[Tropical] Hurricane Local Statement
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Sun Sep 10 22:23:32 CDT 2017
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Hurricane Irma Local Statement Advisory Number 48
National Weather Service Miami FL AL112017
1122 PM EDT Sun Sep 10 2017
This product covers SOUTH FLORIDA
**HURRICANE IRMA SLOWLY DEPARTING SOUTH FLORIDA**
NEW INFORMATION
---------------
* CHANGES TO WATCHES AND WARNINGS:
- A Tropical Storm Warning has been issued and the Hurricane
Warning has been cancelled for Coastal Broward, Coastal
Collier, Coastal Miami-Dade, Coastal Palm Beach, Far South
Miami-Dade, Glades, Hendry, Inland Broward, Inland Collier,
Inland Miami-Dade, Inland Palm Beach, Mainland Monroe, Metro
Broward, Metro Miami-Dade, and Metro Palm Beach
* CURRENT WATCHES AND WARNINGS:
- A Storm Surge Warning and Tropical Storm Warning are in effect
for Coastal Collier, Coastal Miami-Dade, Far South Miami-Dade,
Inland Collier, Inland Miami-Dade, and Mainland Monroe
- A Tropical Storm Warning is in effect for Coastal Broward,
Coastal Palm Beach, Glades, Hendry, Inland Broward, Inland Palm
Beach, Metro Broward, Metro Miami-Dade, and Metro Palm Beach
* STORM INFORMATION:
- About 160 miles northwest of Miami FL or about 90 miles north
of Naples FL
- 27.5N 81.9W
- Storm Intensity 100 mph
- Movement North or 350 degrees at 14 mph
SITUATION OVERVIEW
------------------
Hurricane Irma is beginning to move faster northward across Central
Florida. Tropical Storm force winds are still expected to continue
overnight, with hurricane conditions over Lake Okeechobee.
Significant storm surge threat (3 to 6 feet) remains along the Gulf
coast, including the Naples area. Flooding rain is still possible
overnight if any rain bands develop over the region.
Interests in South Florida need to continue remaining vigilant and not
let their guard down as the storm passes. Additional wind damage and
flooding are still possible. Stay away from evacuated area and off the
roads until it is safe to move around.
POTENTIAL IMPACTS
-----------------
* WIND:
Potential impacts from the main wind event are still unfolding across
South Florida. Remain well sheltered from dangerous wind having
additional significant impacts. If realized, these impacts 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.
* SURGE:
Potential impacts from the main surge event are now unfolding along
the Gulf coast. Remain well away from life-threatening surge having
additional significant impacts. If realized, these impacts 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.
Potential impacts from the main surge event are also now unfolding
across the Miami-Dade county coast. Remain well away from locally
hazardous surge having additional limited impacts.
* FLOODING RAIN:
Potential impacts from the flooding rain are still unfolding across
South Florida. Remain well guarded against dangerous flood waters
having additional significant impacts. If realized, these impacts
include:
- Moderate rainfall flooding may prompt several evacuations and
rescues.
- Ditches and canals may quickly become swollen with swift
currents and overspill their banks in a few places, especially
in usually vulnerable spots.
- 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.
* TORNADOES:
Potential impacts from tornadoes are still unfolding across the Atlantic
coast of South Florida. Remain well braced against a tornado event
having limited impacts. If realized, these 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.
PRECAUTIONARY/PREPAREDNESS ACTIONS
----------------------------------
* EVACUATIONS:
Do not return to evacuated areas until hazardous winds diminish
and flood waters abate.
* OTHER PREPAREDNESS INFORMATION:
Continue to keep your cell phone well charged for as long as
possible. If you lose power, use it more sparingly and mainly for
personal emergencies and check-ins. Do not overload communications
systems with idle chatter.
* 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 6 AM EDT, or sooner if conditions warrant.
$$
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