Alert archive / Massachusetts / Gale Warnings in 2025
Gale Warning 20, NWS Boston/Norton, MA
NWS Boston/Norton, MA issued this gale warning at Apr 11, 2025, 2:57 AM EDT. It took effect at Apr 11, 2025, 6:00 PM EDT. It was in force for 20 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 11, 2025, 2:57 AM EDT (06:57 UTC)
- In effect from
- Apr 11, 2025, 6:00 PM EDT
- Expired
- Apr 12, 2025, 2:10 PM EDT
- In force
- 20 hr
- Issued by
- NWS Boston/Norton, MA
The text
As transmitted.
165 WHUS71 KBOX 110657 MWWBOX URGENT - MARINE WEATHER MESSAGE National Weather Service Boston/Norton MA 257 AM EDT Fri Apr 11 2025 ANZ255-256-112200- /O.UPG.KBOX.GL.A.0011.250412T0300Z-250412T1600Z/ /O.NEW.KBOX.GL.W.0020.250411T2200Z-250412T2000Z/ 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- 257 AM EDT Fri Apr 11 2025 ...GALE WARNING IN EFFECT FROM 6 PM THIS EVENING TO 4 PM EDT SATURDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 35 kt and seas 6 to 9 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 6 PM this evening to 4 PM EDT Saturday. * IMPACTS...Strong winds will cause hazardous seas 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 hazardous conditions. && $$ ANZ254-112200- /O.NEW.KBOX.GL.W.0020.250411T2200Z-250412T2000Z/ Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm- 257 AM EDT Fri Apr 11 2025 ...GALE WARNING IN EFFECT FROM 6 PM THIS EVENING TO 4 PM EDT SATURDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 35 kt and seas 5 to 8 feet expected. * WHERE...Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm. * WHEN...From 6 PM this evening to 4 PM EDT Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ ANZ232>235-237-112200- /O.NEW.KBOX.GL.W.0020.250412T0000Z-250412T2000Z/ Nantucket Sound-Vineyard Sound-Buzzards Bay-Rhode Island Sound- Block Island Sound- 257 AM EDT Fri Apr 11 2025 ...GALE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 4 PM EDT SATURDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 35 kt and seas 4 to 6 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 8 PM this evening to 4 PM EDT Saturday. * IMPACTS...Strong winds will cause hazardous seas 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 hazardous conditions. && $$ ANZ236-112200- /O.NEW.KBOX.SC.Y.0050.250412T0100Z-250412T2000Z/ Narragansett Bay- 257 AM EDT Fri Apr 11 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO 4 PM EDT SATURDAY... * WHAT...Northeast winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 feet expected. * WHERE...Narragansett Bay. * WHEN...From 9 PM this evening to 4 PM EDT Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ230-112200- /O.NEW.KBOX.SC.Y.0050.250412T0900Z-250413T0600Z/ Boston Harbor- 257 AM EDT Fri Apr 11 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM SATURDAY TO 2 AM EDT SUNDAY... * WHAT...Northeast winds 15 to 20 kt with gusts up to 30 kt and waves around 2 feet expected. * WHERE...Boston Harbor. * WHEN...From 5 AM Saturday to 2 AM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ231-251-112200- /O.NEW.KBOX.SC.Y.0050.250412T0900Z-250414T0600Z/ Cape Cod Bay-Massachusetts Bay and Ipswich Bay- 257 AM EDT Fri Apr 11 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM SATURDAY TO 2 AM EDT MONDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and seas 4 to 7 feet expected. * WHERE...Cape Cod Bay and Massachusetts Bay and Ipswich Bay. * WHEN...From 5 AM Saturday to 2 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ250-112200- /O.NEW.KBOX.SC.Y.0050.250412T0900Z-250414T1200Z/ Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 257 AM EDT Fri Apr 11 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 5 AM SATURDAY TO 8 AM EDT MONDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and seas 5 to 8 feet expected. * WHERE...Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary. * WHEN...From 5 AM Saturday to 8 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$
3 follow-up statements
548 WHUS71 KBOX 111920 MWWBOX URGENT - MARINE WEATHER MESSAGE National Weather Service Boston/Norton MA 320 PM EDT Fri Apr 11 2025 ANZ231-120830- /O.EXA.KBOX.GL.W.0020.250412T0000Z-250412T2000Z/ /O.UPG.KBOX.SC.Y.0050.250412T0900Z-250414T0600Z/ Cape Cod Bay- 320 PM EDT Fri Apr 11 2025 ...GALE WARNING IN EFFECT FROM 8 PM THIS EVENING TO 4 PM EDT SATURDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 35 kt and seas 3 to 5 feet expected. * WHERE...Cape Cod Bay. * WHEN...From 8 PM this evening to 4 PM EDT Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ ANZ254>256-120830- /O.CON.KBOX.GL.W.0020.250411T2200Z-250412T2000Z/ 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- 320 PM EDT Fri Apr 11 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EDT SATURDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 40 kt and seas 5 to 8 feet expected. * WHERE...In Massachusetts coastal waters, Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm and 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 4 PM EDT Saturday. * IMPACTS...Strong winds will cause hazardous seas 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 hazardous conditions. && $$ ANZ232>235-237-120830- /O.CON.KBOX.GL.W.0020.250412T0000Z-250412T2000Z/ Nantucket Sound-Vineyard Sound-Buzzards Bay-Rhode Island Sound- Block Island Sound- 320 PM EDT Fri Apr 11 2025 ...GALE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 4 PM EDT SATURDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 40 kt and seas 3 to 5 feet expected. * WHERE...In Massachusetts coastal waters, Nantucket Sound, Vineyard Sound and Buzzards Bay. In Rhode Island coastal waters, Rhode Island Sound and Block Island Sound. * WHEN...From 8 PM this evening to 4 PM EDT Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ ANZ230-120830- /O.EXT.KBOX.SC.Y.0050.250412T0600Z-250413T0600Z/ Boston Harbor- 320 PM EDT Fri Apr 11 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 2 AM SATURDAY TO 2 AM EDT SUNDAY... * WHAT...Northeast winds 10 to 20 kt with gusts up to 30 kt and waves around 2 feet expected. * WHERE...Boston Harbor. * WHEN...From 2 AM Saturday to 2 AM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ251-120830- /O.EXT.KBOX.SC.Y.0050.250412T0600Z-250414T0600Z/ Massachusetts Bay and Ipswich Bay- 320 PM EDT Fri Apr 11 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 2 AM SATURDAY TO 2 AM EDT MONDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and seas 5 to 8 feet expected. * WHERE...Massachusetts Bay and Ipswich Bay. * WHEN...From 2 AM Saturday to 2 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ250-120830- /O.EXT.KBOX.SC.Y.0050.250412T0600Z-250414T1200Z/ Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 320 PM EDT Fri Apr 11 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 2 AM SATURDAY TO 8 AM EDT MONDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and seas 6 to 9 feet expected. * WHERE...Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary. * WHEN...From 2 AM Saturday to 8 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ236-120830- /O.CON.KBOX.SC.Y.0050.250412T0100Z-250412T2000Z/ Narragansett Bay- 320 PM EDT Fri Apr 11 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 9 PM THIS EVENING TO 4 PM EDT SATURDAY... * WHAT...Northeast winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 feet expected. * WHERE...Narragansett Bay. * WHEN...From 9 PM this evening to 4 PM EDT Saturday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ Frank
419 WHUS71 KBOX 120724 MWWBOX URGENT - MARINE WEATHER MESSAGE National Weather Service Boston/Norton MA 324 AM EDT Sat Apr 12 2025 ANZ254>256-122000- /O.CON.KBOX.GL.W.0020.000000T0000Z-250412T2000Z/ 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- 324 AM EDT Sat Apr 12 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... * WHAT...Northeast winds 20 to 25 kt with gusts up to 40 kt and seas 5 to 8 feet. * WHERE...In Massachusetts coastal waters, Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm and 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 4 PM EDT this afternoon. * IMPACTS...Strong winds will cause hazardous seas 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 hazardous conditions. && $$ ANZ231>235-237-122000- /O.CON.KBOX.GL.W.0020.000000T0000Z-250412T2000Z/ Cape Cod Bay-Nantucket Sound-Vineyard Sound-Buzzards Bay- Rhode Island Sound-Block Island Sound- 324 AM EDT Sat Apr 12 2025 ...GALE WARNING REMAINS IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... * WHAT...Northeast winds 15 to 25 kt with gusts up to 40 kt and seas 3 to 5 feet. * WHERE...Portions of Massachusetts coastal waters and Rhode Island coastal waters. * WHEN...Until 4 PM EDT this afternoon. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. && $$ ANZ236-122000- /O.CON.KBOX.SC.Y.0050.000000T0000Z-250412T2000Z/ Narragansett Bay- 324 AM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT THIS AFTERNOON... * WHAT...Northeast winds 15 to 20 kt with gusts up to 30 kt and waves around 3 feet. * WHERE...Narragansett Bay. * WHEN...Until 4 PM EDT this afternoon. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ230-122100- /O.CON.KBOX.SC.Y.0050.000000T0000Z-250413T0600Z/ Boston Harbor- 324 AM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT SUNDAY... * WHAT...Northeast winds 10 to 20 kt with gusts up to 30 kt and waves around 2 feet. * WHERE...Boston Harbor. * WHEN...Until 2 AM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ251-122100- /O.CON.KBOX.SC.Y.0050.000000T0000Z-250414T0600Z/ Massachusetts Bay and Ipswich Bay- 324 AM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT MONDAY... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 5 to 8 feet. * WHERE...Massachusetts Bay and Ipswich Bay. * WHEN...Until 2 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ250-122100- /O.CON.KBOX.SC.Y.0050.000000T0000Z-250414T1200Z/ Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 324 AM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT MONDAY... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 6 to 9 feet. * WHERE...Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary. * WHEN...Until 8 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$
351 WHUS71 KBOX 121810 MWWBOX URGENT - MARINE WEATHER MESSAGE National Weather Service Boston/Norton MA 210 PM EDT Sat Apr 12 2025 ANZ256-130800- /O.CAN.KBOX.GL.W.0020.000000T0000Z-250412T2000Z/ /O.EXB.KBOX.SC.Y.0050.000000T0000Z-250414T0200Z/ Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island- 210 PM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM EDT SUNDAY... ...GALE WARNING IS CANCELLED... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 6 to 9 feet. * WHERE...Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island. * WHEN...Until 10 PM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ231-130800- /O.CAN.KBOX.GL.W.0020.000000T0000Z-250412T2000Z/ /O.EXA.KBOX.SC.Y.0050.000000T0000Z-250414T0600Z/ Cape Cod Bay- 210 PM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 AM EDT MONDAY... ...GALE WARNING IS CANCELLED... * WHAT...North winds 10 to 20 kt with gusts up to 30 kt and seas 4 to 7 feet. * WHERE...Cape Cod Bay. * WHEN...Until 2 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ254-255-130800- /O.CAN.KBOX.GL.W.0020.000000T0000Z-250412T2000Z/ /O.EXA.KBOX.SC.Y.0050.000000T0000Z-250414T1200Z/ 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- 210 PM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT MONDAY... ...GALE WARNING IS CANCELLED... * WHAT...North winds 10 to 20 kt with gusts up to 30 kt and seas 5 to 8 feet. * WHERE...Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 nm and Coastal Waters extending out to 25 nm South of Marthas Vineyard and Nantucket. * WHEN...Until 8 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ232-130800- /O.CAN.KBOX.GL.W.0020.000000T0000Z-250412T2000Z/ /O.EXB.KBOX.SC.Y.0050.000000T0000Z-250414T0000Z/ Nantucket Sound- 210 PM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT SUNDAY... ...GALE WARNING IS CANCELLED... * WHAT...North winds 15 to 20 kt with gusts up to 30 kt and seas 4 to 6 feet. * WHERE...Nantucket Sound. * WHEN...Until 8 PM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ233>235-237-130800- /O.CAN.KBOX.GL.W.0020.000000T0000Z-250412T2000Z/ /O.EXB.KBOX.SC.Y.0050.000000T0000Z-250413T1800Z/ Vineyard Sound-Buzzards Bay-Rhode Island Sound-Block Island Sound- 210 PM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT SUNDAY... ...GALE WARNING IS CANCELLED... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 4 to 7 feet. * WHERE...In Massachusetts coastal waters, Vineyard Sound and Buzzards Bay. In Rhode Island coastal waters, Rhode Island Sound and Block Island Sound. * WHEN...Until 2 PM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ230-130800- /O.EXT.KBOX.SC.Y.0050.000000T0000Z-250413T1800Z/ Boston Harbor- 210 PM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 PM EDT SUNDAY... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and waves around 2 feet. * WHERE...Boston Harbor. * WHEN...Until 2 PM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ236-130800- /O.EXT.KBOX.SC.Y.0050.000000T0000Z-250413T1800Z/ Narragansett Bay- 210 PM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 2 PM EDT SUNDAY... * WHAT...North winds 10 to 20 kt with gusts up to 30 kt and waves around 3 feet. * WHERE...Narragansett Bay. * WHEN...Until 2 PM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ251-130800- /O.CON.KBOX.SC.Y.0050.000000T0000Z-250414T0600Z/ Massachusetts Bay and Ipswich Bay- 210 PM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT MONDAY... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 6 to 9 feet. * WHERE...Massachusetts Bay and Ipswich Bay. * WHEN...Until 2 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$ ANZ250-130800- /O.CON.KBOX.SC.Y.0050.000000T0000Z-250414T1200Z/ Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary- 210 PM EDT Sat Apr 12 2025 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT MONDAY... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 6 to 9 feet. * WHERE...Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary. * WHEN...Until 8 AM EDT Monday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. && $$
What forecasters said that day
The local office's own words before this gale warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Boston/Norton, MA wrote its last area forecast discussion before this gale warning went out at Apr 11, 2:42 AM EDT, 15 minutes earlier.
Area forecast discussion, Apr 11, 2:42 AM EDT, 15 minutes before
Area Forecast Discussion
National Weather Service Boston/Norton MA
242 AM EDT Fri Apr 11 2025
.SYNOPSIS...
A fast moving disturbance will bring rain and wet snow to the region
later tonight...but not expecting an impact to travel. Cloudy but
generally dry for Friday, but we expect another soaking, windswept
rain event for late Friday night into Saturday with some wet
snow/ice possible at the onset across the interior high terrain.
Additional rain possible in eastern New England on Sunday. Milder
temperatures are on top for the first half of next week.
&&
.NEAR TERM /UNTIL 6 AM THIS MORNING/...
Key Messages...
* Rain & Wet Snow arrives from west to east between 8 pm & 2 am with
Ptype trending to mainly wet snow away from south coast
* 1-2" of wet snow accumulation possible mainly across the interior
high terrain overnight but with roadways remaining generally wet
Shortwave trough will lift across the eastern Great Lakes tonight.
This will induce a modest southerly LLJ and with ample moisture
precipitation will overspread the region from west to east between 8
pm and 2 am. Ptype might be rain at the onset in the lower
elevations...but given the thermal profiles we should see
dynamic/adiabatic cooling processes flip most locations over to wet
snow at least away from the south coast later this evening into the
overnight hours. Not expecting much of an impact given temps mainly
above freezing and the time of year. However...we may see 1-2" of
wet snow on grassy surfaces mainly across the interior high terrain.
Some very minor accumulations are possible on grassy surfaces in the
lower elevations if there is enough intensity...but not an impact to
travel. Overnight low temps will mainly be in the lower-middle 30s.
&&
.SHORT TERM /6 AM THIS MORNING THROUGH 6 PM SATURDAY/...
Key Messages...
* Rain and wet snow departs Fri morning with mainly dry but
cloudy weather the rest of the day and highs in the 40s to near 50
* Rain overspreads the region late Friday night from south to north
with some wet snow/ice possible across the interior high terrain
Details...
Friday...
The shortwave and deeper moisture will be lifting to the
north...bringing an end to any remaining rain or wet snow Fri
morning. Otherwise...high pressure across eastern Canada will result
in ENE low level flow and skies remaining rather cloudy. High temps
will mainly be in the 40s to near 50 with the coolest temps along
the coast.
Friday night...
Low pressure emerges off the mid Atlantic coast and slowly lifts
northeast Fri night. While much of Fri evening will be
dry...precipitation will begin to overspread much of the region from
south to north after midnight. Ptype will mainly be rain in the
lower elevations, but high pressure over Quebec will result in
marginally cold enough air for a bit of wet snow/ice across parts of
the interior high terrain. It is possible that some locations across
the high terrain see minor snow accumulations along with a bit of
ice. Later shifts may have to consider a Winter Weather Advisory
depending on model trends. Low temperatures will mainly be in the
30s. It will also becoming a bit breezy along the coast especially
after midnight.
&&
.LONG TERM /SATURDAY NIGHT THROUGH THURSDAY/...
Key Messages:
* Dreary and unsettled through Sunday
* Steady rain lingers over the Cape and Islands Sunday, showers
elsewhere.
* Warmer to start the week before the chance for more rain returns
with another frontal system midweek.
Details...
Brief break in rainfall Saturday night as low pressure becomes
vertically stacked under the cutoff low. The second in a series of
low pressure systems passes close to but south of southern New
England, leading to the return of rain chances across the eastern MA
coast Sunday. Totals for this event will likely be a bit lower, as
the rain associated with this should be lighter. Forecast soundings
indicate some drier air aloft while PWATs are still in the 0.7-0.75"
range along the eastern coast. These will likely fall as the day
progresses and dry air moves into the region. Still a bit of wiggle
room with the exact track of this secondary area of low pressure
which could impact eventual rainfall totals.
The trough associated with the weekend's unsettled weather is
expected to move offshore by the start of next week. Ridging and
surface high pressure builds in a bit Monday ahead of yet another
trough across the Great Lakes. N/NW winds shift south Monday
night/Tuesday morning with the arrival of a warm front, and low rain
chances make a return going into Tuesday. A deepening area of low
pressure near the southern Hudson Bay may push a strong cold front
through the region later Tuesday. Ensembles show 850 mb temps
plunging to between -5 and -10C behind this feature. 850 mb
temps of this magnitude would likely result in below-average
temps across the eastern CONUS. Temperatures to start the week
will likely be warmer, with highs on Monday and Tuesday reaching
the 60s. Cooler and possibly unsettled weather may make its
return by midweek with this frontal system.
&&
.AVIATION /06Z FRIDAY THROUGH TUESDAY/...
Low - less than 30 percent.
Moderate - 30 to 60 percent.
High - greater than 60 percent.
06z TAF Update:
Through 12z Friday: Moderate confidence.
IFR/MVFR for the interior MA/CT airports in -RASN and stratus,
with more of a MVFR/VFR borderline condition for eastern and
southern airports (BOS, BDL, PVD, Cape terminals). Pavement
temps too warm to support any accum on runways in the interior.
Precip to gradually shifts toward the northeast 09-12z, leading
to precip tapering off except for the northern airports.
MVFR/IFR cigs likely to linger after precip exits. Winds light
S (more calm/variable in interior), but will be backing some to
a SE/ESE around 4-7 kt into the pre-dawn/Fri AM push.
Today: Moderate confidence.
Widespread MVFR bases (perhaps lingering IFR for BAF/BDL/ORH
early) should continue into the morning. It looks ceilings may
improve to VFR/MVFR borderline for eastern airports around
15-17z, with better chance at MVFR ceilings lingering most of
the day west of ORH. SE/E winds 4-8 kt continue to back to NE by
late-AM/noontime, while increasing in speed to around 10 kt.
Stronger aftn NElys for the Cape and Islands, around 10-15 kt
gusts 20-25 kt.
Tonight through Saturday: Moderate confidence.
Through about 04z Sat, VFR for most, with VFR/borderline MVFR
ceilings for the interior. Conditions to deteriorate from south
to north after 04z-08z Sat, with categories going down to
widespread MVFR- IFR levels as steady precipitation moves
northward from the mid- Atlc/southern waters. There is high
confidence in sub-VFR conditions once precip begins, but
greater uncertainty in precip types. Potential for a wintry mix
of wet snow/rain mixed at times with sleet for airports north
and west of Interstate 95. Wintry p-types could linger well
into Sat with terrain airports having best chance at minor
slushy accums but runways probably should be wet. Stronger
confidence that BOS, PVD and Cape airports stay as a plain,
wind- driven rain at onset and continue into Sat.
NE winds continue to increase to around 10-15 kt tonight into
Sat, with gusts 20-24 kt for most, though around 30 kt for the
Cape and Islands.
KBOS TAF...Moderate confidence. Brief VFR deteriorates to MVFR
bases in light rain 07-12z Fri with winds shifting to SE/E.
Rain ends around 12z-13z with slow rise in bases to BKN VFR
levels around noontime (TEMPO 16-18z for residual MVFR cigs) as
winds become NE 4-8 kt. Should be VFR by Fri aftn but NE winds
increase to around 10-13 kt.
KBDL TAF...Moderate confidence. IFR in -SNRA thru around 09z Fri,
then precip should begin to taper off to the northeast. IFR
ceilings to trend to MVFR. Improvement to BKN VFR ceilings
possible but not as likely as further east. Light winds to trend
NE this morning, increasing in speed to around 5-10 kt this
aftn.
Outlook /Saturday Night through Tuesday/...
Saturday Night through Sunday: MVFR/IFR conditions possible.
Breezy. Chance SHRA.
Sunday Night: Mainly VFR, with local MVFR possible. Breezy.
Slight chance SHRA.
Monday: VFR.
Monday Night: Mainly VFR, with local MVFR possible. Chance
SHRA.
Tuesday: Mainly VFR, with local MVFR possible. Breezy. Chance
SHRA.
&&
.MARINE...
Forecaster Confidence Levels:
Low - less than 30 percent.
Medium - 30 to 60 percent.
High - greater than 60 percent.
Tonight through Friday night...High Confidence.
A weak pressure gradient will keep winds/seas below small craft
advisory thresholds tonight into Fri. However...high pressure over
Quebec coupled with approaching low pressure from the southwest will
result in increasing NE wind gusts of 25 to 35 knots late Fri and
especially Fri night. The strongest of the winds will be across the
southern outer-waters where we have hoisted a Gale Watch. We will
certainly need small craft advisories across the rest of the waters.
Outlook /Saturday Night through Tuesday/...
Saturday: Moderate risk for Small Craft Advisory winds with
gusts up to 30 kt. Rough seas up to 9 ft. Rain.
Saturday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Rough seas up to 8 ft. Rain showers likely.
Sunday: Moderate risk for Small Craft Advisory winds with gusts
up to 25 kt. Rough seas up to 9 ft. Rain showers likely.
Sunday Night: Low risk for Small Craft Advisory winds with
gusts up to 25 kt. Areas of rough seas. Chance of rain showers.
Monday: Winds less than 25 kt. Local rough seas.
Monday Night: Winds less than 25 kt. Areas of seas approaching
5 ft. Slight chance of rain showers.
Tuesday: Winds less than 25 kt. Areas of seas approaching 5 ft.
Chance of rain showers.
&&
.BOX WATCHES/WARNINGS/ADVISORIES...
CT...None.
MA...None.
RI...None.
MARINE...Gale Watch from this evening through Saturday morning for
ANZ255-256.
&&
SYNOPSIS...Frank/FT
NEAR TERM...Frank
SHORT TERM...Frank
LONG TERM...FT
AVIATION...Loconto/Hrencecin
MARINE...Loconto/HrencecinThe office that day
Everything else NWS Boston/Norton, MA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 11, 2:57 AM EDT | Small Craft Advisory | BOX | 3 days | |
| Apr 11, 2:03 PM EDT | Winter Weather Advisory | BOX | Franklin, Hampden, Hampshire, Middlesex, Worcester | 20 hr |
Nearby
Gale Warnings in Massachusetts, 2025Every gale warning in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.