Active Weather Alerts
Coastal Flood Warning
Issued: 6:10 PM Dec. 18, 2025 – National Weather Service
...COASTAL FLOOD WARNING IN EFFECT FROM 6 AM TO 11 AM EST FRIDAY... * WHAT...1 1/2 to 2 ft of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...Southwest Suffolk County. * WHEN...From 6 AM to 11 AM EST Friday. * IMPACTS...Widespread minor to moderate flooding of vulnerable areas near the waterfront and shoreline. Expect 1 1/2 to 2 ft of inundation above ground level in low lying, vulnerable areas. This will 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. * SHORELINE IMPACTS...Breaking waves of 8 to 12 ft along the oceanfront during the time of high tide will result in widespread beach flooding and erosion, with scattered areas of dune erosion. Wave splashover is not likely. * ADDITIONAL DETAILS...Heavy rain during the time of high tide may exacerbate flood impacts. This forecast is leaned towards a higher end flood impact scenario, to account for slower trend in cold frontal passage and potential coincidence with heavy rain. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take the necessary actions to protect flood-prone property. If travel is required, do not drive around barricades or through water of unknown depth. && 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 -------- --------- --------- --------- ------- -------- 18/09 PM 1.3/ 1.8 -0.3/ 0.2 0.2/ 0.8 0 NONE 19/09 AM 3.2/ 3.7 1.7/ 2.2 2.0/ 2.5 1-3 MIN-MOD 19/08 PM 0.6/ 1.1 -1.1/-0.6 -0.2/ 0.3 0 NONE 20/09 AM 0.7/ 1.1 -1.0/-0.5 -0.6/-0.1 0 NONE 20/09 PM 0.8/ 1.3 -0.9/-0.4 -0.2/ 0.3 0 NONE 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 -------- --------- --------- --------- ------- -------- 18/10 PM 1.0/ 1.5 -0.5/ 0.0 0.2/ 0.8 1 NONE 19/09 AM 3.2/ 3.7 1.8/ 2.2 2.3/ 2.8 1-3 MINOR 19/10 PM 0.7/ 1.1 -0.8/-0.2 0.0/ 0.5 2 NONE 20/11 AM 0.6/ 1.1 -0.9/-0.4 -0.5/ 0.0 1 NONE 20/11 PM 0.6/ 1.1 -0.9/-0.4 -0.2/ 0.3 1-2 NONE 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 -------- --------- --------- --------- ------- -------- 18/09 PM 0.9/ 1.4 -0.7/-0.2 0.0/ 0.5 0-1 NONE 19/10 AM 3.0/ 3.5 1.5/ 2.0 1.7/ 2.2 0-1 MINOR 19/10 PM 0.2/ 0.8 -1.3/-0.8 -0.7/-0.2 1 NONE 20/11 AM 0.4/ 0.9 -1.1/-0.7 -1.1/-0.6 1 NONE 20/11 PM 0.5/ 1.0 -1.1/-0.6 -0.5/ 0.0 1 NONE 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 -------- --------- --------- --------- ------- -------- 18/08 PM 2.1/ 2.6 -0.3/ 0.2 0.6/ 1.1 0 NONE 19/08 AM 4.4/ 4.9 2.0/ 2.5 2.2/ 2.7 1-2 MINOR 19/06 PM 1.4/ 1.9 -1.1/-0.6 0.4/ 0.9 0 NONE 20/08 AM 1.4/ 1.9 -1.1/-0.6 -0.8/-0.2 0 NONE 20/09 PM 1.7/ 2.2 -0.8/-0.2 0.2/ 0.7 0 NONE 21/09 AM 2.3/ 2.8 0.0/ 0.5 0.2/ 0.8 1 NONE &&
Gale Warning
Issued: 6:03 PM Dec. 18, 2025 – National Weather Service
...GALE WARNING NOW IN EFFECT FROM 6 PM THIS EVENING TO 6 AM EST SATURDAY... * WHAT...Southwest winds 25 to 35 kt with gusts up to 45 kt and seas 5 to 9 feet expected on Long Island Sound. Isolated gusts up to 50 kt possible Friday morning. Winds will shift from southwest to west Friday afternoon. * WHERE...Long Island Sound, New York Harbor, Peconic and Gardiners Bays, and South Shore Bays from Jones Inlet through Shinnecock Bay. * WHEN...From 6 PM this evening to 6 AM EST Saturday. * IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners should alter plans to avoid these hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for hazardous conditions. &&
Wind Advisory
Issued: 5:59 PM Dec. 18, 2025 – National Weather Service
...WIND ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT EST FRIDAY NIGHT... * WHAT...Southwest winds 20 to 30 mph with gusts up to 55 mph expected. Isolated wind gusts up to 60 mph are possible Friday morning. * WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York. * WHEN...From midnight tonight to midnight EST Friday Night. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. * ADDITIONAL DETAILS...Winds will shift from southwest to west Friday afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution. Secure outdoor objects. &&
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