Weather Alert  

TROPICAL STORM ISAIAS MOVING NORTHWARD ALONG THE EASTERN SEABOARD This product covers Southeast New York, Northeast New Jersey, and Southern Connecticut **TROPICAL STORM ISAIAS MOVING NORTHWARD ALONG THE EASTERN SEABOARD** NEW INFORMATION --------------- * CHANGES TO WATCHES AND WARNINGS: - The Tropical Storm Watch has been upgraded to a Tropical Storm Warning for Northern Fairfield, Northern Middlesex, Northern New Haven, Northern New London, Northern Westchester, Orange, Putnam, Rockland, and Western Passaic * CURRENT WATCHES AND WARNINGS: - A Tropical Storm Warning is in effect for Bronx, Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern Union, Hudson, Kings (Brooklyn), New York (Manhattan), Northeastern Suffolk, Northern Fairfield, Northern Middlesex, Northern Nassau, Northern New Haven, Northern New London, Northern Queens, Northern Westchester, Northwestern Suffolk, Orange, Putnam, Richmond (Staten Island), Rockland, Southeastern Suffolk, Southern Fairfield, Southern Middlesex, Southern Nassau, Southern New Haven, Southern New London, Southern Queens, Southern Westchester, Southwestern Suffolk, Western Bergen, Western Essex, Western Passaic, and Western Union * STORM INFORMATION: - About 770 miles south-southwest of New York City NY or about 850 miles southwest of Montauk Point NY - 30.7N 80.1W - Storm Intensity 70 mph - Movement North or 360 degrees at 13 mph SITUATION OVERVIEW ------------------ Tropical Storm Isaias, located off the north Florida coast, will continue to move to the north this morning, turning north-northeast this afternoon along the southeast coast. Isaias will continue moving northeast tonight over Eastern North Carolina. Isaias will slowly weaken as it accelerates northeast on Tuesday, likely moving over our area Tuesday afternoon and evening. There is still some timing and intensity uncertainty with this storm. However, confidence continues to increase with respect to the magnitude of local hazards and impacts. The main threats with this system involve heavy rainfall, strong winds, minor to moderate coastal flooding, along with high surf and dangerous rip currents. Locally heavy rain is expected with a widespread 2 to 4 inches, with localized amounts up to 6 inches possible. The heaviest rain is most likely to occur across New York City, Northeast New Jersey and the Lower Hudson Valley early Tuesday morning through Tuesday evening, and eastern sections Tuesday afternoon into Tuesday night. The strongest winds are likely to occur across Long Island, southern Westchester and southern Connecticut, and the New York City and New Jersey Metro areas. Dangerous marine conditions are likely across all of the coastal waters Tuesday and Tuesday night. High surf and dangerous rip currents are expected along the ocean beaches Monday through Wednesday. The effects from Tropical Storm Isaias are expected to diminish quickly from southwest to northeast across the area Tuesday night. POTENTIAL IMPACTS ----------------- * FLOODING RAIN: Prepare for life-threatening rainfall flooding having possible extensive impacts across northeast New Jersey, New York City, and the Lower Hudson Valley. 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. * WIND: Prepare for dangerous wind having possible significant impacts across Southeast New York, Northeast New Jersey, and Southern Connecticut. Potential impacts include: - Some damage to roofing and siding materials, along with damage to porches, awnings, carports, and sheds. A few buildings experiencing window, door, and garage door failures. Mobile homes damaged, especially if unanchored. Unsecured lightweight objects become dangerous projectiles. - Several large trees snapped or uprooted, but with greater numbers in places where trees are shallow rooted. Several fences and roadway signs blown over. - Some roads impassable from large debris, and more within urban or heavily wooded places. A few bridges, causeways, and access routes impassable. - Scattered power and communications outages, but more prevalent in areas with above ground lines. * SURGE: Prepare for locally hazardous surge having possible limited impacts across shoreline communities. Potential impacts in this area include: - Localized inundation with storm surge flooding mainly along immediate shorelines and in low lying spots, or in areas farther inland near where higher surge waters move ashore. - Sections of near shore roads and parking lots become overspread with surge water. Driving conditions dangerous in places where surge water covers the road. - Moderate beach erosion. Heavy surf also breaching dunes, mainly in usually vulnerable locations. Strong and frequent rip currents. - Minor to locally moderate damage to marinas, docks, boardwalks, and piers. A few small craft broken away from moorings. * TORNADOES: Prepare for a tornado event having possible limited impacts across Southeast New York, Northeast New Jersey, and Southern Connecticut. Potential impacts include: - The occurrence of isolated tornadoes can hinder the execution of emergency plans during tropical events. - A few places may experience tornado damage, along with power and communications disruptions. - Locations could realize roofs peeled off buildings, chimneys toppled, mobile homes pushed off foundations or overturned, large tree tops and branches snapped off, shallow rooted trees knocked over, moving vehicles blown off roads, and small boats pulled from moorings.

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