[Tropical] Hurricane Local Statement

EMWIN Server emwin at nashvilleweather.net
Tue Aug 21 22:53:16 CDT 2018


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Hurricane Lane Local Statement Advisory Number 29
National Weather Service Honolulu HI  EP142018
553 PM HST Tue Aug 21 2018

This product covers the Hawaiian islands

**DANGEROUS HURRICANE LANE EXPECTED TO TURN TOWARD THE NORTHWEST
ON A TRACK THAT WILL TAKE THE STORM VERY CLOSE TO HAWAII STARTING
THURSDAY**

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

* CHANGES TO WATCHES AND WARNINGS:
    - A Hurricane Watch has been issued for Central Oahu, Oahu
      Koolau, Oahu North Shore, Oahu South Shore, Olomana, Waianae
      Coast, and Waianae Mountains
    - The Hurricane Watch has been upgraded to a Hurricane Warning
      for Big Island Interior, Big Island North and East, Big Island
      Summits, Kohala, Kona, and South Big Island

* CURRENT WATCHES AND WARNINGS:
    - A Hurricane Watch is in effect for Central Oahu, Haleakala
      Summit, Kahoolawe, Lanai Makai, Lanai Mauka, Leeward Haleakala,
      Maui Central Valley, Maui Leeward West, Maui Windward West,
      Molokai Leeward, Molokai Windward, Oahu Koolau, Oahu North
      Shore, Oahu South Shore, Olomana, Waianae Coast, Waianae
      Mountains, and Windward Haleakala
    - A Hurricane Warning is in effect for Big Island Interior, Big
      Island North and East, Big Island Summits, Kohala, Kona, and
      South Big Island

* STORM INFORMATION:
    - About 540 miles south-southeast of Honolulu or about 370 miles
      south of Hilo
    - 14.5N 154.0W
    - Storm Intensity 155 mph
    - Movement West-northwest or 285 degrees at 9 mph

SITUATION OVERVIEW
------------------
Powerful Hurricane Lane, located about 325 miles to the south-
southeast of South Point on the Big Island at 5 pm HST, has been on a
west-northwest track during the day today. Lane is expected
to turn toward the northwest on Wednesday, followed by a turn toward
the north-northwest on Thursday. On this forecast track, the center of
Lane will move dangerously close to or over the main Hawaiian Islands
from Thursday through Saturday. Although some weakening is expected the
next couple of days, Lane is forecast to remain a dangerous hurricane
as it draws closer to the Hawaiian Islands.

The onset of damaging tropical storm force winds on the Big Island
could be as early as Wednesday evening, with dangerous hurricane force
winds possible by Thursday.

On Maui County, damaging tropical storm force winds could begin as
early as Wednesday night, with dangerous hurricane force winds possible
starting late Thursday.

On Oahu, damaging tropical storm force winds could begin as early as
Thursday, with dangerous hurricane force winds possible starting late
Thursday night.

Rainbands and thunderstorms surrounding Lane will begin to overspread
the state from south to north, reaching the Big Island late tonight or
Wednesday morning. Torrential rainfall is possible as squalls increase
when Lane makes its closest approach, which could lead to major flash
flooding, landslides and mudslides. Flooding can occur even in areas
not usually prone to flooding. Storm total rainfall amounts greater
than 20 inches are possible.

Swell generated by Lane will bring very large and rough surf and
dangerous rip currents for south and southeast facing shores. Surf
heights of 15 to 25 feet could lead to ocean water surging and sweeping
over beaches, coastal benches, lava flows, and roadways, creating the
potential for significant damage to coastal properties and
infrastructure, including roadways. Coastal evacuations and road
closures are possible. Large breaking waves may affect harbor entrances
and channels with damage possible to docks, piers, ramps,
and boats.

Tornadoes and large waterspouts will be possible as Lane approaches
the islands, mainly along and to the right of the track of the
hurricane on Thursday and Friday.


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

* WIND:
Protect against life-threatening wind having possible extensive
impacts across Maui County, Oahu, and western and southern portions of the Big Island.
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 significant
impacts across the remainder of the Big Island and Kauai.

* FLOODING RAIN:
Protect against life-threatening rainfall flooding having possible
devastating impacts across the Hawaiian islands. Potential impacts
include:
    - Extreme rainfall flooding may prompt numerous evacuations and
      rescues.
    - Rivers and tributaries may overwhelmingly overflow their banks
      in many places with deep moving water. Small streams, creeks,
      canals, arroyos, and ditches may become raging rivers. In
      mountain areas, deadly runoff may rage down valleys while
      increasing susceptibility to rockslides and mudslides. Flood
      control systems and barriers may become stressed.
    - Flood waters can enter numerous structures within multiple
      communities, some structures becoming uninhabitable or washed
      away. Numerous places where flood waters may cover escape
      routes. Streets and parking lots become rivers of raging water
      with underpasses submerged. Driving conditions become very
      dangerous. Numerous road and bridge closures with some weakened
      or washed out.

* TORNADOES:
Protect against a tornado event having possible limited impacts
across Oahu, Maui County, and the Big Island starting on Thursday.
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.

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.

Let others know where you are going prior to departure. Secure loose
items and pets in the car, and avoid distracted driving.

If evacuating, follow designated evacuation routes. Seek traffic
information on roadway signs, the radio, and from official sources.

* OTHER PREPAREDNESS INFORMATION:
Now is the time to complete all preparations to protect life and
property in accordance with your emergency plan. Ensure you are in a
safe location before the onset of strong winds or possible flooding.

If you are relocating to safe shelter, leave as early as possible.
Allow extra time to reach your destination. Many roads and bridges
will be closed once strong winds arrive. Check the latest weather
forecast before departing and drive with caution.

If heading to a community shelter, become familiar with the shelter
rules before arrival, especially if you have special needs or have
pets. Take essential items with you from your Emergency Supplies Kit.

Failure to adequately shelter may result in serious injury or loss of
life. Always heed the advice of local officials and comply with any
orders that are issued. Remember, during the storm 9 1 1 Emergency
Services may not be able to immediately respond if conditions are
unsafe. This should be a big factor in your decision making.

Keep cell phones well charged. Cell phone chargers for automobiles
can be helpful, but be aware of your risk for deadly carbon monoxide
poisoning if your car is left idling in a garage or other poorly
ventilated area.

It is important to remain calm, informed, and focused during an
emergency. Be patient and helpful with those you encounter.

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 island or county on which
it resides. Listen for these locations in local news updates. Pay
attention for instructions from local authorities.

Rapidly rising flood waters are deadly. If you are in a flood-prone
area, consider moving to higher ground. Never drive through a flooded
roadway. Remember, turn around don't drown!

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, consider moving to a safer shelter before the onset of
strong winds or flooding.

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, even if the power goes out.

* 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 Honolulu HI around midnight HST, or sooner if conditions
warrant.

$$
R Ballard
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