4 National Weather Service alerts are in force for Barnstable County: a coastal flood warning, a high wind warning, a flood watch and a high surf advisory.
Checked Sat, Sep 26, 2026, 10:11 PM EDT. Times are Eastern Daylight Time.
Every watch, warning and advisory the National Weather Service has in force over Barnstable County, Massachusetts. Open it for the live map, where it pans and zooms.
Map layer from NOAA National Weather Service. Boundaries from the Iowa Environmental Mesonet.
Alerts in force4
Every product in force for Barnstable County, worst first, with its full text.
Coastal Flood Warning
Severe
Coastal Flood Warning issued September 26 at 2:08PM EDT until September 27 at 8:00PM EDT by NWS Boston/Norton MA
Issued Until 21 hr 48 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 (3.9 to 12.6 feet Mean Lower
Low Water). For the High Surf Advisory, large breaking waves
of 6 to 15 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.
* WHAT...Northeast winds 20 to 30 mph with gusts of 45 to 60 mph.
* WHERE...The eastern Massachusetts coast as well as the south coasts
of both Rhode Island and Massachusetts. This includes Cape Cod and
the Islands.
* 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.
* ADDITIONAL DETAILS...The long duration of the winds coupled with
heavy rain and fully leafed trees may exacerbate the risk for tree
damage and power outages.
What to do
People are urged to secure loose objects that could be blown around
or damaged by the wind.
Flood Watch issued September 26 at 12:18PM EDT until September 29 at 2:00AM EDT by NWS Boston/Norton MA
Issued Until 2 days left
Areas Northern Worcester, MA; Central Middlesex County, MA; Western Essex, MA; Eastern Essex, MA; Southern Worcester, MA; Western Norfolk, MA; Southeast Middlesex, MA; Suffolk, MA; Eastern Norfolk, MA; Northern Bristol, MA; Western Plymouth, MA; Eastern Plymouth, MA; Southern Bristol, MA; Southern Plymouth, MA; Barnstable, MA; Dukes, MA; Nantucket, MA; Northwest Middlesex County, MA; Northwest Providence, RI; Southeast Providence, RI; Western Kent, RI; Eastern Kent, RI; Bristol, RI; Washington, RI; Newport, RI; Block Island, RI
Full text
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...Central and eastern Massachusetts as well as all of Rhode
Island.
* WHEN...Through late Monday night.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks.
* ADDITIONAL DETAILS...
- Periods of rain will continue across the region right through
Monday. Storm total rainfall amount of 2-4" are expected, but
localized 5-7" amounts are possible. If these higher amounts are
realized...the potential for both urban and small river/stream
flooding would increase. This is particularly true if these
localized higher amounts occur over a vulnerable urban center.
- http://www.weather.gov/safety/flood
What to do
You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.
High Surf Advisory issued September 26 at 2:08PM EDT until September 27 at 8:00PM EDT by NWS Boston/Norton MA
Issued Until 21 hr 48 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 (3.9 to 12.6 feet Mean Lower
Low Water). For the High Surf Advisory, large breaking waves
of 6 to 15 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.
In the past year the National Weather Service issued 77 alerts for Barnstable County, including 5 high wind warnings, 2 coastal flood warnings, 2 severe thunderstorm warnings and 1 blizzard warning.
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.
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 Barnstable 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.
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.
