[Tropical] Hurricane Local Statement

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Tropical Storm Isaias Local Statement Advisory Number 20
National Weather Service Melbourne FL  AL092020
1121 PM EDT Sat Aug 1 2020

This product covers East Central Florida

**ISAIAS CONTINUES TO SLOWLY APPROACH THE SOUTHEAST FLORIDA COAST**


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

* CHANGES TO WATCHES AND WARNINGS:
    - None

* CURRENT WATCHES AND WARNINGS:
    - A Hurricane Warning and Storm Surge Watch are in effect for
      Coastal Volusia, Indian River, Martin, Northern Brevard,
      Southern Brevard, and St. Lucie
    - A Tropical Storm Warning is in effect for Inland Volusia,
      Okeechobee, Orange, Osceola, and Seminole

* STORM INFORMATION:
    - About 220 miles south-southeast of Cape Canaveral FL or about
      130 miles south-southeast of Stuart FL
    - 25.5N 79.1W
    - Storm Intensity 70 mph
    - Movement Northwest or 310 degrees at 9 mph


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

A Hurricane Warning continues for all coastal counties of east
central Florida. A Tropical Storm Warning remains in effect for
Okeechobee, Osceola, Orange, Seminole and inland Volusia Counties.

Tropical Storm Isaias, currently located about 80 miles ESE of Fort
Lauderdale, is forecast to move northwest to north-northwest between
the southeast Florida coast and Grand Bahama Island tonight through
sunrise on Sunday, while re-strengthening back to a category one
hurricane.

Based on the latest forecast, Isaias is expected to be a category one
hurricane as it moves north-northwest, parallel and very close to the
east central Florida coast, weakening once again to a tropical storm
as it nears Cape Canaveral. However, slight fluctuations of track and
intensity may still occur and hurricane conditions are still possible
along the coast, especially for the barrier islands. The center of
Isaias is expected to make its closest point of approach to the
Treasure Coast counties of Martin, Saint Lucie, and Indian River
Sunday from 10 AM through 6 PM, the Brevard County coast from 6 PM
Sunday through 2 AM Monday, then just offshore the Volusia County
coast early Monday morning between 2 AM and sunrise.

Tropical storm conditions will begin to reach coastal Martin County a
little after midnight, then gradually spread northward across the
Treasure and Space coasts during the morning, and coastal Volusia
County by early afternoon. Hurricane conditions are still possible
along the immediate coast, starting around mid morning in Martin
County and spreading north along the Treasure Coast counties through
late Sunday afternoon. These conditions will spread north along the
Brevard County coast from around 5 PM Sunday through around midnight.
Coastal Volusia County will experience strong tropical storm to near
hurricane conditions from a little after midnight through sunrise
Monday

Rain bands with gusty squalls from Isaias currently impacting the
Treasure Coast and Lake Okeechobee regions will increase and intensify
while spreading northward tonight into Sunday night. Wind gusts of
40 to 50 mph will occur in some of the squalls along the coast this
evening and will increase up to as high 70 to 80 mph as Isaias makes
its closest approach. Farther inland, gusts could reach as high as
50 to 60 mph in squalls.

Total rainfall amounts are expected to reach 3 to 5 inches along the
coastal counties, decreasing to between 1 and 3 inches across the
interior. Heavy rainfall is likely to cause flooding of urban and
other poorly drained and low-lying areas. This is especially the case
in Indian River, Saint Lucie and Martin Counties, where the late
spring and summer were quite wet.

A Storm Surge Watch remains in effect along the east central Florida
coast. There is the potential for life threatening storm surge along
portions of the immediate coast that are typically vulnerable to
elevated ocean levels or where dune erosion has occurred. Low land
flooding is also possible along the intracoastal waterways and in
vulnerable low lands near inlets and other low areas near the coast.

Long period swells from Isaias will will maintain a high risk for
numerous strong rip currents through at least Sunday. Seas will build
to dangerous levels of 20 feet or higher, with large breaking waves in
excess of 7 feet. Engaging in any sort of boating or beach activity
will be extremely dangerous, so stay away from the ocean and surf
zone! Coupled with increasing astronomical high tides due to the
approaching full moon, moderate to locally significant beach erosion
will be likely during the next several high tide cycles. The next two
high tide cycles on Sunday will be around 730 AM and again around
800 PM.

Your personal hurricane safety plan for yourself and family should
have been put into action. Continue to follow recommendations of your
county emergency management officials, as well as the latest
forecasts, statements and warnings from both the National Hurricane
Center, and your National Weather Service office in Melbourne.


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

* WIND:
Protect against life-threatening wind having possible extensive
impacts across all coastal counties of east central Florida.

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  Okeechobee, Osceola, Orange, Seminole
and inland Volusia Counties.

* FLOODING RAIN:
Protect against locally hazardous rainfall flooding having possible
limited impacts across East Central Florida.

Potential impacts include:
    - Localized rainfall flooding may prompt a few evacuations.
    - Rivers and tributaries may quickly rise with swifter currents.
      Small streams, creeks, canals, and ditches may become swollen
      and overflow in spots.
    - 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.

* SURGE:
Protect against life-threatening surge having possible significant
impacts along the east central Florida coast.

Potential impacts in this area include:
    - Areas of inundation with storm surge flooding accentuated by
      waves. Damage to several buildings, mainly near the coast.
    - Sections of near-shore escape routes and secondary roads become
      weakened or washed out, especially in usually vulnerable low
      spots.
    - Major beach erosion with heavy surf breaching dunes. Strong and
      numerous rip currents.
    - Moderate damage to marinas, docks, boardwalks, and piers.
      Several small craft broken away from moorings, especially in
      unprotected anchorages.

Elsewhere across East Central Florida, little to no impact is
anticipated.

* TORNADOES:
Protect against a tornado event having possible limited impacts
across coastal areas of Martin, Saint Lucie, Indian River, and
Brevard Counties.

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.

Elsewhere across East Central Florida, little to no impact is
anticipated.


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

* OTHER PREPAREDNESS INFORMATION:
Preparations to protect life and property in accordance with your
emergency plan should be rushed to completion. Ensure you are in a
safe location before the onset of strong winds or possible flooding.

If you are a visitor, be sure to know the name of the city or town in
which you are staying and the name of the county or parish in which
it resides. Listen for these locations in local news updates. Pay
attention for instructions from local authorities.

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 Melbourne FL around 600 AM EDT, or sooner if conditions
warrant.

$$

Cristaldi
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