[Tropical] Hurricane Local Statement

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Tropical Storm Isaias Local Statement Advisory Number 10
National Weather Service Miami FL  AL092020
526 PM EDT Thu Jul 30 2020

This product covers South Florida

**Tropical Storm Watches Now In Effect For Portions of Southeastern
Florida**

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

* CHANGES TO WATCHES AND WARNINGS:
    - A Tropical Storm Watch has been issued for Coastal Broward,
      Coastal Miami-Dade, Coastal Palm Beach, Inland Broward, Inland
      Palm Beach, Metro Broward, Metro Miami-Dade, and Metro Palm
      Beach

* CURRENT WATCHES AND WARNINGS:
    - A Tropical Storm Watch is in effect for Coastal Broward,
      Coastal Miami-Dade, Coastal Palm Beach, Inland Broward, Inland
      Palm Beach, Metro Broward, Metro Miami-Dade, and Metro Palm
      Beach

* STORM INFORMATION:
    - About 780 miles southeast of West Palm Beach FL or about 760
      miles southeast of Fort Lauderdale FL or about 750 miles
      east-southeast of Miami FL
    - 19.5N 70.6W
    - Storm Intensity 60 mph
    - Movement Northwest or 310 degrees at 20 mph

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

Tropical Storm Isaias is forecast to move across the northwest
Bahamas as a category 1 hurricane on Saturday. Based on the latest NHC
forecast, tropical storm force winds could reach as far west as the
immediate coastal areas of Palm Beach county and very close to coastal
Broward. However, forecast uncertainty remains high at this time, and
any notable change in the forecast could bring stronger winds farther
inland into the east coast counties of Southeast Florida and south
into Miami Dade. Therefore, a tropical storm watch watch has now been
put into effect for Southeast Florida.

A reasonable worst case scenario at this time is for portions of
southeastern Florida to be potentially impacted by high end tropical
storm force winds (winds greater than 58 mph). Although concerns for
hurricane conditions to impact portions of southeast florida cannot be
ruled out, the chances of that remain quite low at this time. It is
important to continue to monitor forecast trends with future
advisories.

Tropical storm force winds could start impacting portions of southeast
florida as early as late Friday Night/early Saturday but
conditions are most likely to occur sometime during the day and
evening hours on Saturday.

Other concerns with this system will be potential for locally heavy
rainfall, particularly across eastern portions of South florida where
there is a slight risk of excessive rainfall. High surf along with
minor coastal flooding are likely as the storm passes near or just
east of the coast. A stronger system and/or a track closer to the
coast could increase the threat of coastal flooding, so again
important to keep monitoring future forecasts. Marine conditions will
deteriorate late Friday night as the system approaches the region from
east to west across the local Atlantic waters with increasing winds
and building seas. Marine conditions are not likely to improve until
Sunday.

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

* WIND:
Prepare for dangerous wind having possible significant impacts across
portions of Palm Beach and Broward counties closer to the coast.
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, prepare for hazardous wind having possible limited impacts
across inland areas of Palm Beach and Broward counties, and across
Miami Dade.

Elsewhere across South Florida, little to no impact is anticipated
at this time.

* FLOODING RAIN:
Prepare for locally hazardous rainfall flooding having possible
limited impacts across the Southeast Florida metro areas. Potential
impacts include:
    - Localized rainfall flooding.
    - Flood waters can enter a few structures, especially in usually
      vulnerable spots. A few places where rapid ponding of water
      occurs at underpasses, low-lying spots, and poor drainage
      areas. Several storm drains and retention ponds become
      near-full and begin to overflow. Some brief road and bridge
      closures.

Elsewhere across South Florida, little to no impact is anticipated
at this time.

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

* EVACUATIONS:
Listen to local officials for recommended preparedness actions,
including possible evacuation. If ordered to evacuate, do so
immediately.

* OTHER PREPAREDNESS INFORMATION:
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.

Always heed the advice of local officials and comply with orders that
are issued. Do not needlessly jeopardize your life or the lives of
others.

Closely monitor weather.gov, NOAA Weather Radio and local news
outlets for official storm information. Listen for possible changes
to the forecast.

* 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 Miami FL around 11 PM EDT, or sooner if conditions warrant.

$$
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