High Surf Advisory
NWS Boston/Norton MA ยท US
Details
High Surf Advisory Remains In Effect From 5 AM Friday To 8 PM EDT Sunday... ...Coastal Flood Watch Now In Effect From Friday Afternoon Through Sunday Evening
- Event
- High Surf Advisory
- Issued
- Onset
- Message expires
- Expected end
- Category
- Meteorological
- Urgency
- Expected
- Severity
- Minor
- Certainty
- Likely
- Response
- Avoid
Description
What
For the High Surf Advisory, large breaking waves of 7 to 13 feet expected in the surf zone. For the Coastal Flood Watch, up to one foot of inundation above ground level possible in low-lying areas near shorelines and tidal waterways (3.8 to 12.8 feet Mean Lower Low Water).
Where
Eastern Essex MA, Suffolk MA, Eastern Norfolk MA, Eastern Plymouth MA, Barnstable MA, Dukes MA and Nantucket MA Counties.
When
For the High Surf Advisory, from 5 AM Friday to 8 PM EDT Sunday. For the Coastal Flood Watch, from Friday afternoon through Sunday evening.
Impacts
Strong northeast winds with large waves will result in minor to perhaps pockets of moderate coastal flooding over multiple high tide cycles from late Friday through the weekend. 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 beach erosion.
Instructions
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Inexperienced swimmers should remain out of the water due to dangerous surf conditions.
Affected areas
- Eastern Essex
- Suffolk County, MA
- Eastern Norfolk
- Eastern Plymouth
- Barnstable County, MA
- Dukes County, MA
- Nantucket County, MA
Public contact
- Issuer
- NWS Boston/Norton MA
- Website
- http://www.weather.gov
Message record
- Received
- Issue to receipt
- ~19s
- CAP status
- Actual
- CAP message type
- Update
- Lifecycle
- Updated
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M3A6CWCJDHFKRDV15W1D5R68
- Identifier
- urn:oid:2.49.0.1.840.0.ae75a7e36559e6fc48a29b53fe3a41bcb73abe9b.001.2
- Sender
- w-nws.webmaster@noaa.gov
- Scope
- Public
- CAP source
- 211803 v2.3.0
- Handling codes
- IPAWSv1.0
- Issuing office
- NWS Boston/Norton MA
- AWIPS ID
- CAPBOX
- NWWS sequence
- nwws_processor.7293
- WMO heading
- XOUS51
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- United States (US)
- WMO bulletin number
- 51
References
- Sender
- w-nws.webmaster@noaa.gov
- Sent
Event codes
| Name | Value |
|---|---|
| SAME | NWS |
| NationalWeatherService | SUY |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | CFWBOX |
| WMOidentifier | WHUS41 KBOX 241711 |
| NWSheadline | HIGH SURF ADVISORY REMAINS IN EFFECT FROM 5 AM FRIDAY TO 8 PM EDT SUNDAY... ...COASTAL FLOOD WATCH NOW IN EFFECT FROM FRIDAY AFTERNOON THROUGH SUNDAY EVENING |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| VTEC | /O.CON.KBOX.SU.Y.0003.260925T0900Z-260928T0000Z/ |
| eventEndingTime | 2026-09-27T20:00:00-04:00 |
| BLOCKCHANNEL | CMAS |
Locations
Location data
- Eastern Essex
- Suffolk County, MA
- Eastern Norfolk
- Eastern Plymouth
- Barnstable County, MA
- Dukes County, MA
- Nantucket County, MA
| Name | Value |
|---|---|
| SAME | 025009 |
| SAME | 025021 |
| SAME | 025025 |
| SAME | 025023 |
| SAME | 025001 |
| SAME | 025007 |
| SAME | 025019 |
| UGC | MAZ007 |
| UGC | MAZ015 |
| UGC | MAZ016 |
| UGC | MAZ019 |
| UGC | MAZ022 |
| UGC | MAZ023 |
| UGC | MAZ024 |