Active Weather Alerts
Small Craft Advisory
Issued: 6:33 AM Oct. 21, 2026 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT THURSDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt and seas 5 to 8 feet, highest on the ocean and eastern Long Island Sound. * WHERE...Long Island Sound, Peconic and Gardiners Bays, South Shore Bays from Jones Inlet through Shinnecock Bay, and Sandy Hook NJ to Fire Island Inlet NY out 20 NM. * WHEN...Until 6 AM 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. &&
Coastal Flood Advisory
Issued: 6:26 AM Oct. 21, 2026 – National Weather Service
...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 PM THIS AFTERNOON TO 9 PM EDT THIS EVENING... * WHAT...Up to one foot of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...Southwest Suffolk County. * WHEN...From 5 PM this afternoon to 9 PM EDT this evening. * IMPACTS...Minor 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. * ADDITIONAL DETAILS...Additional localized minor coastal flooding possible during times of high tide on Thursday. 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 -------- --------- --------- --------- ------- -------- 21/07 AM 2.7/ 3.2 1.2/ 1.7 1.7/ 2.2 0 NONE 21/06 PM 3.2/ 3.7 1.6/ 2.0 2.1/ 2.6 0 MINOR 22/09 AM 3.0/ 3.5 1.4/ 1.9 1.8/ 2.2 0 MINOR 22/07 PM 2.8/ 3.4 1.3/ 1.8 1.7/ 2.2 0 MINOR 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 -------- --------- --------- --------- ------- -------- 21/07 AM 2.6/ 3.1 1.2/ 1.7 1.6/ 2.0 1 NONE 21/08 PM 3.0/ 3.5 1.6/ 2.0 1.8/ 2.2 1 MINOR 22/09 AM 2.8/ 3.4 1.5/ 2.0 1.8/ 2.2 1 NONE=MINOR 22/09 PM 2.7/ 3.2 1.4/ 1.9 1.6/ 2.0 1 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 -------- --------- --------- --------- ------- -------- 21/07 AM 2.7/ 3.2 1.2/ 1.7 1.7/ 2.2 1 NONE 21/08 PM 3.0/ 3.5 1.5/ 2.0 1.8/ 2.2 1 MINOR 22/08 AM 2.7/ 3.2 1.3/ 1.8 1.8/ 2.2 1 NONE 22/08 PM 2.8/ 3.4 1.4/ 1.9 1.8/ 2.2 1 NONE &&
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