Active Weather Alerts
Coastal Flood Advisory
Issued: 8:36 PM May. 21, 2025 – National Weather Service
...COASTAL FLOOD ADVISORY IN EFFECT FROM 6 PM TO 10 PM EDT THURSDAY... * WHAT...Up to 1 1/2 ft of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...Northwest Suffolk and Northern Nassau Counties. * WHEN...From 6 PM to 10 PM EDT Thursday. * COASTAL FLOOD IMPACTS...Minor flooding in the most vulnerable locations near the waterfront and shoreline. Expect up to 1 1/2 feet of inundation above ground level in low lying, vulnerable areas. Some roads and low lying property including parking lots, parks, lawns and homes/businesses with basements near the waterfront will experience shallow flooding. * SHORELINE IMPACTS...Breaking waves of 3 to 4 ft will cause dune erosion, localized washovers, as well as enhance splashover and flooding onto shoreline roads and properties. 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. FLAX POND AT OLD FIELD NY MLLW CATEGORIES - MINOR 9.2 FT, MODERATE 10.2 FT, MAJOR 12.2 FT MHHW CATEGORIES - MINOR 1.9 FT, MODERATE 2.9 FT, MAJOR 4.9 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 21/07 PM 8.0/ 8.5 0.7/ 1.1 0.9/ 1.4 1-2 NONE 22/07 AM 8.2/ 8.7 0.9/ 1.4 1.5/ 2.0 1-3 NONE 22/07 PM 9.5/10.0 2.2/ 2.7 2.3/ 2.8 2-4 MINOR 23/08 AM 6.8/ 7.3 -0.6/-0.1 0.0/ 0.5 1 NONE 23/09 PM 8.1/ 8.6 0.8/ 1.3 0.2/ 0.7 1 NONE 24/09 AM 7.0/ 7.5 -0.3/ 0.2 0.0/ 0.5 1-2 NONE WEST POND AT GLEN COVE NY MLLW CATEGORIES - MINOR 10.1 FT, MODERATE 11.1 FT, MAJOR 13.1 FT MHHW CATEGORIES - MINOR 2.2 FT, MODERATE 3.2 FT, MAJOR 5.2 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 21/07 PM 8.8/ 9.3 0.9/ 1.4 1.0/ 1.5 0 NONE 22/08 AM 9.0/ 9.5 1.1/ 1.6 1.7/ 2.2 1-3 NONE 22/08 PM 10.3/10.8 2.3/ 2.8 2.0/ 2.5 2-4 MINOR 23/08 AM 7.4/ 7.9 -0.6/-0.1 0.0/ 0.5 2 NONE 23/09 PM 9.0/ 9.5 1.1/ 1.6 0.2/ 0.8 1 NONE 24/09 AM 7.5/ 8.0 -0.5/ 0.0 -0.2/ 0.3 1 NONE LITTLE NECK BAY AT KINGS POINT NY MLLW CATEGORIES - MINOR 10.0 FT, MODERATE 10.5 FT, MAJOR 13.0 FT MHHW CATEGORIES - MINOR 2.2 FT, MODERATE 2.7 FT, MAJOR 5.2 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 21/07 PM 8.8/ 9.3 1.0/ 1.5 1.2/ 1.7 0 NONE 22/07 AM 9.2/ 9.7 1.4/ 1.9 1.9/ 2.3 0 NONE 22/08 PM 10.2/10.7 2.3/ 2.8 2.1/ 2.6 1-3 MINOR 23/08 AM 7.5/ 8.0 -0.3/ 0.2 0.1/ 0.6 1-2 NONE 23/09 PM 8.9/ 9.4 1.1/ 1.6 0.4/ 0.9 1 NONE 24/09 AM 7.7/ 8.2 -0.2/ 0.3 0.1/ 0.6 1 NONE &&
Small Craft Advisory
Issued: 7:35 PM May. 21, 2025 – National Weather Service
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 6 PM EDT THURSDAY... * WHAT...East winds 15 to 25 kt with gusts up to 30 kt. * WHERE...Long Island Sound west of Port Jefferson and New Haven, New York Harbor, and South Shore Bays from Jones Inlet through Shinnecock Bay. * WHEN...Until 6 PM EDT Thursday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. &&
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