Massachusetts alerts

Suffolk County, Massachusetts weather alerts

3 National Weather Service alerts are in force for Suffolk County: a coastal flood warning, a high wind warning and a high surf advisory.

Checked Sat, Sep 26, 2026, 5:15 AM EDT. Times are Eastern Daylight Time.

Suffolk County forecastLive radar here

Warnings on the map

Every watch, warning and advisory the National Weather Service has in force over Suffolk County, Massachusetts. Open it for the live map, where it pans and zooms.

Every watch, warning and advisory the National Weather Service has in force over Suffolk County, Massachusetts Open the live map with warnings and watches

Map layer from NOAA National Weather Service. Boundaries from the Iowa Environmental Mesonet.

Alerts in force3

Every product in force for Suffolk County, worst first, with its full text.

Coastal Flood Warning

Severe

Coastal Flood Warning issued September 26 at 2:00AM EDT until September 27 at 8:00PM EDT by NWS Boston/Norton MA

Issued Until 38 hr 44 min left

Areas Eastern Essex, MA; Suffolk, MA; Eastern Norfolk, MA; Eastern Plymouth, MA; Barnstable, MA; Dukes, MA; Nantucket, MA

Full text

* WHAT...For the Coastal Flood Warning, up to one foot of inundation above ground level in low-lying areas near shorelines and tidal waterways (4.0 to 12.6 feet Mean Lower Low Water). For the High Surf Advisory, large breaking waves of 6 to 13 feet in the surf zone. * WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA, Eastern Plymouth MA, Barnstable MA, Dukes MA and Nantucket MA Counties. * WHEN...Until 8 PM EDT Sunday. * IMPACTS...Strong northeast winds with large waves will result in minor coastal flooding with pockets of moderate coastal flooding over multiple high tide cycles from late today through the weekend. The water also may struggle to vacate the area after the high tides given persistent strong northeast winds. The greatest risk for coastal flooding appears to be setting up south of Boston and onto the Cape and Islands. In addition...the long duration of northeast winds coupled with large waves over multiple high tide cycles will result in areas of severe beach erosion for a prolonged period.

What to do

Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. Inexperienced swimmers should remain out of the water due to dangerous surf conditions.

NWS Boston/Norton MAShare this alert

High Wind Warning

Severe

High Wind Warning issued September 26 at 2:03AM EDT until September 27 at 8:00AM EDT by NWS Boston/Norton MA

Issued Until 26 hr 44 min left

Areas Eastern Essex, MA; Suffolk, MA; Eastern Norfolk, MA; Eastern Plymouth, MA; Southern Bristol, MA; Southern Plymouth, MA; Barnstable, MA; Dukes, MA; Nantucket, MA; Bristol, RI; Washington, RI; Newport, RI; Block Island, RI

Full text

* WHAT...Northeast winds 20 to 30 mph with gusts up to 60 mph. * WHERE...Portions of eastern, northeastern, and southeastern Massachusetts and northern and southern Rhode Island. * WHEN...Until 8 AM EDT Sunday. * IMPACTS...Damaging winds will blow down trees and power lines. Power outages are expected. Travel will be difficult, especially for high profile vehicles.

What to do

People are urged to secure loose objects that could be blown around or damaged by the wind.

NWS Boston/Norton MAShare this alert

High Surf Advisory

Minor

High Surf Advisory issued September 26 at 2:00AM EDT until September 27 at 8:00PM EDT by NWS Boston/Norton MA

Issued Until 38 hr 44 min left

Areas Eastern Essex, MA; Suffolk, MA; Eastern Norfolk, MA; Eastern Plymouth, MA; Barnstable, MA; Dukes, MA; Nantucket, MA

Full text

* WHAT...For the Coastal Flood Warning, up to one foot of inundation above ground level in low-lying areas near shorelines and tidal waterways (4.0 to 12.6 feet Mean Lower Low Water). For the High Surf Advisory, large breaking waves of 6 to 13 feet in the surf zone. * WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA, Eastern Plymouth MA, Barnstable MA, Dukes MA and Nantucket MA Counties. * WHEN...Until 8 PM EDT Sunday. * IMPACTS...Strong northeast winds with large waves will result in minor coastal flooding with pockets of moderate coastal flooding over multiple high tide cycles from late today through the weekend. The water also may struggle to vacate the area after the high tides given persistent strong northeast winds. The greatest risk for coastal flooding appears to be setting up south of Boston and onto the Cape and Islands. In addition...the long duration of northeast winds coupled with large waves over multiple high tide cycles will result in areas of severe beach erosion for a prolonged period.

What to do

Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. Inexperienced swimmers should remain out of the water due to dangerous surf conditions.

NWS Boston/Norton MAShare this alert

The past year in Suffolk County

In the past year the National Weather Service issued 65 alerts for Suffolk County, including 3 high wind warnings, 3 snow squall warnings, 1 blizzard warning and 1 coastal flood warning.

ProductIssuedMost recent
High Wind Warning3Sep 25, 2026
Snow Squall Warning3Jan 1, 2026
Blizzard Warning1Feb 22, 2026
Coastal Flood Warning1Sep 25, 2026
Extreme Heat Warning1Jul 1, 2026
Severe Thunderstorm Warning1May 19, 2026
Winter Storm Warning1Jan 25, 2026
Coastal Flood Watch4Sep 25, 2026
High Wind Watch3Sep 25, 2026
Flood Watch2Sep 13, 2026
Winter Storm Watch2Feb 22, 2026
Extreme Heat Watch1Jul 1, 2026
Wind Advisory8May 30, 2026
Winter Weather Advisory7Mar 5, 2026
Coastal Flood Advisory5Feb 24, 2026
Cold Weather Advisory4Feb 7, 2026
Heat Advisory4Aug 6, 2026
High Surf Advisory2Sep 25, 2026
Frost Advisory1Oct 9, 2025
Rip Currents Statement6Sep 22, 2026
Coastal Flood Statement5Jun 13, 2026

Warnings issued

  1. Coastal Flood Warning
  2. High Wind Warning
  3. Extreme Heat Warning
  4. Severe Thunderstorm Warning
  5. High Wind Warning
  6. Blizzard Warning
  7. Winter Storm Warning
  8. Snow Squall Warning
  9. Snow Squall Warning
  10. Snow Squall Warning
  11. High Wind Warning
Every alert, most recent first
  1. Coastal Flood Warning
  2. Coastal Flood Watch
  3. High Wind Watch
  4. High Wind Warning
  5. High Surf Advisory
  6. Rip Currents Statement
  7. Rip Currents Statement
  8. Flood Watch
  9. Rip Currents Statement
  10. Rip Currents Statement
  11. Rip Currents Statement
  12. Heat Advisory
  13. Heat Advisory
  14. Rip Currents Statement
  15. Heat Advisory
  16. Extreme Heat Warning
  17. Extreme Heat Watch
  18. Coastal Flood Statement
  19. Wind Advisory
  20. Severe Thunderstorm Warning
  21. Heat Advisory
  22. Wind Advisory
  23. Coastal Flood Statement
  24. High Wind Watch
  25. High Wind Warning
  26. Flood Watch
  27. Winter Weather Advisory
  28. Coastal Flood Advisory
  29. Coastal Flood Advisory
  30. Coastal Flood Watch
  31. Blizzard Warning
  32. Winter Storm Watch
  33. Winter Weather Advisory
  34. Winter Weather Advisory
  35. Cold Weather Advisory
  36. Winter Weather Advisory
  37. Coastal Flood Watch
  38. Coastal Flood Advisory
  39. Cold Weather Advisory
  40. Cold Weather Advisory

The 40 most recent of 65.

From the Iowa Environmental Mesonet’s archive of NWS watches, warnings and advisories (VTEC), by the county’s own code and the forecast zones inside it. Each links to the alert's own page, with its text, map, radar and sounding.

Every alert in Suffolk County since 1986

Nearby

The counties around Suffolk County, with what is in force in each.

What this means

Warning
The hazard is happening or about to. Act now: a tornado warning means take shelter, a flash flood warning means move to higher ground.
Watch
Conditions favor the hazard. Nothing is happening yet; have a plan and be ready to act if a warning follows.
Advisory
A hazard that is less serious than a warning but can still cause trouble, such as dense fog, heat or light ice.
Statement
Information about weather that does not yet meet a warning: a strong storm, a hydrologic update, or a special weather statement.

Severity (extreme, severe, moderate, minor) is the rating the issuing office gives each product. More on the difference: tornado watch vs. tornado warning. Alerts come from the National Weather Service; follow its instructions and your local officials.

Follow these alerts

Alerts for Suffolk County in your reader or calendar.

The alerts on this page as a feed, updated every minute, for a feed reader or an app that reads Atom or RSS, and as a calendar where each alert runs from when it takes effect to when it ends. A feed or a calendar is not a warning siren: for warnings, keep a weather radio or your phone's emergency alerts on.

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Sources

Alerts from the National Weather Service's public feed, read afresh every minute, and matched to counties and zones by their UGC codes. Warnings from outside the United States come from each country's own meteorological service. Follow the issuing office's instructions and your local officials.