[Tropical] Hurricane Local Statement

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DEZ001>004-MDZ008-012-015-019-020-NJZ001-007>010-012>027-PAZ070-071-101>106-050000-

Tropical Storm Isaias Local Statement Advisory Number 30
National Weather Service Mount Holly NJ  AL092020
1121 AM EDT Tue Aug 4 2020

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

** Isaias Continues to Impact the Region through This Evening **

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 90 miles west of Atlantic City NJ or about 30 miles west
      of Dover DE
    - 39.1N 76.1W
    - Storm Intensity 70 mph
    - Movement North-northeast or 20 degrees at 35 mph

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

Tropical Storm Isaias is passing over Delmarva and will continue to
track northward, and then northeastward along the East Coast of the
United States. Isaias will lift north of the region by early this
evening. Impacts will diminish from late this afternoon into tonight.

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

Four to six inches of rain with locally higher amounts will 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 50 to 60 mph. Tornadoes have impacted Delmarva, and
tornadoes will affect portions of New Jersey and southeast Pennsylvania
into this afternoon. 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 12 to 18
foot seas are also expected over the waters.

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

* FLOODING RAIN:
Potential impacts from the flooding rain are still unfolding across
Delmarva, western New Jersey, and eastern Pennsylvania. Remain well
guarded against life-threatening flood waters having additional
devastating impacts. If realized, these impacts include:
    - Extreme rainfall flooding may prompt numerous evacuations and
      rescues.
    - Rivers and tributaries may overwhelmingly overflow their banks
      in many places with deep moving water. Small streams, creeks,
      canals, arroyos, and ditches may become raging rivers. In
      mountain areas, deadly runoff may rage down valleys while
      increasing susceptibility to rockslides and mudslides. Flood
      control systems and barriers may become stressed.
    - Flood waters can enter numerous structures within multiple
      communities, some structures becoming uninhabitable or washed
      away. Numerous places where flood waters may cover escape
      routes. Streets and parking lots become rivers of raging water
      with underpasses submerged. Driving conditions become very
      dangerous. Numerous road and bridge closures with some weakened
      or washed out.

Potential impacts from the flooding rain are still unfolding across
coastal New Jersey and Delaware. Remain well guarded against life-
threatening flood waters having additional significant to extensive
impacts.

* WIND:
Potential impacts from the main wind event are now unfolding across
NEW JERSEY...DELAWARE...SOUTHEASTERN PENNSYLVANIA AND NORTHEAST
MARYLAND. Remain well sheltered from dangerous wind having additional
significant impacts. If realized, these 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.

* TORNADOES:
Potential impacts from tornadoes are still unfolding across New
Jersey, eastern Pennsylvania, and Delmarva. Remain well braced against
a dangerous tornado event having additional significant impacts. If
realized, these impacts include:
    - The occurrence of scattered tornadoes can hinder the execution
      of emergency plans during tropical events.
    - Several places may experience tornado damage with a few spots
      of considerable damage, power loss, and communications failures.
    - Locations could realize roofs torn off frame houses, mobile
      homes demolished, boxcars overturned, large trees snapped or
      uprooted, vehicles tumbled, and small boats tossed about.
      Dangerous projectiles can add to the toll.

* SURGE:
Potential impacts from the main surge event are now unfolding across
Delaware Bay, the tidal Delaware River, northeastern Chesapeake Bay,
and the Atlantic coasts of New Jersey and Delaware. Remain well away
from locally hazardous surge having additional limited impacts. If
realized, these impacts 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.

Elsewhere across NEW JERSEY...DELAWARE...SOUTHEASTERN PENNSYLVANIA
AND NORTHEAST MARYLAND, little to no impact is anticipated.

PRECAUTIONARY/PREPAREDNESS ACTIONS
----------------------------------

* OTHER PREPAREDNESS INFORMATION:
Now is the time to stay inside and away from windows. Listen for
updates and be ready in case you lose electrical power. Keep a battery-
powered radio, charged cell phone and flashlight handy.

Keep your cell phone charged and in power-saving mode. If you lose
power, use it sparingly and mainly for personal emergencies and check-
ins.

Do not venture outside while in the eye of a hurricane as any
improvement in weather will only be temporary. Once the eye passes,
conditions will become life threatening as winds immediately return
to dangerous speeds, so remain safely sheltered from the storm.

Do not be a thrill seeker or risk your life for senseless photos or
videos.

Quickly move to the safest place within your shelter if it begins to
fail, preferably an interior room on the lowest floor as long as
flooding is not a concern.

If you are prone to flooding or in an area under a storm surge watch
or warning, be prepared for the possibility of a quick and dramatic
rise in water levels.

If a tornado warning is issued for your area, quickly move to the
safest place within your shelter. Protect your head and body.

* 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 PM EDT, or sooner if conditions
warrant.

$$

MPS
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