Small Craft Advisory 39, NWS Boston/Norton, MA

794 
WHUS71 KBOX 011739
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
139 PM EDT Wed Apr 1 2026

ANZ232>234-020700-
/O.CAN.KBOX.SC.Y.0037.000000T0000Z-260401T2300Z/
/O.EXB.KBOX.SC.Y.0039.260402T0000Z-260403T0000Z/
Nantucket Sound-Vineyard Sound-Buzzards Bay-
139 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 8 PM
EDT THURSDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and 
  seas 2 to 4 feet expected.

* WHERE...Nantucket Sound, Vineyard Sound and Buzzards Bay.

* WHEN...From 8 PM this evening to 8 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ236-011845-
/O.CAN.KBOX.SC.Y.0038.000000T0000Z-260401T1800Z/
Narragansett Bay-
139 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY IS CANCELLED...

$$

ANZ231-251-020700-
/O.EXB.KBOX.SC.Y.0039.260402T0600Z-260403T0000Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
139 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 2 AM TO 8 PM EDT
THURSDAY...

* WHAT...Northeast winds 15 to 20 kt with gusts up to 25 kt and 
  seas 2 to 4 feet expected.

* WHERE...Cape Cod Bay and Massachusetts Bay and Ipswich Bay.

* WHEN...From 2 AM to 8 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ255-256-020700-
/O.EXT.KBOX.SC.Y.0037.000000T0000Z-260403T0600Z/
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
139 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 AM EDT FRIDAY...

* WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and 
  seas 6 to 9 feet.

* WHERE...In Massachusetts coastal waters, Coastal Waters 
  extending out to 25 nm South of Marthas Vineyard and 
  Nantucket. In Rhode Island coastal waters, Coastal Waters from 
  Montauk NY to Marthas Vineyard extending out to 20 nm South of 
  Block Island.

* WHEN...Until 2 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ254-020700-
/O.EXT.KBOX.SC.Y.0037.000000T0000Z-260403T0600Z/
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
139 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 AM EDT FRIDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and 
  seas 4 to 7 feet.

* WHERE...Coastal waters from Provincetown MA to Chatham MA to 
  Nantucket MA out 20 nm.

* WHEN...Until 2 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ235-237-020700-
/O.EXT.KBOX.SC.Y.0037.000000T0000Z-260403T0000Z/
Rhode Island Sound-Block Island Sound-
139 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 8 PM EDT THURSDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 30 kt and 
  seas 4 to 7 feet.

* WHERE...Rhode Island Sound and Block Island Sound.

* WHEN...Until 8 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ250-020700-
/O.EXT.KBOX.SC.Y.0039.260402T0600Z-260403T0000Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
139 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 2 AM TO 8 PM EDT
THURSDAY...

* WHAT...Northeast winds 15 to 20 kt with gusts up to 25 kt and 
  seas 3 to 5 feet expected.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary.

* WHEN...From 2 AM to 8 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

088 
WHUS71 KBOX 011848
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
248 PM EDT Wed Apr 1 2026

ANZ255-256-020800-
/O.CON.KBOX.SC.Y.0037.000000T0000Z-260403T0600Z/
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
248 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT FRIDAY...

* WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and 
  seas 5 to 8 feet.

* WHERE...In Massachusetts coastal waters, Coastal Waters 
  extending out to 25 nm South of Marthas Vineyard and 
  Nantucket. In Rhode Island coastal waters, Coastal Waters from 
  Montauk NY to Marthas Vineyard extending out to 20 nm South of 
  Block Island.

* WHEN...Until 2 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ254-020800-
/O.CON.KBOX.SC.Y.0037.000000T0000Z-260403T0600Z/
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
248 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT FRIDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and 
  seas 4 to 7 feet.

* WHERE...Coastal waters from Provincetown MA to Chatham MA to 
  Nantucket MA out 20 nm.

* WHEN...Until 2 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ232>234-020800-
/O.CON.KBOX.SC.Y.0039.260402T0000Z-260403T0000Z/
Nantucket Sound-Vineyard Sound-Buzzards Bay-
248 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING
TO 8 PM EDT THURSDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 25 kt and 
  seas 2 to 4 feet expected.

* WHERE...Nantucket Sound, Vineyard Sound and Buzzards Bay.

* WHEN...From 8 PM this evening to 8 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ235-237-020800-
/O.CON.KBOX.SC.Y.0037.000000T0000Z-260403T0000Z/
Rhode Island Sound-Block Island Sound-
248 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT
THURSDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 30 kt and 
  seas 4 to 7 feet.

* WHERE...Rhode Island Sound and Block Island Sound.

* WHEN...Until 8 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ250-020800-
/O.CON.KBOX.SC.Y.0039.260402T0600Z-260403T0000Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
248 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 PM EDT
THURSDAY...

* WHAT...Northeast winds 15 to 20 kt with gusts up to 25 kt and 
  seas 3 to 5 feet expected.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary.

* WHEN...From 2 AM to 8 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ231-251-020800-
/O.CON.KBOX.SC.Y.0039.260402T0600Z-260403T0000Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
248 PM EDT Wed Apr 1 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 PM EDT
THURSDAY...

* WHAT...Northeast winds 15 to 20 kt with gusts up to 25 kt and 
  seas 2 to 4 feet expected.

* WHERE...Cape Cod Bay and Massachusetts Bay and Ipswich Bay.

* WHEN...From 2 AM to 8 PM EDT Thursday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

700 
WHUS71 KBOX 020509
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
109 AM EDT Thu Apr 2 2026

ANZ235-237-022000-
/O.EXT.KBOX.SC.Y.0037.000000T0000Z-260403T0300Z/
Rhode Island Sound-Block Island Sound-
109 AM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

* WHAT...Northeast winds 15 to 20 kt with gusts up to 30 kt and 
  seas 3 to 5 feet.

* WHERE...Rhode Island Sound and Block Island Sound.

* WHEN...Until 11 PM EDT this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ250-022000-
/O.EXT.KBOX.SC.Y.0039.260402T0600Z-260403T1000Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
109 AM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 AM EDT FRIDAY...

* WHAT...East winds 10 to 20 kt with gusts up to 25 kt and seas 
  3 to 5 feet expected.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary.

* WHEN...Until 6 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ255-256-022000-
/O.CON.KBOX.SC.Y.0037.000000T0000Z-260403T0600Z/
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
109 AM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT FRIDAY...

* WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and 
  seas 4 to 6 feet.

* WHERE...In Massachusetts coastal waters, Coastal Waters 
  extending out to 25 nm South of Marthas Vineyard and 
  Nantucket. In Rhode Island coastal waters, Coastal Waters from 
  Montauk NY to Marthas Vineyard extending out to 20 nm South of 
  Block Island.

* WHEN...Until 2 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ254-022000-
/O.CON.KBOX.SC.Y.0037.000000T0000Z-260403T0600Z/
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
109 AM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT FRIDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 30 kt and 
  seas 4 to 6 feet.

* WHERE...Coastal waters from Provincetown MA to Chatham MA to 
  Nantucket MA out 20 nm.

* WHEN...Until 2 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ232>234-022000-
/O.CON.KBOX.SC.Y.0039.000000T0000Z-260403T0000Z/
Nantucket Sound-Vineyard Sound-Buzzards Bay-
109 AM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...Northeast winds 15 to 20 kt with gusts up to 30 kt and 
  seas 2 to 4 feet.

* WHERE...Nantucket Sound, Vineyard Sound and Buzzards Bay.

* WHEN...Until 8 PM EDT this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ231-251-022000-
/O.CON.KBOX.SC.Y.0039.260402T0600Z-260403T0000Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
109 AM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...Northeast winds 15 to 20 kt with gusts up to 25 kt and 
  seas 2 to 4 feet expected.

* WHERE...Cape Cod Bay and Massachusetts Bay and Ipswich Bay.

* WHEN...Until 8 PM EDT this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

533 
WHUS71 KBOX 021924
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
324 PM EDT Thu Apr 2 2026

ANZ255-256-030600-
/O.CON.KBOX.SC.Y.0037.000000T0000Z-260403T0600Z/
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
324 PM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT FRIDAY...

* WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and 
  seas 4 to 6 feet.

* WHERE...In Massachusetts coastal waters, Coastal Waters 
  extending out to 25 nm South of Marthas Vineyard and 
  Nantucket. In Rhode Island coastal waters, Coastal Waters from 
  Montauk NY to Marthas Vineyard extending out to 20 nm South of 
  Block Island.

* WHEN...Until 2 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ254-030600-
/O.CON.KBOX.SC.Y.0037.000000T0000Z-260403T0600Z/
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
324 PM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT FRIDAY...

* WHAT...Northeast winds 10 to 20 kt with gusts up to 30 kt and 
  seas 4 to 6 feet.

* WHERE...Coastal waters from Provincetown MA to Chatham MA to 
  Nantucket MA out 20 nm.

* WHEN...Until 2 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ232>234-030000-
/O.CON.KBOX.SC.Y.0039.000000T0000Z-260403T0000Z/
Nantucket Sound-Vineyard Sound-Buzzards Bay-
324 PM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...Northeast winds 15 to 20 kt with gusts up to 30 kt and 
  seas 2 to 4 feet.

* WHERE...Nantucket Sound, Vineyard Sound and Buzzards Bay.

* WHEN...Until 8 PM EDT this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ235-237-030300-
/O.CON.KBOX.SC.Y.0037.000000T0000Z-260403T0300Z/
Rhode Island Sound-Block Island Sound-
324 PM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

* WHAT...Northeast winds 15 to 20 kt with gusts up to 30 kt and 
  seas 3 to 5 feet.

* WHERE...Rhode Island Sound and Block Island Sound.

* WHEN...Until 11 PM EDT this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ250-030830-
/O.CON.KBOX.SC.Y.0039.000000T0000Z-260403T1000Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
324 PM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT FRIDAY...

* WHAT...East winds 10 to 20 kt with gusts up to 25 kt and seas 
  3 to 5 feet expected.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary.

* WHEN...Until 6 AM EDT Friday.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

ANZ231-251-030000-
/O.CON.KBOX.SC.Y.0039.000000T0000Z-260403T0000Z/
Cape Cod Bay-Massachusetts Bay and Ipswich Bay-
324 PM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

* WHAT...Northeast winds 15 to 20 kt with gusts up to 25 kt and 
  seas 2 to 4 feet expected.

* WHERE...Cape Cod Bay and Massachusetts Bay and Ipswich Bay.

* WHEN...Until 8 PM EDT this evening.

* IMPACTS...Conditions will be hazardous to small craft.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.

&&

$$

747 
WHUS71 KBOX 030342
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
1142 PM EDT Thu Apr 2 2026

ANZ254>256-030445-
/O.CAN.KBOX.SC.Y.0037.000000T0000Z-260403T0600Z/
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
Coastal Waters extending out to 25 nm South of Marthas Vineyard
and Nantucket-
Coastal Waters from Montauk NY to Marthas Vineyard extending out
to 20 nm South of Block Island-
1142 PM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY IS CANCELLED...


$$

ANZ250-030445-
/O.CAN.KBOX.SC.Y.0039.000000T0000Z-260403T1000Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
1142 PM EDT Thu Apr 2 2026

...SMALL CRAFT ADVISORY IS CANCELLED...



$$

Area Forecast Discussion
National Weather Service Boston/Norton MA
733 PM EDT Tue Mar 31 2026

.WHAT HAS CHANGED...
Updated Aviation section.

There is a marginal risk for a strong to severe thunderstorm
this evening, mainly across western MA and CT.

&&

.KEY MESSAGES...

- Scattered showers and thunderstorms this evening with a strong to
severe storm possible over western MA

- Unsettled weather continues into Wednesday and Wednesday Night

- Milder and unsettled pattern later this week brings showers from
time to time along with warmer temperatures for inland locations.

&&

.DISCUSSION...
KEY MESSAGE 1...Scattered showers and thunderstorms this evening
with a strong to severe storm possible over western MA

Short-wave energy embedded within larger scale zonal flow aloft
will help trigger showers and thunderstorms this evening over
western MA/CT. The latest Convective Outlook from The Storm
Prediction Center places western MA and CT in a marginal risk
for severe storm with a general thunderstorm risk elsewhere in
southern New England.

The overall strength of synoptic forcing for ascent in the
atmosphere will be on the weak side tonight. Furthermore,
instability will be limited to the tune of 250-500 J/Kg of
MLCAPE. While sufficient for thunderstorm development, these
numbers do not present an alarming scenario for severe weather.
Deep layer shear will be strong with 40-50 knots of shear in
the 0-6 km layer. Thus, we have the ingredients needed for a
period of convection.

If we consult the latest suite of hi- resolution model
guidance, we find that 00-06Z (8PM-2AM), will be the best
opportunity for thunderstorms across southern New England. Hi-
res guidance keeps the most robust activity mainly along and
north of the I-90 corridor. CSU ML probabilities give a 5-10%
chance of severe thunderstorm wind gusts or large hail for
western MA. Further east, lightning and periods of heavy
rainfall would be the most likely hazards. Expect thunderstorm activity
to wane after midnight as instability diminishes.

KEY MESSAGE 2...Unsettled weather continues into Wednesday and
Wednesday Night

A wind shift to the west/southwest early Wednesday will support
another mild afternoon in southern New England with many
locations reaching the upper 60s to low 70s. The presence of a
frontal wave moving over The Northeast will continue to keep
things unsettled with intermittent periods of showers expected
during the day Wednesday. A lull in shower activity is expected
Wednesday afternoon, but a cold front sagging south will
support an additional round of showers Wednesday night into
Thursday, mainly along and south of the I-90 corridor. Latest
model guidance resolves the most shower activity over the south
coast of MA and RI. Chillier temperatures settle in Wednesday
night with lows temperatures falling to the 30s by Thursday
morning.

KEY MESSAGE 3...Milder and unsettled pattern later this week brings
showers from time to time along with warmer temperatures for inland
locations.

Beyond Wednesday we're in for a big cooldown as 1040mb high pressure
moves into Nova Scotia and surface winds veer to the northeast
pushing a cold front the rest of the way through the region. This,
combined with stubborn low clouds will keep high temperatures very
cold compared to Wednesday, in the upper 30s and low 40s. This will
be a 30 degree difference in high temperatures for some locations!
The roller coaster continues on Friday as the front lifts back to
the north bringing warmer temps in the 60s and even some 70s by the
weekend. That being said, it remains a very chaotic and dynamic
pattern with SNE sandwiched between a subtropical ridge and east
coast trough so confidence in the temperature forecast is low to
moderate. Same with exact timing and placement of any rainfall
associated with these frontal passages and passing shortwaves. A
generally unsettled pattern with scattered rain showers looks to
hold on through the early part of the weekend before a more
appreciable front and mid level trough move through around
Sunday/Sunday night.

&&

.AVIATION /00Z WEDNESDAY THROUGH SUNDAY/...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.

00Z TAF Update...Moderate confidence.

Backdoor front was settling near a line from ORE-PVD this
evening. MVFR/IFR ceilings with NE winds in its wake will
improve overnight once front lifts back to north. VFR to west of
front with S winds. Watching TSRA moving through eastern NY
which should weaken as it reaches SNE, mainly bringing SHRA and
an embedded TS along and north of I-90 until around midnight.

LLWS expected overnight, especially near coast, with 020 winds
230-240/50-60kt.

Scattered showers expected Wed morning with S/SW winds, then
backdoor front once again drops S during afternoon and evening,
this time to more of southern New England, with wind shift to
N/NE and lowering ceilings to MVFR/IFR. Also expecting a period
of showers, mainly focused near South Coast, later in day.

KBOS Terminal...Moderate confidence in TAF. Timing of
improvement later tonight may be too quick and there is lower
confidence on whether or not IFR cigs return Wed afternoon.

KBDL Terminal...Moderate confidence in TAF but low confidence in
timing of any isolated t-storm risk.

Outlook /Wednesday Night through Sunday/...

Thursday: Mainly MVFR, with areas IFR possible. Breezy. Chance
RA, FZRA likely.

Thursday Night: Mainly MVFR, with areas IFR possible. Chance
RA.

Friday: Mainly VFR, with local IFR possible. Breezy.

Friday Night through Saturday: Breezy. Slight chance RA.

Saturday Night: Breezy. Chance RA.

Sunday: Windy with local gusts up to 30 kt. RA likely.

&&

.MARINE...
Forecaster Confidence Levels...

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

Moderate southwest winds overnight between 15 and 25 knots with
strongest winds over the outer south coastal waters. A few
marginal gale force gusts are possible. SCY in place through
tomorrow night. Seas remain elevated over the southern marine
zones as well but gradually subside from 7-10 feet Wednesday
morning to 4-6 feet by Wednesday evening. Winds shift to the
northeast Wednesday night into Thursday but remain moderately
strong with sustained winds between 15 and 20 knots.

Outlook /Wednesday Night through Sunday/...

Thursday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Seas up to 5 ft. Chance of rain.

Thursday Night: Winds less than 25 kt. Areas of seas
approaching 5 ft. Chance of rain.

Friday: Low risk for Small Craft Advisory winds with gusts up
to 25 kt. Areas of seas approaching 5 ft.

Friday Night: Moderate risk for Small Craft Advisory winds with
gusts up to 25 kt. Seas up to 5 ft.

Saturday: Winds less than 25 kt. Areas of seas approaching
5 ft.

Saturday Night: Low risk for Small Craft Advisory winds with
local gusts up to 30 kt. Seas up to 5 ft. Slight chance of
rain.

Sunday: Strong winds with gusts up to 30 kt. Areas of rough
seas. Chance of rain.

&&

.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Small Craft Advisory until 8 PM EDT this evening for ANZ231-
     250.
     Small Craft Advisory until 7 PM EDT Wednesday for ANZ232>235-
     237.
     Small Craft Advisory until 2 PM EDT Wednesday for ANZ236.
     Small Craft Advisory until 6 AM EDT Thursday for ANZ254>256.

&&

DISCUSSION...BW/RM
AVIATION...JWD
MARINE...RM

Preliminary Local Storm Report
National Weather Service Boston/Norton MA
922 PM EDT Tue Mar 31 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0906 PM     Lightning        1 NNE Turners Falls     42.61N 72.55W
03/31/2026                   Franklin           MA   Fire Dept/Rescue

            Lightning struck a tree which is downed on
            powerline wires on Main Rd in Gill. Relayed
            by amateur radio.

&&

AL

Preliminary Local Storm Report
National Weather Service Boston/Norton MA
950 PM EDT Tue Mar 31 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0910 PM     Tstm Wnd Dmg     2 SSE Buckland          42.58N 72.78W
03/31/2026                   Franklin           MA   Law Enforcement

            Tree downed on east buckland rd in Buckland.
            Relayed by amateur radio.

&&

AL

Preliminary Local Storm Report
National Weather Service Boston/Norton MA
957 PM EDT Tue Mar 31 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0850 PM     Tstm Wnd Dmg     3 WNW Buckland          42.62N 72.83W
03/31/2026                   Franklin           MA   Law Enforcement

            Tree down blocking Route 2 around mile
            marker 26 near Charlemont. Relayed by
            amateur radio.

&&

AL

Preliminary Local Storm Report
National Weather Service Boston/Norton MA
958 PM EDT Tue Mar 31 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 PM     Tstm Wnd Dmg     2 SSE Buckland          42.58N 72.78W
03/31/2026                   Franklin           MA   Law Enforcement

            Corrects previous tstm wnd dmg report from 2
            SSE Buckland for time. Tree downed on east
            buckland rd in Buckland. Relayed by amateur
            radio.

&&

AL