[Tropical] Hurricane Local Statement

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Tropical Storm Isaias Local Statement Advisory Number 20
National Weather Service Jacksonville FL  AL092020
1126 PM EDT Sat Aug 1 2020

This product covers Northeast Florida and Southeast Georgia

**TROPICAL STORM ISAIAS FORECAST TO RE-STRENGTHEN TO A HURRICANE
 OVERNIGHT WHILE IT APPROACHES THE SOUTHEAST COAST OF FLORIDA**

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

* CHANGES TO WATCHES AND WARNINGS:
    - None

* CURRENT WATCHES AND WARNINGS:
    - A Tropical Storm Warning and Storm Surge Watch are in effect
      for Coastal Flagler and Coastal St. Johns
    - A Tropical Storm Warning is in effect for Clay, Inland Flagler,
      Inland St. Johns, and Putnam
    - A Tropical Storm Watch is in effect for Coastal Camden, Coastal
      Duval, Coastal Glynn, Coastal Nassau, Inland Camden, Inland
      Duval, Inland Glynn, and Inland Nassau

* STORM INFORMATION:
    - About 370 miles south-southeast of Jacksonville FL or about 300
      miles south-southeast of Flagler Beach FL
    - 25.5N 79.1W
    - Storm Intensity 70 mph
    - Movement Northwest or 310 degrees at 9 mph

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

Tropical storm Isaias continues on a northwest track, just west of the
central Bahamas this evening, and a northwesterly motion is forecast
to continue through tonight as the system approaches the southeast
Florida Atlantic coast. Isaias is expected to begin a more northward
turn late Sunday night, which will bring the tropical storm near the
northeast Florida Atlantic coast by early Monday morning. Due to the
close approach of Isaias to the northeast Florida coast, a Tropical
Storm Warning is in effect for all of Flagler and St. Johns Counties,
and for the area along the St. Johns River in Putnam and Clay Counties.
A Tropical Storm Watch is in effect northward for Duval, Nassau,
Camden and Glynn Counties. Tropical storm conditions may reach the
coast as early as Sunday Evening and then continue through Monday,
departing the area Monday night. Gusts to hurricane force are not out
of the question.

Isaias will also bring a threat of storm surge flooding with large
battering waves to the coast. Highest surge conditions are expected
along the St Johns and Flagler counties where values of 2 to 4 feet
are possible. Significant to severe beach erosion will be likely for
some of the area beaches. Coastal flooding from storm surge may begin
late Sunday and continue through late Monday evening.

Life-threatening rip currents and building rough seas are expected
through Monday and swimming is strongly discouraged at area beaches.
Rain bands with gusts near tropical storm force will be begin to
increase over the local Atlantic waters and portions of northeast
Florida Sunday, continuing to intensify Sunday night through Monday
morning. Rainfall amounts of 1 to 3 inches are expected, with localized
heavy rainfall in excess of 4 inches possible so urban and poor
drainage areas may experience localized flooding.

Over the coastal waters, dangerous marine conditions will continue
through Monday evening.

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

* WIND:
Prepare for dangerous wind having possible significant impacts across
St Johns and Flagler counties and the rest of coastal northeast Florida
and southeast Georgia. 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 Camden, Inland Glynn, inland Nassau, inland Duval, Clay,
and Putnam Counties

Elsewhere across Northeast Florida and Southeast Georgia, little to
no impact is anticipated.

* FLOODING RAIN:
Prepare for locally hazardous rainfall flooding having possible limited
impacts across coastal areas of northeast Florida and southeast
Georgia. 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.

Elsewhere across Northeast Florida and Southeast Georgia, little to
no impact is anticipated.

* SURGE:
Prepare for life-threatening surge having possible significant impacts
across coastal Flagler and coastal St. Johns Counties. 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.

Also, prepare for locally hazardous surge having possible limited
impacts across coastal southeast Georgia, coastal Nassau, coastal
Duval, and the St. Johns River Basin.

Elsewhere across Northeast Florida and Southeast Georgia, little to
no impact is anticipated.

* OTHER COASTAL HAZARDS:

Life-threatening rip currents are expected and swimming is strongly
discourage. High waves may knock persons down and sweep them into the
ocean. Beach erosion may be significant.

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.

If evacuating, leave with a destination in mind and allow extra time
to get there. Take your emergency supplies kit. Gas up your vehicle
ahead of time.

* 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.

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, plan to move to safe shelter.

When securing your property, outside preparations should be concluded
as soon as possible before conditions deteriorate. The onset of strong
gusty winds or flooding can cause certain preparedness activities to
become unsafe.

Be sure to let friends and family members know of your intentions for
weathering the storm and your whereabouts. Have someone located away
from the threatened area serve as your point of contact. Share vital
contact information with others. Keep cell phones handy and charged.

If you are a visitor, know the name of the county or parish in which
you are located and where it is relative to current watches and
warnings. If staying at a hotel, ask the management staff about their
onsite disaster plan. Listen for evacuation orders, especially
pertaining to area visitors.

* 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 Jacksonville FL around 530 AM, or sooner if conditions
warrant.

$$
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