{"url_path":"/weather/alerts/2.49.0.1.840.0.5fc2c07df9f96bd93565647920d09b90f7ca1592.004.3","section_key":"alert","section_title":"Coastal Flood Warning issued September 25 at 4:44PM EDT until September 27 at 6:00PM EDT by NWS Upton NY","topic":"weather","document":{"doc_type":"alert","doc_date":"2026-09-25","source_url":"https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.5fc2c07df9f96bd93565647920d09b90f7ca1592.004.3","accession_number":null,"cik":null,"ticker":null,"issuer_name":null,"edgar_url":null,"primary_entity_key":null,"primary_entity_name":"NWS Upton NY"},"word_count":468,"has_tables":false,"body_markdown":"# Coastal Flood Warning: Coastal Flood Warning issued September 25 at 4:44PM EDT until September 27 at 6:00PM EDT by NWS Upton NY\n\n**Severity:** Severe\n**Certainty:** Likely\n**Urgency:** Expected\n**Areas:** Southeast Suffolk\n**Issued by:** NWS Upton NY\n**Sent:** 2026-09-25T16:44:00-04:00\n**Effective:** 2026-09-25T16:44:00-04:00\n**Expires:** 2026-09-26T18:15:00-04:00\n\n## Description\n* WHAT...For the High Surf Advisory, large breaking waves of 6 to\n10 feet in the surf zone. For the High Rip Current Risk,\ndangerous rip currents. For the Coastal Flood Warning, 1 1/2 to\n2 1/2 ft, locally 3 ft, of inundation above ground level\nexpected in vulnerable areas near the waterfront and shoreline. The\nhighest water levels are likely with the Saturday morning and\npossibly Sunday morning high tides.\n\n* WHERE...Southeast Suffolk County.\n\n* WHEN...For the High Surf Advisory, until 8 PM EDT Sunday. For\nthe High Rip Current Risk, through Sunday evening. For the\nCoastal Flood Warning, During the times of high tide until 6 PM\nEDT Sunday.\n\n* COASTAL FLOOD IMPACTS...Widespread moderate to locally major\nflooding of vulnerable areas near the waterfront and shoreline.\nThe threat for major flooding is mainly for the north shore of\nthe south fork and north shore of Fire Island due to additive\nwave action potentially exacerbating flooding. Expect 1 1/2 to 2\n1/2 ft, locally 3 feet of inundation above ground level in low\nlying, vulnerable areas. This will result in numerous road\nclosures and cause widespread flooding of low lying property\nincluding parking lots, parks, lawns and homes/businesses with\nbasements near the waterfront. Vehicles parked in vulnerable\nareas near the waterfront will likely become flooded. Flooding\nwill also extend inland from the waterfront along tidal rivers\nand bays.\n\n* SHOREFRONT/BEACH IMPACTS...Breaking waves of 6 to 10 ft along\nwith elevated water levels will result in widespread dune\nerosion and beach flooding. Localized overwashes are possible\nwhere dune structures are compromised, resulting in some\nflooding of roadways and vulnerable structures behind protective\ndunes. Dangerous swimming and surfing conditions and localized\nbeach erosion. Life-threatening rip currents are likely for all\npeople entering the surf zone. Anyone visiting the beaches\nshould stay out of the surf. Rip currents can sweep even the\nbest swimmers away from shore into deeper water.\n\n* ADDITIONAL DETAILS....Another round of moderate to locally\nmajor coastal flooding is possible for the Sunday morning high\ntide cycle.\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.\n\nIf you enter the surf zone, always have a flotation device with\nyou and swim near a lifeguard. If caught in a rip current, relax\nand float, and do not swim against the current. If able, swim in\na direction following the shoreline. If unable to escape, face\nthe shore and yell or wave for help."}