HLSOKX CTZ005>012-NJZ002-004-006-103>108-NYZ067>075-078>081-176>179-211200- Tropical Storm Henri Local Statement Advisory Number 21 National Weather Service New York NY AL082021 1201 AM EDT Sat Aug 21 2021 This product covers Southeastern New York, Northeastern New Jersey, and Southern Connecticut HURRICANE CONDITIONS EXPECTED ACROSS PORTIONS OF LONG ISLAND AND SOUTHERN CONNECTICUT NEW INFORMATION --------------- * CHANGES TO WATCHES AND WARNINGS: - The Tropical Storm Watch has been upgraded to a Tropical Storm Warning for Eastern Bergen, Eastern Essex, Eastern Union, Hudson, Kings (Brooklyn), New York (Manhattan), Northern Fairfield, Northern Westchester, Richmond (Staten Island), and Southern Queens - The Storm Surge Watch has been upgraded to a Storm Surge Warning and the Tropical Storm Watch has been upgraded to a Tropical Storm Warning for Bronx and Northern Queens - The Storm Surge Watch has been upgraded to a Storm Surge Warning for Northern Nassau and Southern Westchester - The Hurricane Watch has been upgraded to a Hurricane Warning for Northern Middlesex, Northern New Haven, and Northern New London * CURRENT WATCHES AND WARNINGS: - A Hurricane Warning and Storm Surge Watch are in effect for Southwest Suffolk - A Tropical Storm Warning is in effect for Eastern Bergen, Eastern Essex, Eastern Union, Hudson, Kings (Brooklyn), New York (Manhattan), Northern Fairfield, Northern Westchester, Richmond (Staten Island), and Southern Queens - A Tropical Storm Warning and Storm Surge Watch are in effect for Southern Nassau - A Hurricane Warning is in effect for Northern Middlesex, Northern New Haven, and Northern New London - A Storm Surge Warning and Hurricane Warning are in effect for Northeast Suffolk, Northwest Suffolk, Southeast Suffolk, Southern Middlesex, Southern New Haven, and Southern New London - A Storm Surge Warning and Tropical Storm Warning are in effect for Bronx, Northern Nassau, Northern Queens, Southern Fairfield, and Southern Westchester * STORM INFORMATION: - About 590 miles south of New York City NY or about 610 miles south of Montauk Point NY - 32.3N 73.5W - Storm Intensity 70 mph - Movement North or 10 degrees at 9 mph SITUATION OVERVIEW ------------------ Tropical Storm Henri is currently 615 miles south of Montauk Point and will likely track north across Long Island and into southern New England Sunday as a Category 1 Hurricane. The main threats from Henri are potentially life-threatening storm surge, heavy rain capable of producing flash flooding, tropical storm or hurricane force winds along the south shore and Long Island and across southern Connecticut. There will also be associated marine and coastal hazards, including very rough seas and dangerous rip currents. Severe beach erosion is possible for coastal areas of Long Island Sound and portions of Suffolk County, including the Twin Forks region. A widespread rainfall of 3 to 6 inches is forecast in the path of Henri with localized higher amounts possible Saturday through Sunday night. The highest amounts are forecast to be across eastern Long Island and much of southern Connecticut. This will present a likelihood for areas of flash flooding. Dangerous marine conditions are likely on the ocean waters south of Long Island, as well as on Long Island Sound, and the south shore and eastern bays of Long Island. Hurricane force winds will be most likely in those areas. Dangerous rip currents and high surf are expected along the ocean beaches of Long Island beginning Friday. POTENTIAL IMPACTS ----------------- * WIND: Protect against life-threatening wind having possible devastating impacts across eastern Long Island and southern Connecticut. Potential impacts in this area include: - Structural damage to sturdy buildings, some with complete roof and wall failures. Complete destruction of mobile homes. Damage greatly accentuated by large airborne projectiles. Locations may be uninhabitable for weeks or months. - Numerous large trees snapped or uprooted along with fences and roadway signs blown over. - Many roads impassable from large debris, and more within urban or heavily wooded places. Many bridges, causeways, and access routes impassable. - Widespread power and communications outages. Also, protect against life-threatening wind having possible significant to extensive impacts across the New York City metro, portions of the Lower Hudson Valley, and portions of northeastern New Jersey. * SURGE: Protect against life-threatening surge having possible significant impacts across all coastal areas of Long Island Sound, and much of the Great South Bay and southeast coast of Long Island. Potential impacts in this area include: - Areas of inundation with storm surge flooding accentuated by waves. Damage to several buildings, mainly near the coast. - Sections of near shore escape routes and secondary roads become weakened or washed out, especially in usually vulnerable low spots. Flood control systems and barriers may become stressed. - Major beach erosion with heavy surf breaching dunes. Very dangerous surf and rip currents. - Moderate damage to marinas, docks, boardwalks, and piers. Several small craft broken away from moorings, especially in unprotected anchorages. Also, protect against locally hazardous surge having possible limited impacts across Jamaica Bay, and New York Harbor. Elsewhere across Southeast New York, Northeast New Jersey, and Southern Connecticut, little to no impact is anticipated. * FLOODING RAIN: Protect against life-threatening rainfall flooding having possible extensive impacts across Long Island and southern Connecticut. Potential impacts include: - Major rainfall flooding may prompt many evacuations and rescues. - Rivers and streams may rapidly overflow their banks in multiple places. Small streams, creeks, canals, and ditches may become dangerous rivers. Flood control systems and barriers may become stressed. - In hilly terrain, destructive runoff may run quickly down valleys, and increase susceptibility to rockslides and mudslides. - Flood waters can enter many structures within multiple communities, some structures becoming uninhabitable or washed away. Many places where flood waters may cover escape routes. Streets and parking lots become rivers of moving water with underpasses submerged. Driving conditions become dangerous. Many road and bridge closures with some weakened or washed out. Protect against dangerous rainfall flooding having possible significant impacts across northeastern New Jersey, New York City, and the lower Hudson Valley. * TORNADOES: Little to no impacts are anticipated at this time across Southeast New York, Northeast New Jersey, and Southern Connecticut. PRECAUTIONARY/PREPAREDNESS ACTIONS ---------------------------------- * EVACUATIONS: WATCH/WARNING PHASE - Listen to local official for recommended preparedness actions, including possible evacuation. If ordered to evacuate, do so immediately. WATCH/WARNING PHASE - For those not under evacuation orders, assess the risk from wind, falling trees, and flooding at your location. If you decide to move, relocate to a safer location nearby. If you do not relocate, help keep roadways open for those under evacuation orders. * OTHER PREPAREDNESS INFORMATION: Saturday is the time to complete all preparations to protect life and property in accordance with your emergency plan. Make sure you are in a safe location before the onset of strong winds or possible flooding. If you are relocating to safe shelter, leave as early as possible. Allow extra time to reach your destination. Many roads and bridges may be closed once strong winds arrive. Check the latest weather forecast before departing and drive with caution. Failure to adequately shelter may result in serious injury or loss of life. Always heed the advice of local officials and comply with any orders that are issued. Remember that during the storm 9 1 1 Emergency Services may not be able to immediately respond if conditions are unsafe. This should be a big factor in your decision making. Storm surge is the leading killer associated with tropical storms and hurricanes! Make sure you are in a safe area away from the surge zone. Even if you are not in a surge prone area, you could find yourself cut off by flood waters during and after the storm. Heed evacuation orders issued by local authorities. If in a place that is vulnerable to high winds, such as near large trees, a mobile home, upper floors of a high rise building, or on a boat, consider moving to a safer shelter before the onset of strong winds or flooding. Closely monitor http://weather.gov, NOAA Weather radio or local news outlets for official storm information. Be ready to adapt to possible changes to the forecast. Ensure you have multiple ways to receive weather warnings. * ADDITIONAL SOURCES OF INFORMATION: - For information on appropriate preparations see http://ready.gov - For information on creating an emergency plan see http://getagameplan.org - For additional disaster preparedness information see http://redcross.org NEXT UPDATE ----------- The next local statement will be issued by the National Weather Service in New York NY around 6 AM EDT Saturday, or sooner if conditions warrant. $$ $$