Active Weather Alerts
Coastal Flood Warning
Issued: 7:53 PM Aug. 20, 2025 – National Weather Service
...COASTAL FLOOD WARNING IN EFFECT FROM 5 PM THURSDAY TO 3 AM EDT FRIDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 AM TO 2 PM EDT FRIDAY... * WHAT...For the Coastal Flood Warning, up to 2 ft of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. For the Coastal Flood Advisory, around 1 ft of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...Northeast Suffolk County. * WHEN...For the Coastal Flood Warning, from 5 PM Thursday to 3 AM EDT Friday. For the Coastal Flood Advisory, from 5 AM to 2 PM EDT Friday. * COASTAL FLOOD IMPACTS...Widespread minor to locally moderate flooding of vulnerable areas near the waterfront and shoreline with Thursday evening's high tide. Expect 1 1/2 to 2 ft of inundation above ground level in low lying, vulnerable areas, particularly near Orient Point and the Peconic River. This will result in several road closures and cause 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. * SHORELINE IMPACTS...Along Orient point, 3 to 5 ft breaking waves will result in beach erosion and locally moderate flooding of shoreline roads and properties during the Thursday evening high tide. 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. PECONIC RIVER AT RIVERHEAD NY MLLW CATEGORIES - MINOR 5.7 FT, MODERATE 6.4 FT, MAJOR 7.2 FT MHHW CATEGORIES - MINOR 2.3 FT, MODERATE 3.0 FT, MAJOR 3.8 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 20/10 PM 4.4/ 4.9 1.0/ 1.5 1.2/ 1.7 1-2 NONE 21/11 AM 4.4/ 4.9 1.0/ 1.5 1.7/ 2.2 2 NONE 21/11 PM 5.6/ 6.1 2.2/ 2.7 2.3/ 2.8 2 MINOR 22/12 PM 5.2/ 5.7 1.9/ 2.3 2.5/ 3.0 2 MINOR 22/11 PM 5.2/ 5.7 1.9/ 2.3 2.5/ 3.0 1 MINOR 23/12 PM 4.0/ 4.5 0.7/ 1.1 1.3/ 1.8 1 NONE ORIENT HARBOR AT ORIENT POINT NY MLLW CATEGORIES - MINOR 4.8 FT, MODERATE 5.8 FT, MAJOR 6.8 FT MHHW CATEGORIES - MINOR 1.8 FT, MODERATE 2.8 FT, MAJOR 3.8 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 20/09 PM 3.4/ 3.9 0.4/ 0.9 0.2/ 0.7 2-3 NONE 21/09 AM 3.0/ 3.5 0.0/ 0.5 0.4/ 0.9 2-4 NONE 21/10 PM 4.7/ 5.2 1.7/ 2.2 1.5/ 2.0 3-6 MINOR 22/10 AM 4.2/ 4.7 1.3/ 1.8 1.5/ 2.0 3-5 MINOR 22/10 PM 4.5/ 5.0 1.5/ 2.0 1.4/ 1.9 2-4 MINOR 23/11 AM 3.2/ 3.7 0.2/ 0.8 0.4/ 0.9 2-3 NONE 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 -------- --------- --------- --------- ------- -------- 20/09 PM 8.7/ 9.2 1.4/ 1.9 1.7/ 2.2 1-2 NONE 21/10 AM 8.4/ 8.9 1.1/ 1.6 1.7/ 2.2 2 NONE 21/11 PM 9.6/10.1 2.2/ 2.7 2.1/ 2.6 3-4 MINOR 22/11 AM 8.8/ 9.3 1.5/ 2.0 1.8/ 2.2 2-3 NONE 23/12 AM 9.0/ 9.5 1.7/ 2.2 1.6/ 2.0 1 NONE 23/11 AM 8.5/ 9.0 1.2/ 1.7 1.8/ 2.2 0 NONE &&
Coastal Flood Advisory
Issued: 7:53 PM Aug. 20, 2025 – National Weather Service
...COASTAL FLOOD WARNING IN EFFECT FROM 5 PM THURSDAY TO 3 AM EDT FRIDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 5 AM TO 2 PM EDT FRIDAY... * WHAT...For the Coastal Flood Warning, up to 2 ft of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. For the Coastal Flood Advisory, around 1 ft of inundation above ground level expected in vulnerable areas near the waterfront and shoreline. * WHERE...Northeast Suffolk County. * WHEN...For the Coastal Flood Warning, from 5 PM Thursday to 3 AM EDT Friday. For the Coastal Flood Advisory, from 5 AM to 2 PM EDT Friday. * COASTAL FLOOD IMPACTS...Widespread minor to locally moderate flooding of vulnerable areas near the waterfront and shoreline with Thursday evening's high tide. Expect 1 1/2 to 2 ft of inundation above ground level in low lying, vulnerable areas, particularly near Orient Point and the Peconic River. This will result in several road closures and cause 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. * SHORELINE IMPACTS...Along Orient point, 3 to 5 ft breaking waves will result in beach erosion and locally moderate flooding of shoreline roads and properties during the Thursday evening high tide. 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. PECONIC RIVER AT RIVERHEAD NY MLLW CATEGORIES - MINOR 5.7 FT, MODERATE 6.4 FT, MAJOR 7.2 FT MHHW CATEGORIES - MINOR 2.3 FT, MODERATE 3.0 FT, MAJOR 3.8 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 20/10 PM 4.4/ 4.9 1.0/ 1.5 1.2/ 1.7 1-2 NONE 21/11 AM 4.4/ 4.9 1.0/ 1.5 1.7/ 2.2 2 NONE 21/11 PM 5.6/ 6.1 2.2/ 2.7 2.3/ 2.8 2 MINOR 22/12 PM 5.2/ 5.7 1.9/ 2.3 2.5/ 3.0 2 MINOR 22/11 PM 5.2/ 5.7 1.9/ 2.3 2.5/ 3.0 1 MINOR 23/12 PM 4.0/ 4.5 0.7/ 1.1 1.3/ 1.8 1 NONE ORIENT HARBOR AT ORIENT POINT NY MLLW CATEGORIES - MINOR 4.8 FT, MODERATE 5.8 FT, MAJOR 6.8 FT MHHW CATEGORIES - MINOR 1.8 FT, MODERATE 2.8 FT, MAJOR 3.8 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 20/09 PM 3.4/ 3.9 0.4/ 0.9 0.2/ 0.7 2-3 NONE 21/09 AM 3.0/ 3.5 0.0/ 0.5 0.4/ 0.9 2-4 NONE 21/10 PM 4.7/ 5.2 1.7/ 2.2 1.5/ 2.0 3-6 MINOR 22/10 AM 4.2/ 4.7 1.3/ 1.8 1.5/ 2.0 3-5 MINOR 22/10 PM 4.5/ 5.0 1.5/ 2.0 1.4/ 1.9 2-4 MINOR 23/11 AM 3.2/ 3.7 0.2/ 0.8 0.4/ 0.9 2-3 NONE 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 -------- --------- --------- --------- ------- -------- 20/09 PM 8.7/ 9.2 1.4/ 1.9 1.7/ 2.2 1-2 NONE 21/10 AM 8.4/ 8.9 1.1/ 1.6 1.7/ 2.2 2 NONE 21/11 PM 9.6/10.1 2.2/ 2.7 2.1/ 2.6 3-4 MINOR 22/11 AM 8.8/ 9.3 1.5/ 2.0 1.8/ 2.2 2-3 NONE 23/12 AM 9.0/ 9.5 1.7/ 2.2 1.6/ 2.0 1 NONE 23/11 AM 8.5/ 9.0 1.2/ 1.7 1.8/ 2.2 0 NONE &&
Small Craft Advisory
Issued: 6:08 PM Aug. 20, 2025 – National Weather Service
...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 6 PM THIS EVENING TO 2 PM EDT FRIDAY... * WHAT...Northeast winds 15 to 25 kt with gusts up to 30 kt. Seas 3 to 6 feet expected on the Sound. * WHERE...Long Island Sound east of Port Jefferson and New Haven, Peconic and Gardiners Bays, and South Shore Bays from Jones Inlet through Shinnecock Bay. * WHEN...From 6 PM this evening to 2 PM EDT Friday. * 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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