[Tropical] Hurricane Local Statement

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Hurricane Ian Local Statement Advisory Number 20
National Weather Service Miami FL  AL092022
1121 PM EDT Tue Sep 27 2022

This product covers South Florida

**MAJOR HURRICANE IAN TO BRING SIGNIFICANT IMPACTS TO SOUTH FLORIDA**

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

* CHANGES TO WATCHES AND WARNINGS:
    - The Hurricane Watch and Tropical Storm Warning have been
      upgraded to a Hurricane Warning for Glades, Hendry, and Inland
      Collier

* CURRENT WATCHES AND WARNINGS:
    - A Hurricane Warning is in effect for Glades, Hendry, and Inland
      Collier
    - A Storm Surge Warning and Hurricane Warning are in effect for
      Coastal Collier
    - A Storm Surge Warning and Tropical Storm Warning are in effect
      for Mainland Monroe
    - A Tropical Storm Warning and Storm Surge Watch are in effect
      for Far South Miami-Dade
    - A Tropical Storm Warning is in effect for Coastal Broward,
      Coastal Miami-Dade, Coastal Palm Beach, Inland Broward, Inland
      Miami-Dade, Inland Palm Beach, Metro Broward, Metro Miami-Dade,
      and Metro Palm Beach

* STORM INFORMATION:
    - About 110 miles southwest of Naples FL or about 100 miles
      southwest of Marco Island FL
    - 24.9N 82.9W
    - Storm Intensity 120 mph
    - Movement North-northeast or 15 degrees at 10 mph

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

Hurricane Ian is currently moving through the Florida Straits and
is forecast to continue to strengthen as the system approaches the
southwest coast of Florida. Regardless of exact landfall location,
hazardous conditions will extend well away from the center of the
system. The following hazardous conditions can be expected for South
Florida:

* Peak storm surge values of 6 to 10 feet are expected particularly in
  surge prone areas between Bonita Beach to Chokoloskee. Peak storm
  surge values of 4 to 7 feet are the main concern from Chokoloskee to
  East Cape Sable and 2 to 4 feet from East Cape Sable to Card Sound
  Road along Florida Bay. The storm surge concern will begin overnight
  with peak values occurring Wednesday. Due to slow motion of the
  system, surge will be slow to subside and may impact the region
  through late week. This could lead to significant and life-
  threatening storm surge flooding particularly along coastal Collier
  County.

* Multiple rounds of heavy rainfall associated with rainbands may lead
to flooding across all of South Florida. Rainfall totals may range
4 to 8 inches through Thursday with locally higher totals possible.
Flash-flooding will be possible in this environment.

* Tornadoes embedded in showers and thunderstorms within the outer
rainbands associated with the system have been observed today and
through the night hours, and the threat may persist through Wednesday.

* Hazardous marine and beach conditions are expected. Dangerous surf
conditions are expected along the Gulf coast.

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

* WIND:
Protect against dangerous wind having possible extensive impacts
across portions of Southwest Florida and around and west of Lake
Okeechobee. 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 hazardous wind having possible significant
impacts across portions of Palm Beach County. Elsewhere across South
Florida limited impacts are possible mostly associated with the
possibility of seeing gusts to tropical storm force..

* SURGE:
Potential impacts from the main surge event are now unfolding across
the southwest Florida coastline. Remain well away from life-threatening
surge having potentially devastating impacts. If
realized, these impacts include:
    - Widespread deep inundation, with storm surge flooding greatly
      accentuated by powerful battering waves. Structural damage to
      buildings, with many washing away. Damage greatly compounded
      from considerable floating debris. Locations may be
      uninhabitable for an extended period.
    - Near-shore escape routes and secondary roads washed out or
      severely flooded. Flood control systems and barriers may become
      stressed.
    - Extreme beach erosion. New shoreline cuts possible.
    - Massive damage to marinas, docks, boardwalks, and piers.
      Numerous small craft broken away from moorings with many lifted
      onshore and stranded.

Potential impacts from the main surge event are also now unfolding
across portions of coastal Mainland Monroe County. Remain well away
from life- threatening surge having possible significant to extensive
impacts.

Potential impacts from the main surge event are also now unfolding
across coastal portions of Florida Bay and extreme southern Miami-Dade
County. Remain well away from locally hazardous surge having possible limited
impacts.

Minor coastal flooding may be observed across portions of the east
coast.

* FLOODING RAIN:
Protect against life-threatening rainfall flooding having possible
extensive impacts across South Florida. Potential impacts include:
    - Major rainfall flooding may prompt many evacuations and rescues.
    - Ditches and canals may rapidly overflow their banks in multiple
      places. Flood control systems and barriers may become stressed.
    - Flood waters can enter many structures within multiple
      communities, some structures becoming uninhabitable or washed
      away. Many places where flood waters may cover escape routes.
      Streets, parking lots and underpasses become submerged. Driving
      conditions become dangerous. Many road and bridge closures with
      some weakened or washed out.

* TORNADOES:
Protect against a dangerous tornado event having possible significant
impacts across South Florida. Potential impacts include:
    - The occurrence of scattered tornadoes can hinder the execution
      of emergency plans during tropical events.
    - Several places may experience tornado damage with a few spots
      of considerable damage, power loss, and communications failures.
    - Locations could realize roofs torn off frame houses, mobile
      homes demolished, boxcars overturned, large trees snapped or
      uprooted, vehicles tumbled, and small boats tossed about.
      Dangerous projectiles can add to the toll.

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

* EVACUATIONS:

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

*OTHER PREPAREDNESS INFORMATION:

Now is the time to stay inside and away from windows. Listen for
updates and be ready in case you lose electrical power. Keep a battery-
powered radio, charged cell phone and flashlight handy.

If you are prone to flooding or in an area under a storm surge watch
or warning, be prepared for the possibility of a quick and dramatic
rise in water levels.

If a tornado warning is issued for your area, quickly move to the
safest place within your shelter. Protect your head and body.

* 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 5 AM EDT, or sooner if conditions warrant.

$$
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