Wyoming, Rhode Island 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

930
FXUS61 KBOX 240107
AFDBOX

Area Forecast Discussion
National Weather Service Boston/Norton MA
807 PM EST Tue Dec 23 2025

.WHAT HAS CHANGED...

A special weather statement has been issued for central and
northeast Massachusetts this evening for a period of wet snow.
A Wind Advisory has been put into effect for the east slopes of
The Berkshires and Cape Cod and The Islands starting tomorrow
morning and continuing through early tomorrow afternoon. Strong
northwest wind gusts up to 45 mph will be possible during the
advisory period.

Another brief period of snow will be possible late tomorrow
morning/early tomorrow afternoon over southeast MA.

&&

.KEY MESSAGES...

- 1-2" of wet snow possible tonight across portions of central
  and northeast MA with localized 3" amounts possible near the
  NH border

- Cold front brings gusty winds for Christmas Eve with
  northwest gusts of 35-45mph.

- Ocean effect snow showers may bring accumulating snow to
  portions of southeast MA late tomorrow morning/early tomorrow
  afternoon

- Few rain and/or snow showers on Christmas Day, turning breezy
  northwest winds during the evening and overnight, with wind
  chills on either side of 0F.

- Lower-confidence forecast featuring snow, ice, and rain mix
  beginning late Friday through the weekend.

&&

.DISCUSSION...

KEY MESSAGE 1...1-2" of wet snow possible tonight across
portions of central and northeast MA with localized 3" amounts
possible near the NH border. A cold front brings gusty winds for
Christmas Eve with northwest gusts of 35-45 mph.

We issued a special weather statement for central and northeast
MA...where an inverted surface trough has allowed wet snow to
develop early this evening. We expect this area of low level
convergence to push east of the region near or just after
midnight...bringing an end to the snow. However...1-2" of wet
snow will be possible across parts of this region with localized
3" amounts near the NH border. Marginal temps will result in
many treated roads being wet or just slushy...but bursts of
moderate snow may allow for slippery conditions to develop
especially in the high terrain.

An associated cold front will push through the region after
midnight bringing a cooler/drier air mass into the region.
Additionally, this front will be associated with a robust low-
level jet defined by winds ranging from 35 to 55 knots in the
925-850 hPa layer. Strong CAA should support steep lapse rates
and efficient mixing that will allow gusts from 35-45 mph to mix
to the surface early tomorrow morning through early tomorrow
afternoon.

For most of southern New England, gusts will be strong, but
likely below Wind Advisory criteria as peak 925/850 hPa winds
will be moving overhead during the first half of the morning
when mixing may not be as efficient. Expect gusts to pick up by
the mid-late morning hours as lapse rates steepen. BUFKIT
soundings reveal momentum transfers between 30-40 knots across
the interior and 35-45 knots over the high terrain of The
Berkshires, Cape Cod, and The Islands. For this reason, the
latter locations have been put into a Wind Advisory lasting
from early tomorrow morning through about 3PM tomorrow
afternoon.

KEY MESSAGE 2...Minor snow accumulations possible across
portions of southeast MA tomorrow afternoon.

Surface low-pressure digs southeast from Ontario over The Gulf
of Maine tomorrow morning into tomorrow afternoon. Hi-Res model
guidance supports the development of an inverted trough that may
provide sufficient forcing for some rain/snow showers along the
east coast and The South Shore in particular. Temperatures will
be marginal for snow-fall in the mid 30s, but some heavy wet
flakes or rain will be a possibility between about 10am and 2pm
tomorrow. If surface temperatures are cool enough for snow,
we would expect minimal accumulations <1". Should temperatures
trend cooler and meso-scale forcing trend stronger, we could see
more substantial accumulations. The latest HREF model supports
a 10-20 percent chance of accumulations greater than 1" along
and east of the I-95 corridor in MA tomorrow.

KEY MESSAGE 3...Few rain and/or snow showers on Christmas Day,
turning breezy northwest winds during the evening and overnight,
with wind chills on either side of 0F.

Do not anticipate any significant issues for Christmas Day, cannot
rule out isolated to scattered rain and/or snow showers with the
passage of an 850mb trough and shortwave. With PWATs around 0.5" and
the progressive nature, snow and/or rain showers will be short-lived
between the hours of 6am and noontime. Seasonable temperatures in
the upper 30s and lower 40s, from the southwest flow. Wind direction
becomes northwest early to mid afternoon for the
evening/overnight hours. BUFKIT shows mixing up to 850mb, with
modest CAA, gusts of 30 to 40 mph are possible. Will need to
monitor this as we are nearing criteria for a Wind Advisory.
Otherwise, a chilly night with lows in the teens/single digits
and wind chill temperatures on either side of 0F. Brief high
pressure builds in for Friday with below normal afternoon
temperatures.

KEY MESSAGE 4...Lower-confidence forecast featuring snow, ice, and
rain mix beginning late Friday through the weekend.

There are two time frames to monitor for the potential of impactful
weather conditions; Friday night into Saturday and then late Sunday
into Monday. But, when it comes to exact details, this is where the
uncertainty comes into play. First, a low-pressure system moves out
of the northern Great Plains and through the Midwest, and ejects off
the Mid Atlantic Coast. As the previous forecaster mentioned, there
is varying guidance on the overall track and that remains the case
as of this update. Because of this, there is a vast spread in the
amount of QPF, with the 25th percentile of a few hundredths of an
inch and the 75th percentile of more than half to two-thirds of an
inch. Given the cold air in place, PTypes favor snow, but still time
to watch track development. At this time highest probabilities for
accumulation are across southwest CT and the NYC metro - where there
are 60 to 80 percent probabilites for more than 2" of snow.

Sunday afternoon through early Monday could bring another chance for
wintry weather, but there is much more uncertainty for this
timeframe. These are days 5 and 6, and felt it`s important to
mention because of the amount of people traveling for the holidays.
At this time exact details aren`t available because of the varying
timing and spread of the guidance, but there is potential for mixed
wintry PTypes; snow, ice, and rain mixed.

&&

.AVIATION /01Z WEDNESDAY THROUGH SUNDAY/...
Forecaster Confidence Levels...

Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

00z TAF Update..

Tonight...Moderate confidence.

Low end MVFR to mainly IFR conditions this evening. Areas of
snow this evening across central and interior northeast MA with
a mixture of rain/snow near and southeast of I-95. Bulk of
precipitation exits the coast by 06z with improvement in
cigs/vsbys from west to east. Most locations should be VFR by
12z except areas near the immediate coast. Light S winds early
this evening shift to the WNW toward daybreak and begin to gust
between 20 and 30 knots.

Wednesday...

Mainly VFR...but a brief period of scattered snow showers
perhaps briefly mixed with rain will impact areas near the
eastern MA coast roughly between 15z and 22z. These may be
accompanied by periods of MVFR ceilings and perhaps even brief
IFR conditions in the snow showers especially Plymouth county
from ocean enhancement. NW wind gusts of 30 to 40 knots
expected. Gusty winds are largely expected during the first half
of the day and should settle down between 18-00Z.

Tomorrow Night...High Confidence

VFR. Winds becoming light out of the west/southwest.

KBOS Terminal...Moderate confidence in TAF. Rain and snow mixed
this evening through about 06z...but runways should remain wet.

KBDL Terminal...Moderate confidence in TAF.

Outlook /Thursday through Sunday/...

Christmas Day: VFR. Breezy. Slight chance SN.

Thursday Night: VFR. Windy with local gusts up to 30 kt.

Friday: VFR. Breezy.

Friday Night: Mainly VFR, with local IFR possible. Chance SN.

Saturday: Mainly VFR, with local MVFR possible. Chance SN.

Saturday Night: VFR. Slight chance SN.

Sunday: Mainly VFR, with local IFR possible. Breezy. RA likely,
chance SN.

&&

.MARINE...
Forecaster Confidence Levels...

Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

GALE WARNING IN EFFECT FOR WEDNESDAY


A cold front will bring gale-force winds to the waters starting
early Wednesday morning through Wednesday afternoon. Winds shift to
the NNW, gusting 30-45 knots beginning before sunrise through
the early afternoon. High winds bring rough seas with 6-10 foot
waves away from the coasts and sounds.

Winds gradually diminish on Wednesday night with seas of 3-6 feet.

Outlook /Thursday through Sunday/...

Christmas Day: Moderate risk for Small Craft Advisory winds
with gusts up to 30 kt. Areas of rough seas. Chance of rain,
chance of snow.

Thursday Night: Strong winds with gusts up to 30 kt. Rough seas
up to 10 ft. Chance of freezing spray.

Friday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Areas of rough seas. Chance of freezing spray.

Friday Night: Winds less than 25 kt. Areas of seas approaching
5 ft. Chance of snow. Local visibility 1 nm or less.

Saturday: Winds less than 25 kt. Seas up to 5 ft. Chance of
snow, slight chance of rain.

Saturday Night: Winds less than 25 kt. Areas of seas
approaching 5 ft. Slight chance of rain, slight chance of snow.

Sunday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Rain likely.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...Wind Advisory from 3 AM to noon EST Wednesday for MAZ002-008-
     009.
     Wind Advisory from 7 AM to 3 PM EST Wednesday for MAZ022>024.
RI...None.
MARINE...Gale Warning from 5 AM to 3 PM EST Wednesday for ANZ230>237-
     250-251-254>256.

&&

$$

DISCUSSION...Frank/RM/Dooley
AVIATION...Frank/RM
MARINE...RM