[Tropical] Hurricane Local Statement

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Tropical Storm Isaias Local Statement Advisory Number 27
National Weather Service Mount Holly NJ  AL092020
530 PM EDT Mon Aug 3 2020

This product covers NEW JERSEY...DELAWARE...SOUTHEASTERN PENNSYLVANIA AND NORTHEAST MARYLAND

**Tropical Storm Isaias Will Impact the Area Tuesday morning through
 Tuesday night**

NEW INFORMATION
---------------

* CHANGES TO WATCHES AND WARNINGS:
    - None

* CURRENT WATCHES AND WARNINGS:
    - A Tropical Storm Warning is in effect for Atlantic, Atlantic
      Coastal Cape May, Camden, Cape May, Caroline, Cecil, Coastal
      Atlantic, Coastal Ocean, Cumberland, Delaware, Delaware
      Beaches, Eastern Chester, Eastern Monmouth, Eastern Montgomery,
      Gloucester, Hunterdon, Inland Sussex, Kent, Kent MD, Lower
      Bucks, Mercer, Middlesex, Morris, New Castle, Northwestern
      Burlington, Ocean, Philadelphia, Queen Annes, Salem, Somerset,
      Southeastern Burlington, Sussex, Talbot, Upper Bucks, Warren,
      Western Chester, Western Monmouth, and Western Montgomery

* STORM INFORMATION:
    - About 580 miles south-southwest of Atlantic City NJ or about
      540 miles south-southwest of Dover DE
    - 32.0N 79.4W
    - Storm Intensity 70 mph
    - Movement North-northeast or 15 degrees at 16 mph

SITUATION OVERVIEW
------------------

Tropical Storm Isaias is currently located just offshore of the South
Carolina coast and will continue northward along the East Coast,
likely moving inland over the Carolinas this evening. Isaias will
approach Delmarva by late tonight and pass through the region on
Tuesday. Impacts will diminish Tuesday night.

The main threats with this system are heavy rainfall resulting in
widespread flash flooding as well as some river flooding, as well as
strong and damaging winds, especially near the coast. In addition,
minor to potentially moderate coastal flooding, and dangerous marine
conditions will occur.

Four to six inches of rain with locally higher amounts would result
in flash flooding. Strong winds along the New Jersey and Delaware
coasts with wind gusts of 65 to 75 mph are possible, and wind gusts
inland will range from 55 to 65 mph. Secondary threats include minor
to locally moderate coastal flooding, especially in Chesapeake Bay,
as well as the potential for isolated tornadoes. Dangerous rip
currents and 8 to 12 foot seas are also expected over the waters.

POTENTIAL IMPACTS
-----------------

* WIND:
Protect against dangerous wind having possible significant impacts
across New Jersey, northern Delmarva, and much of southeastern
Pennsylvania. 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.

Also, protect against hazardous wind having possible limited impacts
across southeast Maryland and far northern New Jersey.

* FLOODING RAIN:
Protect against life-threatening rainfall flooding having possible
extensive impacts across Delmarva, western New Jersey, and southeast
Pennsylvania. Potential impacts include:
    - Major rainfall flooding may prompt many evacuations and rescues.
    - Rivers and tributaries may rapidly overflow their banks in
      multiple places. Small streams, creeks, canals, arroyos, and
      ditches may become dangerous rivers. In mountain areas,
      destructive runoff may run quickly down valleys while
      increasing susceptibility to rockslides and mudslides. Flood
      control systems and barriers may become stressed.
    - 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 coastal New Jersey and Delaware.

* SURGE:
Protect against locally hazardous surge having possible limited
impacts along Delaware Bay, the tidal Delaware River, northeastern
Chesapeake Bay, and the Atlantic coasts of New Jersey and Delaware.
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 rip currents.
    - Minor to locally moderate damage to marinas, docks, boardwalks,
      and piers. A few small craft broken away from moorings.

* TORNADOES:
Protect against a tornado event having possible limited impacts
across NEW JERSEY...DELAWARE...SOUTHEASTERN PENNSYLVANIA AND
NORTHEAST MARYLAND. 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
----------------------------------

* OTHER PREPAREDNESS INFORMATION:
Now is the time to complete all preparations to protect life and
property in accordance with your emergency plan. Ensure you are in a
safe location before the onset of strong winds or possible flooding.

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.

It is important to remain calm, informed, and focused during an
emergency. Be patient and helpful with those you encounter.

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!

If in a place that is vulnerable to high wind, such as near large
trees, a manufactured 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 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 ready.gov
- For information on creating an emergency plan see getagameplan.org
- For additional disaster preparedness information see redcross.org

NEXT UPDATE
-----------

The next local statement will be issued by the National Weather
Service in Mount Holly NJ around 6 AM EDT, or sooner if conditions
warrant.

$$

MPS
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