[Tropical] Hurricane Local Statement

Sun Aug 2 04:35:33 CDT 2020

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Tropical Storm Isaias Local Statement Advisory Number 21
National Weather Service Jacksonville FL  AL092020
535 AM EDT Sun Aug 2 2020

This product covers Northeast Florida and Southeast Georgia

**TROPICAL STORM ISAIAS APPROACHING THE EAST 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, Coastal Camden,
      Coastal Duval, Coastal Glynn, Coastal Nassau, Inland Duval,
      Inland Flagler, Inland St. Johns, and Putnam

* STORM INFORMATION:
    - About 310 miles south-southeast of Jacksonville FL or about 240
      miles south-southeast of Flagler Beach FL
    - 26.3N 79.5W
    - Storm Intensity 65 mph
    - Movement Northwest or 325 degrees at 9 mph

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

Tropical Storm Isaias, located off the southeast Florida coast, will
continue on a northwest track today, and a northwesterly motion is
forecast to continue through today as the system approaches the
southeast Florida Atlantic coast. Isaias is expected to begin a more
northward turn tonight, 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 the coastal areas of northeast FL
and southeast GA. Tropical storm conditions are expected to begin
late tonight and early Monday for areas in the tropical storm warning
and for coastal southeast Georgia beginning Monday morning and
early afternoon. The tropical storm is expected to shift away from the
area by Monday evening resulting in winds subsiding.

Isaias could 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. Minor coastal flooding will be possible for coastal areas of
north of Ponte Vedra through St Simons Island. Significant beach
erosion will be likely for some of the area beaches. Coastal flooding
from storm surge may begin late tonight 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 later today, continuing to intensify tonight through Monday
afternoon. Rainfall amounts of up to 2 to 4 inches, with localized
heavy rainfall close to 6 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
coastal areas from Flagler Beach FL to Altamaha Sound GA. 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 impacts across Inland Camden, Inland Glynn, inland Nassau,
inland Clay, and inland Putnam Counties.

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

* FLOODING RAIN:
Prepare for dangerous rainfall flooding having possible significant
impacts across coastal areas of northeast Florida and southeast
Georgia. Potential impacts include:
    - Moderate rainfall flooding may prompt several evacuations and
      rescues.
    - Rivers and tributaries may quickly become swollen with swifter
      currents and overspill their banks in a few places, especially
      in usually vulnerable spots. Small streams, creeks, canals, and
      ditches overflow.
    - Flood waters can enter some structures or weaken foundations.
      Several places may experience expanded areas of rapid
      inundation at underpasses, low-lying spots, and poor drainage
      areas. Some streets and parking lots take on moving water as
      storm drains and retention ponds overflow. Driving conditions
      become hazardous. Some road and bridge closures.

Prepare for locally hazardous rainfall flooding having possible
limited impacts across inland areas from Putnam county northward
through Western Nassau and inland Camden and Glynn counties.

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 in the St Johns River Basin and along the coast north of Ponte
Vedra Beach FL to St Simons Island GA.

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 in some areas.

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.

NEXT UPDATE
-----------

The next local statement will be issued by the National Weather
Service in Jacksonville FL around 1130 AM, or sooner if conditions
warrant.

$$
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