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Tropical Storm Isaias Local Statement Advisory Number 29
National Weather Service New York NY AL092020
605 AM EDT Tue Aug 4 2020
This product covers Southeast New York, Northeast New Jersey, and Southern Connecticut
**ISAIAS IS MOVING NORTH OVER CENTRAL VIRGINIA**
NEW INFORMATION
---------------
* CHANGES TO WATCHES AND WARNINGS:
- None
* 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 360 miles south-southwest of New York City NY or about
450 miles southwest of Montauk Point NY
- 36.3N 77.5W
- Storm Intensity 70 mph
- Movement North-northeast or 20 degrees at 28 mph
SITUATION OVERVIEW
------------------
Tropical Storm Isaias, located in inland Virginia, will continue
to move to north-northeast this morning along the Mid-Atlantic coast.
Isaias will slowly weaken as it accelerates northeast today, likely
moving over our area this afternoon and evening. 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. Additionally, a few tornadoes are possible.
Locally heavy rainfall is expected with a widespread 1 to 3 inches,
with localized amounts up to 5 inches possible. The heaviest rain is
most likely to occur across New York City, Northeast New Jersey and
the Lower Hudson Valley this morning through this evening, and eastern
sections this afternoon into tonight. The strongest winds are likely
to occur across New York City Metro, Long Island, northeast New
Jersey, southern portions of the Lower Hudson Valley, and southeast
Connecticut. Dangerous marine conditions are likely across all of the
coastal waters today and tonight. High surf and dangerous rip currents
are expected to continue along the ocean beaches Today through
Wednesday.
The effects from Tropical Storm Isaias are expected to diminish
quickly from southwest to northeast across the area late tonight into
Wednesday morning.
POTENTIAL IMPACTS
-----------------
* FLOODING RAIN:
Protect against life-threatening rainfall flooding having possible
extensive impacts across New Jersey, New York City, the Lower Hudson
Valley, and portions of southeastern 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.
* WIND:
Protect against dangerous wind having possible significant impacts
across Southeast New York, Northeast New Jersey, and Southern
Connecticut. Potential impacts in this area 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:
Protect against 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.
Elsewhere across Southeast New York, Northeast New Jersey, and
Southern Connecticut, little to no impact is anticipated.
* TORNADOES:
Protect against 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.
PRECAUTIONARY/PREPAREDNESS ACTIONS
----------------------------------
Now is the time to check your emergency plan and emergency supplies
kit and take necessary actions to protect your family and secure your
home or business.
Keep cell phones well charged. Cell phone chargers for automobiles
can be helpful, but be aware of your risk for deadly carbon monoxide
poisoning if your car is left idling in a garage or other poorly
ventilated area.
Rapidly rising flood waters are deadly. If you are in a flood prone
area, consider moving to higher ground. Never drive through a flooded
roadway. Remember, Turn Around Don't Drown!
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.
If a Tornado Warning is issued for your area, be ready to shelter
quickly, preferably away from windows and in an interior room not
prone to flooding. If driving, scan the roadside for quick shelter
options.
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 12 PM, or sooner if conditions warrant.
$$