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Coastal Flood Watch

Status

New Event Active alert

Start Time

Thu 08/21/2025 06:00 PM EDT

End Time

Fri 08/22/2025 12:00 AM EDT

Significance

Watch

Impacts

Moderate impact

Locations Affected

Hempstead, NY ∙ Islandia, NY ∙ Speonk, NY ∙ Montauk, NY ∙ Lawrence, NY ∙ Captree State Park, NY ∙ Garden City Park, NY ∙ North Massapequa, NY ∙ Lynbrook, NY ∙ South Ozone Park, NY

Full Alert Message

URGENT - IMMEDIATE BROADCAST REQUESTED Coastal Hazard Message National Weather Service New York NY 305 AM EDT Wed Aug 20 2025 ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH FRIDAY EVENING... ...HIGH SURF ADVISORY REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 8 PM EDT FRIDAY... ...COASTAL FLOOD WATCH IN EFFECT THURSDAY EVENING... * WHAT...For the High Rip Current Risk, life-threatening rip currents. For the High Surf Advisory, large breaking waves of 7 to 11 feet expected in the surf zone today, 12 to 16 feet on Thursday and 8 to 12 feet on Friday. For the Coastal Flood Watch, one to two feet of inundation above ground level possible in vulnerable areas near the waterfront and shoreline. * WHERE...Southwest Suffolk, Southeast Suffolk and Southern Nassau Counties. * WHEN...For the High Rip Current Risk, through Friday evening. For the High Surf Advisory, from 6 AM this morning to 8 PM EDT Friday. For the Coastal Flood Watch, Thursday evening. * COASTAL FLOOD IMPACTS...Widespread moderate flooding in the more vulnerable locations near the waterfront and shoreline. Some roads and low lying properties including parking lots, parks, lawns, and homes and businesses with basements near the waterfront will experience minor flooding. * SWIMMING IMPACTS...Life-threatening swimming and surfing conditions and localized beach erosion. Life-threatening rip currents are likely for all people entering the surf zone. Anyone visiting the beaches should stay out of the surf. Rip currents can sweep even the best swimmers away from shore into deeper water. * SHORELINE IMPACTS...The threat for beach flooding, beach erosion and escarpment and areas of dune erosion will increase with successive high tides Tue eve thru Fri morning. Widespread areas of dune erosion with localized overwashes are expected during the Thu evening and Fri morning high tides. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. If you enter the surf zone, always have a flotation device with you and swim near a lifeguard. If caught in a rip current, relax and float, and do not swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and yell or wave for help.

Technical Header

NYZ080-081-179-202300- /O.NEW.KOKX.CF.A.0001.250821T2200Z-250822T0400Z/ /O.CON.KOKX.SU.Y.0001.250820T1000Z-250823T0000Z/ /O.CON.KOKX.RP.S.0012.000000T0000Z-250823T0000Z/ Southwest Suffolk-Southeast Suffolk-Southern Nassau- 305 AM EDT Wed Aug 20 2025