{"url_path":"/weather/alerts/2.49.0.1.840.0.e000a1e49e1731791bd9717109e0d10c814dc1ac.001.1","section_key":"alert","section_title":"High Surf Advisory issued September 13 at 12:09PM AKDT until September 15 at 10:00PM AKDT by NWS Anchorage AK","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-09-13","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.e000a1e49e1731791bd9717109e0d10c814dc1ac.001.1","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Anchorage AK"},"word_count":340,"has_tables":false,"body_markdown":"# High Surf Advisory: High Surf Advisory issued September 13 at 12:09PM AKDT until September 15 at 10:00PM AKDT by NWS Anchorage AK\n\n**Severity:** Minor\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Kuskokwim Delta Coast and Nunivak Island\n**Issued by:** NWS Anchorage AK\n**Sent:** 2026-09-13T12:09:00-08:00\n**Effective:** 2026-09-13T12:09:00-08:00\n**Expires:** 2026-09-15T22:00:00-08:00\n\n## Description\n* WHAT...\nKwigillingok, Kongiganak, and Kipnuk: Water levels as\nhigh as 1.0 to 2.5 feet above the normal highest tide line.\nSouthwest winds 25 to 35 mph with gusts to 40 to 45 mph before\nwinds transition to west Tuesday morning, diminishing impacts.\n\nToksook Bay and Tununak: West winds 30 to 40 mph with gusts to\n45 to 50 mph beginning Tuesday morning. Water levels as high as\n0.5 to 1.5 feet above the normal highest tide line.\n\n* WHERE...Kuskokwim Delta Coast, including Kwigillingok,\nKongiganak, Kipnuk, Toksook Bay, and Tununak.\n\n* WHEN...From 1 PM Monday to 10 PM Tuesday.\n\n* IMPACTS...There is potential for coastal erosion due to high\nsurf. The coastal flood threat is low to medium for\nKwigillingok, Kongiganak, and Kipnuk (30 to 40 percent). The\ncoastal flood threat is low (10 to 20 percent) for Toksook Bay\nand Tununak.\n\n* ADDITIONAL DETAILS...A developing low pressure system will drive\na fetch of strong southwest winds towards the Kuskokwim Delta\nCoast early Monday afternoon, which will result in increased\nwave activity. Large breaking waves of 3 to 5 feet for the\nKuskokwim Delta coast will continue into Tuesday morning, which\nwill also coincide with high tide, enhancing coastal impacts.\nSouthwest winds shut off later Tuesday morning for the Kuskokwim\nDelta Coast and attention then shifts to Toksook Bay and Tununak\nas west winds take over and the low moves inland. Strong west\nwinds will bring in higher seas of 1 to 3 feet for Toksook Bay\nand Tununak. Conditions are on track to improve as the low moves\nfarther inland Tuesday night. Additionally, periods of moderate\nto heavy rainfall will precede the advisory duration.\n\n## Instructions\nA High Surf Advisory means that high surf will affect the\ncoastline in the advisory area, producing rip currents and\nlocalized erosion.\n\n\n-AM"}