High Surf Advisory
NWS Boston/Norton MA ยท US
Details
High Surf Advisory In Effect From 5 AM Friday To 8 PM EDT Sunday... ...Coastal Flood Watch Remains In Effect From Friday Afternoon Through Saturday Afternoon
- 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 6 to 17 feet possible 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 (3.7 to 12.9 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 Saturday afternoon.
Impacts
Numerous roads may be closed. Low lying property including homes, businesses, and some critical infrastructure may be inundated. Some shoreline erosion may occur. Dangerous swimming and surfing conditions and localized beach erosion.
Additional details
The exact timing for an approaching coastal low pressure remains uncertain. That will become important for peak surge around the times of high tides. Multiple tide cycles will be impacted, which combined with strong onshore flow may result in tides not lowering as well. Beach erosion will also be a concern, mainly for east-facing beaches.
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
- ~41s
- CAP status
- Actual
- CAP message type
- Alert
- Lifecycle
- New
- Source
- NWWS-OI
- Feed
- NWWS
- Recovered
- No
CAP routing and identity
- ULID
- 01M390FJJSP5P7ED03NEJ5F317
- Identifier
- urn:oid:2.49.0.1.840.0.984eb22df268966f70859e671c6914f47a12ec7b.001.1
- 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.113
- WMO heading
- XOUS51
- WMO data type
- CAP alert message XML (XO)
- WMO geography
- United States (US)
- WMO bulletin number
- 51
Event codes
| Name | Value |
|---|---|
| SAME | NWS |
| NationalWeatherService | SUY |
Parameters
| Name | Value |
|---|---|
| AWIPSidentifier | CFWBOX |
| WMOidentifier | WHUS41 KBOX 240608 |
| NWSheadline | HIGH SURF ADVISORY IN EFFECT FROM 5 AM FRIDAY TO 8 PM EDT SUNDAY... ...COASTAL FLOOD WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH SATURDAY AFTERNOON |
| BLOCKCHANNEL | EAS |
| BLOCKCHANNEL | NWEM |
| VTEC | /O.NEW.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 |