[Tropical] Hurricane Local Statement

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Hurricane Lane Local Statement Advisory Number 36
National Weather Service Honolulu HI  EP142018
559 AM HST Thu Aug 23 2018

This product covers the Hawaiian islands

**LANE APPROACHING THE HAWAIIAN ISLANDS AS A MAJOR CATEGORY 4
HURRICANE**

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

* CHANGES TO WATCHES AND WARNINGS:
    - None

* CURRENT WATCHES AND WARNINGS:
    - A Hurricane Watch is in effect for Kauai Leeward, Kauai
      Mountains, Kauai Windward, and Niihau
    - A Hurricane Warning is in effect for Big Island Interior, Big
      Island North and East, Big Island Summits, Central Oahu,
      Haleakala Summit, Kahoolawe, Kohala, Kona, 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, South
      Big Island, Waianae Coast, Waianae Mountains, and Windward
      Haleakala

* STORM INFORMATION:
    - About 310 miles south of Honolulu or about 210 miles
      south-southwest of Kailua-Kona
    - 16.9N 157.4W
    - Storm Intensity 130 mph
    - Movement Northwest or 320 degrees at 7 mph

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

Hurricane Lane remains a major category 4 storm early this morning,
with maximum sustained winds of 130 mph. As of 5 AM, Hurricane Lane
was located around 210 miles south-southwest of Kailua-Kona, Hawaii
and 305 miles south of Honolulu, Hawaii. Lane is moving northwest at
around 7 mph. This general motion is expected to continue today with a
turn toward the north-northwest, followed by a turn toward the north
tonight through Friday with a decrease in forward speed. A turn back
toward the west is then expected Saturday and Sunday. The latest
forecast track from the Central Pacific Hurricane Center brings the
center of Lane dangerously close to the Hawaiian Islands during the
Thursday through Saturday time frame. Regardless of the exact track,
life threatening impacts are likely over many areas as this strong
hurricane makes its closest approach. All individuals in Hawaii are
urged not to focus on the exact forecast track or intensity of Lane,
and be prepared for adjustments in future forecast updates. Although
the official forecast does not explicitly indicate Lane's center
making landfall over any of the islands, this could still occur.

The onset of damaging tropical storm-force winds are expected to
develop across portions of the Big Island later this morning, with
dangerous hurricane force winds expected by tonight. In Maui County,
damaging tropical storm-force winds are expected late today or
tonight, with dangerous hurricane force winds expected in some areas
by Friday. On Oahu, damaging tropical storm force winds are expected
to develop late tonight, with dangerous hurricane force winds expected
Friday into Friday night. A Hurricane or Tropical Storm Warning may
needed for Kauai County as Lane draws closer.

Outer rain bands associated with Hurricane Lane are already affecting
the Big Island and Maui, with widespread heavy rainfall and flash
flooding ongoing over windward portions of the Big Island. The rain
bands will continue to spread from southeast to northwest across the
other islands today through Friday. Excessive rainfall is likely which
could result in life threatening flash flooding, as well as landslides
and mudslides. Flooding from these heavy rains will also be possible
in areas that are typically not prone to flooding. Storm total
rainfall amounts of 10 to 20 inches are expected to be common across
the island chain, with localized amounts in excess of 30 inches.

Swells generated by Lane will produce very large life-threatening surf
and dangerous rip currents along south, southeast and southwest facing
shores of all of the Hawaiian islands. Large surf is already occurring
along southeast facing shores of the Big Island. Surf is expected to
increase today along southwest facing shores of the Big Island as well
as along south and southeast facing shores from Maui County to Kauai
County, with the surf becoming extremely large tonight through
Saturday. Surf heights as large as 15 to 25 feet are expected along
the Kau and Puna coasts of the Big Island, 10 to 15 feet along the Kona
coast, and 12 to 20 feet along south and southeast facing coasts from
Kauai County to Maui County.

The combination of storm surge and large breaking waves is expected to
raise water levels well above normal tide levels as Hurricane Lane
makes its closest approach. Water levels could reach 2 to 4 feet above
normal along south and west facing shores from Kauai to Maui, as well
as southeast facing shores of the Big Island, with water levels as
high as 3 to 5 feet above normal along west facing shores of the Big
Island, provided that Lane makes landfall. This is expected to result
in significant beach erosion and overwash onto vulnerable coastal
roadways today through Saturday as Lane makes its closest approach,
particularly for vulnerable low-lying coastal areas during and around
the time of the normal high tide cycles.

Tornadoes and large waterspouts will be possible with Lane, mainly
along and to the right of the track of the hurricane.

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

* 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.

* WIND:
Protect against dangerous wind having possible significant impacts
across Maui County, Oahu, and western and southern sections
of the Big Island. 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, protect against hazardous wind having possible limited impacts
across the northern and eastern sections of the Big Island and Kauai.

* SURGE:
Protect against life-threatening surge having possible significant
impacts across southeast, south and southwest facing coastlines.
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.

Elsewhere across the Hawaiian islands, little to no surge impact is
expected at this time.

* TORNADOES:
Protect against a tornado event having possible limited impacts
across the Hawaiian islands. 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.

Do not enter evacuated areas until officials have given the all clear
to return.


* 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.

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

Storm surge is the leading killer associated with tropical storms and
hurricanes! Make sure you are in a safe area away from the surge
zone. Even if you are not in a surge-prone area, you could find
yourself cutoff by flood waters during and after the storm. Heed
evacuation orders issued by the 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 a Tornado Warning is issued for your area, be ready to shelter
quickly, preferably away from windows and in an interior room not
prone to flooding. If driving, scan the roadside for quick shelter
options.

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.

* 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 12 PM HST, or sooner if conditions
warrant.

$$
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