Alert archive / Massachusetts / Storm Watches in 2021

Storm Watch 1, NWS Boston/Norton, MA

January 31, 2021

NWS Boston/Norton, MA issued this storm watch at Jan 31, 2021, 3:50 AM EST. It took effect at Feb 1, 2021, 7:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Jan 31, 2021, 3:50 AM EST (08:50 UTC)
In effect from
Feb 1, 2021, 7:00 AM EST
Expired
Jan 31, 2021, 3:39 PM EST
In force
Issued by
NWS Boston/Norton, MA

The text

As transmitted.

860 
WHUS71 KBOX 310850
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
350 AM EST Sun Jan 31 2021

ANZ250-254-311700-
/O.CON.KBOX.SC.Y.0010.000000T0000Z-210201T0000Z/
/O.CAN.KBOX.GL.A.0004.210201T1200Z-210202T2100Z/
/O.NEW.KBOX.SR.A.0001.210201T1200Z-210202T2100Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
350 AM EST Sun Jan 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...STORM WATCH IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
AFTERNOON...
...GALE WATCH IS CANCELLED...

* WHAT...For the Small Craft Advisory, north winds 10 to 15 kt 
  and seas 4 to 7 feet. For the Storm Watch, northeast winds 30 
  to 40 kt with gusts up to 55 kt and seas 16 to 21 feet 
  possible.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary and Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 nm.

* WHEN...For the Small Craft Advisory, until 7 PM EST this 
  evening. For the Storm Watch, from Monday morning through 
  Tuesday afternoon.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should prepare to remain in port, alter course, and/or
secure the vessel for severe conditions before conditions
deteriorate.

&&

$$

ANZ255-256-311700-
/O.CON.KBOX.SC.Y.0010.000000T0000Z-210131T1800Z/
/O.CAN.KBOX.GL.A.0004.210201T1200Z-210202T2100Z/
/O.NEW.KBOX.SR.A.0001.210201T1200Z-210202T2100Z/
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-
350 AM EST Sun Jan 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
...STORM WATCH IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
AFTERNOON...
...GALE WATCH IS CANCELLED...

* WHAT...For the Small Craft Advisory, north winds 5 to 10 kt 
  and seas 3 to 5 feet. For the Storm Watch, northeast winds 25 
  to 35 kt with gusts up to 55 kt and seas 11 to 16 feet 
  possible.

* 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...For the Small Craft Advisory, until 1 PM EST this 
  afternoon. For the Storm Watch, from Monday morning through 
  Tuesday afternoon.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should prepare to remain in port, alter course, and/or
secure the vessel for severe conditions before conditions
deteriorate.

&&

$$

ANZ251-311700-
/O.CON.KBOX.SC.Y.0010.000000T0000Z-210131T1200Z/
/O.CON.KBOX.GL.A.0004.210201T1200Z-210202T2100Z/
Massachusetts Bay and Ipswich Bay-
350 AM EST Sun Jan 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST THIS
MORNING...
...GALE WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY AFTERNOON...

* WHAT...For the Small Craft Advisory, northwest winds 10 to 15 
  kt with gusts up to 25 kt and seas 2 to 4 feet. For the Gale 
  Watch, east winds 20 to 30 kt with gusts up to 40 kt and seas 
  4 to 6 feet possible.

* WHERE...Massachusetts Bay and Ipswich Bay.

* WHEN...For the Small Craft Advisory, until 7 AM EST Sunday. 
  For the Gale Watch, from Monday morning through Tuesday 
  afternoon.

* IMPACTS...Strong winds can cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and seas.

&&

$$

ANZ236-311700-
/O.EXA.KBOX.GL.A.0004.210201T1200Z-210202T2100Z/
Narragansett Bay-
350 AM EST Sun Jan 31 2021

...GALE WATCH IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
AFTERNOON...

* WHAT...For the Small Craft Advisory, northwest winds 10 to 15 
  kt with gusts up to 25 kt and seas 2 to 4 feet. For the Gale 
  Watch, east winds 20 to 30 kt with gusts up to 40 kt and seas 
  4 to 6 feet possible.

* WHERE...Narragansett Bay.

* WHEN...For the Small Craft Advisory, until 7 PM EST this 
  evening. For the Gale Watch, from Monday morning through 
  Tuesday afternoon.

* IMPACTS...Strong winds can cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and seas.

&&

$$

ANZ230-311700-
/O.EXT.KBOX.GL.A.0004.210201T1200Z-210202T2100Z/
Boston Harbor-
350 AM EST Sun Jan 31 2021

...GALE WATCH NOW IN EFFECT FROM MONDAY MORNING THROUGH TUESDAY
AFTERNOON...

* WHAT...For the Small Craft Advisory, northwest winds 10 to 15 
  kt with gusts up to 25 kt and seas 2 to 4 feet. For the Gale 
  Watch, east winds 20 to 30 kt with gusts up to 40 kt and seas 
  4 to 6 feet possible.

* WHERE...Boston Harbor.

* WHEN...From Monday morning through Tuesday afternoon.

* IMPACTS...Strong winds can cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and seas.

&&

$$

ANZ231>235-237-311700-
/O.CON.KBOX.GL.A.0004.210201T1200Z-210202T2100Z/
Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay-
Rhode Island Sound-Block Island Sound-
350 AM EST Sun Jan 31 2021

...GALE WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY AFTERNOON...

* WHAT...For the Small Craft Advisory, northwest winds 10 to 15 
  kt with gusts up to 25 kt and seas 2 to 4 feet. For the Gale 
  Watch, east winds 20 to 30 kt with gusts up to 40 kt and seas 
  4 to 6 feet possible.

* WHERE...Nantucket Sound.

* WHEN...For the Small Craft Advisory, until 7 PM EST this 
  evening. For the Gale Watch, from Monday morning through 
  Tuesday afternoon.

* IMPACTS...Strong winds can cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and seas.

&&

$$
2 follow-up statements
864 
WHUS71 KBOX 311526
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
1026 AM EST Sun Jan 31 2021

ANZ250-254-312330-
/O.CON.KBOX.SC.Y.0010.000000T0000Z-210201T0000Z/
/O.CON.KBOX.SR.A.0001.210201T1200Z-210202T2100Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
1026 AM EST Sun Jan 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM EST THIS
EVENING...
...STORM WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY AFTERNOON...

* WHAT...For the Small Craft Advisory, north winds 10 to 15 kt 
  and seas 4 to 7 feet. For the Storm Watch, northeast winds 30 
  to 40 kt with gusts up to 55 kt and seas 16 to 21 feet 
  possible.

* WHERE...Coastal waters east of Ipswich Bay and the Stellwagen 
  Bank National Marine Sanctuary and Coastal waters from 
  Provincetown MA to Chatham MA to Nantucket MA out 20 nm.

* WHEN...For the Small Craft Advisory, until 7 PM EST this 
  evening. For the Storm Watch, from Monday morning through 
  Tuesday afternoon.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should prepare to remain in port, alter course, and/or
secure the vessel for severe conditions before conditions
deteriorate.

&&

$$

ANZ255-256-312330-
/O.CON.KBOX.SC.Y.0010.000000T0000Z-210131T1800Z/
/O.CON.KBOX.SR.A.0001.210201T1200Z-210202T2100Z/
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-
1026 AM EST Sun Jan 31 2021

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 PM EST THIS
AFTERNOON...
...STORM WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY AFTERNOON...

* WHAT...For the Small Craft Advisory, north winds 5 to 10 kt 
  and seas 3 to 5 feet. For the Storm Watch, northeast winds 25 
  to 35 kt with gusts up to 55 kt and seas 11 to 16 feet 
  possible.

* 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...For the Small Craft Advisory, until 1 PM EST this 
  afternoon. For the Storm Watch, from Monday morning through 
  Tuesday afternoon.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should prepare to remain in port, alter course, and/or
secure the vessel for severe conditions before conditions
deteriorate.

&&

$$

ANZ230>237-251-312330-
/O.CON.KBOX.GL.A.0004.210201T1200Z-210202T2100Z/
Boston Harbor-Cape Cod Bay-Nantucket Sound-Vineyard Sound-
Buzzards Bay-Rhode Island Sound-Narragansett Bay-
Block Island Sound-Massachusetts Bay and Ipswich Bay-
1026 AM EST Sun Jan 31 2021

...GALE WATCH REMAINS IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY AFTERNOON...

* WHAT...For the Small Craft Advisory, northwest winds 10 to 15 
  kt with gusts up to 25 kt and seas 2 to 4 feet. For the Gale 
  Watch, east winds 20 to 30 kt with gusts up to 40 kt and seas 
  4 to 6 feet possible.

* WHERE...Nantucket Sound.

* WHEN...For the Small Craft Advisory, until 7 PM EST this 
  evening. For the Gale Watch, from Monday morning through 
  Tuesday afternoon.

* IMPACTS...Strong winds can cause hazardous seas which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should consider altering plans to avoid possible
hazardous conditions.  Remain in port, seek safe harbor, alter
course, and/or secure the vessel for severe wind and seas.

&&

$$
625 
WHUS71 KBOX 312039
MWWBOX

URGENT - MARINE WEATHER MESSAGE
National Weather Service Boston/Norton MA
339 PM EST Sun Jan 31 2021

ANZ254-010845-
/O.CAN.KBOX.SC.Y.0010.000000T0000Z-210201T0000Z/
/O.UPG.KBOX.SR.A.0001.210201T1200Z-210202T2100Z/
/O.NEW.KBOX.SR.W.0001.210201T1700Z-210202T0800Z/
Coastal waters from Provincetown MA to Chatham MA to Nantucket MA
out 20 nm-
339 PM EST Sun Jan 31 2021

...STORM WARNING IN EFFECT FROM NOON MONDAY TO 3 AM EST TUESDAY...
...SMALL CRAFT ADVISORY IS CANCELLED...

* WHAT...East winds 25 to 35 kt with gusts up to 55 kt and seas 
  19 to 24 feet expected.

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

* WHEN...From noon Monday to 3 AM EST Tuesday.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ250-010845-
/O.CAN.KBOX.SC.Y.0010.000000T0000Z-210201T0000Z/
/O.UPG.KBOX.SR.A.0001.210201T1200Z-210202T2100Z/
/O.NEW.KBOX.SR.W.0001.210201T2300Z-210202T1200Z/
Coastal waters east of Ipswich Bay and the Stellwagen Bank
National Marine Sanctuary-
339 PM EST Sun Jan 31 2021

...STORM WARNING IN EFFECT FROM 6 PM MONDAY TO 7 AM EST TUESDAY...
...SMALL CRAFT ADVISORY IS CANCELLED...

* WHAT...Northeast winds 30 to 40 kt with gusts up to 55 kt and 
  seas 19 to 24 feet expected.

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

* WHEN...From 6 PM Monday to 7 AM EST Tuesday.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ236-010845-
/O.UPG.KBOX.GL.A.0004.210201T1200Z-210202T2100Z/
/O.NEW.KBOX.GL.W.0006.210201T1700Z-210202T0700Z/
Narragansett Bay-
339 PM EST Sun Jan 31 2021

...GALE WARNING IN EFFECT FROM NOON MONDAY TO 2 AM EST TUESDAY...

* WHAT...Northeast winds 15 to 25 kt with gusts up to 45 kt and 
  waves 4 to 7 feet expected.

* WHERE...Narragansett Bay.

* WHEN...From noon Monday to 2 AM EST Tuesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ230-010845-
/O.UPG.KBOX.GL.A.0004.210201T1200Z-210202T2100Z/
/O.NEW.KBOX.GL.W.0006.210201T1800Z-210202T1800Z/
Boston Harbor-
339 PM EST Sun Jan 31 2021

...GALE WARNING IN EFFECT FROM 1 PM MONDAY TO 1 PM EST TUESDAY...

* WHAT...Northeast winds 20 to 30 kt with gusts up to 45 kt and 
  waves 10 to 15 feet expected.

* WHERE...Boston Harbor.

* WHEN...From 1 PM Monday to 1 PM EST Tuesday.

* IMPACTS...Strong winds will cause hazardous waves which could 
  capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should alter plans to avoid these hazardous conditions.
Remain in port, seek safe harbor, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ232>235-237-010845-
/O.UPG.KBOX.GL.A.0004.210201T1200Z-210202T2100Z/
/O.NEW.KBOX.SR.W.0001.210201T1700Z-210202T0800Z/
Nantucket Sound-Vineyard Sound-Buzzards Bay-Rhode Island Sound-
Block Island Sound-
339 PM EST Sun Jan 31 2021

...STORM WARNING IN EFFECT FROM NOON MONDAY TO 3 AM EST TUESDAY...

* WHAT...Northeast winds 25 to 35 kt with gusts up to 55 kt and 
  seas 7 to 12 feet expected.

* WHERE...In Massachusetts coastal waters, Nantucket Sound, 
  Vineyard Sound and Buzzards Bay. In Rhode Island coastal 
  waters, Rhode Island Sound and Block Island Sound.

* WHEN...From noon Monday to 3 AM EST Tuesday.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ231-010845-
/O.UPG.KBOX.GL.A.0004.210201T1200Z-210202T2100Z/
/O.NEW.KBOX.SR.W.0001.210201T2300Z-210202T0800Z/
Cape Cod Bay-
339 PM EST Sun Jan 31 2021

...STORM WARNING IN EFFECT FROM 6 PM MONDAY TO 3 AM EST TUESDAY...

* WHAT...Northeast winds 25 to 30 kt with gusts up to 50 kt and 
  seas 7 to 10 feet expected.

* WHERE...Cape Cod Bay.

* WHEN...From 6 PM Monday to 3 AM EST Tuesday.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ251-010845-
/O.UPG.KBOX.GL.A.0004.210201T1200Z-210202T2100Z/
/O.NEW.KBOX.SR.W.0001.210201T2300Z-210202T1200Z/
Massachusetts Bay and Ipswich Bay-
339 PM EST Sun Jan 31 2021

...STORM WARNING IN EFFECT FROM 6 PM MONDAY TO 7 AM EST TUESDAY...

* WHAT...Northeast winds 25 to 35 kt with gusts up to 55 kt and 
  seas 16 to 21 feet expected.

* WHERE...Massachusetts Bay and Ipswich Bay.

* WHEN...From 6 PM Monday to 7 AM EST Tuesday.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

ANZ255-256-010845-
/O.UPG.KBOX.SR.A.0001.210201T1200Z-210202T2100Z/
/O.NEW.KBOX.SR.W.0001.210201T1700Z-210202T0800Z/
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-
339 PM EST Sun Jan 31 2021

...STORM WARNING IN EFFECT FROM NOON MONDAY TO 3 AM EST TUESDAY...

* WHAT...Northeast winds 25 to 35 kt with gusts up to 55 kt and 
  seas 13 to 18 feet expected.

* 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...From noon Monday to 3 AM EST Tuesday.

* IMPACTS...Very strong winds will cause hazardous seas which 
  could capsize or damage vessels and reduce visibility.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Mariners should remain in port, alter course, and/or secure the
vessel for severe conditions.

&&

$$

The office that day

Everything else NWS Boston/Norton, MA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 31, 3:49 AM ESTHigh Wind WatchBOXBarnstable, Dukes, Nantucket12 hr
Jan 31, 3:37 PM ESTWinter Storm WarningBOXBristol, Essex, Franklin, Hampden, Hampshire, Middlesex and 4 more37 hr
Jan 31, 3:39 PM ESTGale WarningBOX51 hr
Jan 31, 3:39 PM ESTHigh Wind WarningBOXBarnstable, Dukes, Nantucket33 hr
Jan 31, 3:39 PM ESTStorm WarningBOX42 hr
Jan 31, 3:52 PM ESTCoastal Flood WatchBOXBarnstable, Dukes, Essex, Nantucket, Norfolk, Plymouth and 1 more12 hr
Jan 31, 4:53 PM ESTWinter Weather AdvisoryBOXBarnstable, Dukes23 hr

Nearby

Storm Watches in Massachusetts, 2021Every storm watch in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.