region as early as Sunday night. This system will exit during Monday, which likely starts unsettled with a bit of rain/snow then ends with fair weather having returned. Forecast details…
TODAY: Increasing cloudiness. Highs 35-42. Wind light variable.
TONIGHT: Overcast. Snow, except mix/rain Cape Cod, developing south to north evening and continuing overnight, changing first to sleet in many areas interior and rain coastal areas, then rain all areas except pockets of freezing rain central MA and interior southern NH. Snow accumulation before changeover under 2 inches coastline and Cape Cod, 2-4 inches most areas, except 4-8 inches higher elevations of northern RI, central MA, and southern NH. Lows 22-30 evening, rising slowly overnight. Wind light N interior areas, E 5-15 MPH elsewhere evening, E 10-20 MPH all areas overnight.
FRIDAY: Overcast with rain, pockets of freezing rain valleys of north central MA and southwestern NH early. Rain tapering off late-day. Highs 37-44. Wind E increasing to 15-30 MPH with higher gusts, however shifting to briefly to SW similar speeds from near the Cape Cod Canal southeastward, shifting to N 10-20 MPH during the day, higher gusts.
FRIDAY NIGHT: Partly cloudy. Watch for icy patches on remaining wet ground and a freeze up of any remaining slushy snow. Lows 28-35. Wind NW 5-15 MPH, higher gusts.
SATURDAY: Mostly sunny. Highs 40-47. Wind NW 10-20 MPH.
SUNDAY: Increasing clouds. PM light rain/snow possible. Lows in the 20s. Highs from the upper 30s to lower 40s.
MONDAY: Decreasing clouds. AM light snow/rain possible. Lows in the 30s. Highs in the 40s.
DAYS 6-10 (NOVEMBER 20-24)
Mainly dry weather is expected during this period with a moisture-starved frontal system reinforcing some chilly air just prior to Thanksgiving then high pressure sliding off to the east and allowing moderating temperatures later in the period.
DAYS 11-15 (NOVEMBER 25-29)
Watch for a wet weather event, likely rain as we’ll be milder in the region, most likely occurring between late November 25 and early November 27 during a transitional pattern as we watch for the possibility of a Colorado Low to tap some Gulf of Mexico moisture. If this system occurs, rain will be favored due to milder air in place. Dry weather and a colder trend for later in the period as we enter a pattern dominated by the polar jet stream.