Coastal Flood Watch

Full Alert Message

URGENT - IMMEDIATE BROADCAST REQUESTED Coastal Hazard Message National Weather Service New York NY 427 PM EST Fri Feb 20 2026 ...COASTAL FLOOD WATCH IN EFFECT FROM SUNDAY EVENING THROUGH LATE SUNDAY NIGHT... * WHAT...1 1/2 to 2 1/2 ft, locally 3 ft, of inundation above ground level possible in vulnerable areas near the waterfront and shoreline. * WHERE...Southwest Suffolk and Southern Nassau Counties. * WHEN...From Sunday evening through late Sunday night. * COASTAL FLOOD IMPACTS...Widespread moderate flooding of vulnerable areas near the waterfront and shoreline possible. Expect 1 1/2 to 2 1/2 ft, locally 3 ft of inundation above ground level possible in low lying, vulnerable areas. This would result in numerous road closures and cause widespread flooding of low lying property including parking lots, parks, lawns and homes/businesses with basements near the waterfront. Vehicles parked in vulnerable areas near the waterfront will likely become flooded. Flooding will also extend inland from the waterfront along tidal rivers and bays. Ice cover in the bays and harbors could exacerbate flooding and cause damage to northeast to east facing shoreline structures. * SHORELINE IMPACTS...Breaking surf of 4 to 8 ft along the ocean front will cause widespread beach flooding and erosion during the time of high tide. Areas of dune erosion are likely, with localized washovers possible where dunes are compromised. * ADDITIONAL DETAILS...This water level forecast will be highly dependent on timing of windshift from east northeast to north gales with respect to the time of high tide, and will be refined over the next 24 hours. Ice cover in the bays and harbors could exacerbate flooding and cause damage to northeast to east facing shoreline structures. 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. && Time of high total tides are approximate to the nearest hour. GREAT SOUTH BAY AT LINDENHURST NY MLLW CATEGORIES - MINOR 3.1 FT, MODERATE 3.6 FT, MAJOR 4.1 FT MHHW CATEGORIES - MINOR 1.5 FT, MODERATE 2.0 FT, MAJOR 2.5 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 20/11 PM 2.6/ 3.1 1.0/ 1.5 1.4/ 1.9 1 NONE 21/12 PM 1.9/ 2.3 0.2/ 0.8 0.8/ 1.3 1 NONE 22/01 AM 2.3/ 2.8 0.8/ 1.3 1.1/ 1.6 0 NONE 22/01 PM 2.6/ 3.1 1.0/ 1.5 1.5/ 2.0 2 NONE 23/02 AM 3.7/ 4.2 2.2/ 2.7 2.5/ 3.0 2 MODERATE 23/01 PM 3.7/ 4.2 2.0/ 2.5 2.8/ 3.3 2 MODERATE GREAT SOUTH BAY AT WEST SAYVILLE NY MLLW CATEGORIES - MINOR 3.1 FT, MODERATE 3.6 FT, MAJOR 4.1 FT MHHW CATEGORIES - MINOR 1.7 FT, MODERATE 2.2 FT, MAJOR 2.7 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 21/12 AM 1.9/ 2.3 0.5/ 1.0 0.8/ 1.3 0 NONE 21/12 PM 1.4/ 1.9 0.0/ 0.5 0.4/ 0.9 0 NONE 22/02 AM 1.9/ 2.3 0.5/ 1.0 0.6/ 1.1 0-1 NONE 22/02 PM 2.0/ 2.5 0.6/ 1.1 0.9/ 1.4 1-2 NONE 23/03 AM 3.2/ 3.7 1.9/ 2.3 2.0/ 2.5 2-3 MINOR 23/01 PM 3.4/ 3.9 2.0/ 2.5 2.6/ 3.1 2-3 MIN-MOD GREAT SOUTH BAY AT WATCH HILL/FIRE ISLAND NY MLLW CATEGORIES - MINOR 3.2 FT, MODERATE 3.7 FT, MAJOR 4.2 FT MHHW CATEGORIES - MINOR 1.7 FT, MODERATE 2.2 FT, MAJOR 2.7 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 21/12 AM 1.9/ 2.3 0.4/ 0.9 0.8/ 1.3 0-1 NONE 21/12 PM 1.3/ 1.8 -0.2/ 0.2 0.2/ 0.8 0 NONE 22/02 AM 1.8/ 2.2 0.2/ 0.8 0.5/ 1.0 0 NONE 22/01 PM 1.8/ 2.2 0.2/ 0.8 0.8/ 1.3 2 NONE 23/03 AM 3.4/ 3.9 1.9/ 2.3 2.1/ 2.6 3 MIN-MOD 23/01 PM 3.2/ 3.7 1.8/ 2.2 2.5/ 3.0 3 MIN-MOD MORICHES BAY AT EAST MORICHES NY MLLW CATEGORIES - MINOR 4.3 FT, MODERATE 5.3 FT, MAJOR 6.3 FT MHHW CATEGORIES - MINOR 1.9 FT, MODERATE 2.9 FT, MAJOR 3.9 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 20/11 PM 3.2/ 3.7 0.8/ 1.3 1.1/ 1.6 0-1 NONE 21/11 AM 2.2/ 2.7 -0.2/ 0.3 0.4/ 0.9 0-1 NONE 22/12 AM 3.0/ 3.5 0.6/ 1.1 0.9/ 1.4 0 NONE 22/12 PM 2.8/ 3.4 0.5/ 1.0 1.2/ 1.7 1 NONE 23/01 AM 4.9/ 5.4 2.5/ 3.0 2.7/ 3.2 2 MINOR 23/01 PM 4.2/ 4.7 1.9/ 2.3 2.7/ 3.2 2 MINOR EAST ROCKAWAY INLET AT ATLANTIC BEACH NY MLLW CATEGORIES - MINOR 6.2 FT, MODERATE 7.2 FT, MAJOR 8.2 FT MHHW CATEGORIES - MINOR 1.3 FT, MODERATE 2.3 FT, MAJOR 3.3 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 20/10 PM 5.7/ 6.2 0.9/ 1.4 1.0/ 1.5 2-3 NONE 21/10 AM 4.6/ 5.1 -0.3/ 0.2 0.2/ 0.7 2-3 NONE 21/11 PM 5.5/ 6.0 0.6/ 1.1 0.7/ 1.1 1-2 NONE 22/11 AM 5.4/ 5.9 0.5/ 1.0 1.3/ 1.8 3-4 NONE 23/12 AM 7.2/ 7.7 2.2/ 2.7 2.3/ 2.8 5-6 MODERATE 23/12 PM 6.2/ 6.8 1.4/ 1.9 2.5/ 3.0 7-8 MINOR REYNOLDS CHANNEL AT POINT LOOKOUT NY MLLW CATEGORIES - MINOR 6.0 FT, MODERATE 7.0 FT, MAJOR 8.0 FT MHHW CATEGORIES - MINOR 1.3 FT, MODERATE 2.3 FT, MAJOR 3.3 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 20/10 PM 5.7/ 6.2 1.0/ 1.5 1.2/ 1.7 1 NONE 21/10 AM 4.5/ 5.0 -0.2/ 0.2 0.4/ 0.9 1 NONE 21/11 PM 5.5/ 6.0 0.8/ 1.3 0.9/ 1.4 1 NONE 22/11 AM 5.1/ 5.6 0.4/ 0.9 1.3/ 1.8 2 NONE 23/12 AM 7.0/ 7.5 2.2/ 2.7 2.5/ 3.0 2-3 MODERATE 23/12 PM 6.2/ 6.8 1.6/ 2.0 2.7/ 3.2 2 MINOR HUDSON BAY AT FREEPORT NY MLLW CATEGORIES - MINOR 6.0 FT, MODERATE 6.5 FT, MAJOR 7.2 FT MHHW CATEGORIES - MINOR 1.3 FT, MODERATE 1.8 FT, MAJOR 2.5 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 20/10 PM 5.9/ 6.4 1.2/ 1.7 2.7/ 3.2 0 MINOR 21/11 AM 4.9/ 5.4 0.2/ 0.7 2.0/ 2.5 0 NONE 21/11 PM 5.5/ 6.0 0.8/ 1.3 2.3/ 2.8 0 NONE 22/12 PM 5.5/ 6.0 0.8/ 1.3 2.7/ 3.2 1-2 NONE 23/12 AM 6.9/ 7.4 2.2/ 2.7 3.7/ 4.2 2 MOD-MAJ 23/01 PM 6.8/ 7.3 2.1/ 2.6 4.2/ 4.7 2 MODERATE