{"url_path":"/weather/alerts/2.49.0.1.840.0.fca4f35db744eb7691ecf6345865d03a0b01d22a.001.2","section_key":"alert","section_title":"High Surf Advisory issued September 25 at 12:35PM EDT until September 27 at 8:00PM EDT by NWS Boston/Norton MA","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-09-25","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.fca4f35db744eb7691ecf6345865d03a0b01d22a.001.2","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Boston/Norton MA"},"word_count":274,"has_tables":false,"body_markdown":"# High Surf Advisory: High Surf Advisory issued September 25 at 12:35PM EDT until September 27 at 8:00PM EDT by NWS Boston/Norton MA\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Eastern Essex; Suffolk; Eastern Norfolk; Eastern Plymouth; Barnstable; Dukes; Nantucket\n**Issued by:** NWS Boston/Norton MA\n**Sent:** 2026-09-25T12:35:00-04:00\n**Effective:** 2026-09-25T12:35:00-04:00\n**Expires:** 2026-09-26T01:45:00-04:00\n\n## Description\n* WHAT...For the High Surf Advisory, large breaking waves of 6\nto 13 feet in the surf zone. For the Coastal Flood Warning, up\nto one foot of inundation above ground level expected in low-\nlying areas near shorelines and tidal waterways (4.0 to 12.6\nfeet Mean Lower Low Water).\n\n* WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA,\nEastern Plymouth MA, Barnstable MA, Dukes MA and Nantucket MA\nCounties.\n\n* WHEN...For the High Surf Advisory, until 8 PM EDT Sunday. For\nthe Coastal Flood Warning, from 5 PM this afternoon to 8 PM\nEDT Sunday.\n\n* IMPACTS...Strong northeast winds with large waves will result in\nminor coastal flooding with pockets of moderate coastal flooding\nover multiple high tide cycles from late today through the\nweekend. The water also may struggle to vacate the area after\nthe high tides given persistent strong northeast winds. The\ngreatest risk for coastal flooding appears to be setting up\nsouth of Boston and onto the Cape and Islands. In addition...the\nlong duration of northeast winds coupled with large waves over\nmultiple high tide cycles will result in areas of severe beach\nerosion for a prolonged period.\n\n## Instructions\nTake the necessary actions to protect flood-prone property. If\ntravel is required, do not drive around barricades or through\nwater of unknown depth.\n\nInexperienced swimmers should remain out of the water due to\ndangerous surf conditions."}