[Tropical] Hurricane Local Statement

[EMWIN Server]

WTUS82 KMFL 012119
HLSMFL
FLZ063-066>075-168-172>174-020530-

Tropical Storm Isaias Local Statement Advisory Number 19
National Weather Service Miami FL  AL092020
519 PM EDT Sat Aug 1 2020

This product covers South Florida

**Isaias weakens to a tropical storm. Expected to re-strengthen
to a hurricane overnight while approaching the southeast Florida coast. **

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

* CHANGES TO WATCHES AND WARNINGS:
    - The Hurricane Watch has been cancelled for Coastal Broward and
      Inland Palm Beach
    - The Tropical Storm Watch has been cancelled for Far South
      Miami-Dade and Inland Miami-Dade

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

* STORM INFORMATION:
    - About 100 miles east-southeast of Miami FL
    - 25.1N 78.7W
    - Storm Intensity 70 mph
    - Movement Northwest or 310 degrees at 10 mph

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

Tropical Storm Isaias is forecast to move over the Straits of
Florida between Florida and the western Bahamas tonight, come close
to portions of the Southeast Florida coast during the pre-dawn and
early morning hours on Sunday, then move north of the area Sunday
afternoon. Despite Isaias being downgraded to a tropical storm this
afternoon, it is still expected to regain Category 1 hurricane force
overnight and early Sunday as it moves over the Gulf Stream waters
just off the coast.

Ahead of the storm, occasional showers and squalls will move onshore
the Southeast Florida coast through the night, producing periodic
tropical storm force winds mainly near and along the Atlantic coast,
as well the eastern half of Palm Beach County. In addition, damaging
hurricane force wind gusts are expected along portions of the Palm
Beach County coast from the pre-dawn hours through midday on Sunday
as the center of Isaias makes its closest approach to the coast.

Winds should gradually subside from south to north early Sunday
morning in Miami-Dade and Broward Counties through early Sunday
afternoon in Palm Beach County.

Other concerns with Isaias will be the potential for locally heavy
rainfall and urban flooding through Sunday, particularly across
eastern portions of South Florida and around Lake Okeechobee where
repeated rounds of rain bands may lead to rapid rainfall
accumulations. The greatest threat of flooding is tonight and the
first part of Sunday.

Isolated tornadoes are possible tonight and early Sunday, focused
over the Atlantic waters and the east coast metro areas.

High surf, dangerous rip currents, minor coastal flooding, and beach
erosion are expected, with the greatest impacts along the Palm Beach
coast where exposure to the strong onshore winds will be maximized.

Dangerous marine conditions will continue through most of Sunday,
then slowly improve beginning Sunday night.

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

* WIND:
Protect against life-threatening wind having possible extensive
impacts across across Palm Beach County. Potential impacts in
this area include:
    - Considerable roof damage to sturdy buildings, with some having
      window, door, and garage door failures leading to structural
      damage. Mobile homes severely damaged, with some destroyed.
      Damage accentuated by airborne projectiles. Locations may be
      uninhabitable for weeks.
    - Many large trees snapped or uprooted along with fences and
      roadway signs blown over.
    - Some roads impassable from large debris, and more within urban
      or heavily wooded places. Several bridges, causeways, and
      access routes impassable.
    - Large areas with power and communications outages.

Also, protect against dangerous wind having possible limited to
significant impacts across the remainder of southeast Florida,
particularly eastern Broward and Miami-Dade Counties.

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

* FLOODING RAIN:
Protect against locally hazardous rainfall flooding having possible
limited impacts across the Southeast Florida metropolitan areas and
Lake Okeechobee region. Potential
impacts include:
    - Localized rainfall flooding may prompt a few evacuations.
    - Ditches and canals may quickly rise with swift currents.
    - 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.

* SURGE:
Protect against locally hazardous surge having possible limited
impacts across coastal Palm Beach and Broward Counties. 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.

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

* TORNADOES:
Protect against a tornado event having possible limited impacts
across Southeast Florida. 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, 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.

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

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

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

For those not under evacuation orders, assess the risk from wind,
falling trees, and flooding at your location. If you decide to move,
relocate to a safer location nearby. If you do not relocate, help keep
roadways open for those under evacuation orders.

* 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.

If you are relocating to safe shelter, leave as early as possible.
Allow extra time to reach your destination. Many roads and bridges
will be closed once strong winds arrive. Check the latest weather
forecast before departing and drive with caution.

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.

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

$$
This weather bulletin was brought to you by:
www.nashvilleweather.net