[Tropical] Hurricane Local Statement

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Hurricane Lane Local Statement Advisory Number 40
National Weather Service Honolulu HI  EP142018
548 AM HST Fri Aug 24 2018

This product covers the Hawaiian islands

**DANGEROUS HURRICANE LANE MOVING SLOWLY NORTH TOWARD THE MAIN HAWAIIAN
 ISLANDS**

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 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 Tropical Storm 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 180 miles south of Honolulu or about 150 miles
      west-southwest of Kailua-Kona
    - 18.7N 158.0W
    - Storm Intensity 110 mph
    - Movement North or 360 degrees at 5 mph

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

Hurricane Lane is a category 2 storm this morning, with maximum
sustained winds of 110 mph. As of 5 AM HST, Hurricane Lane was located
180 miles south of Honolulu and around 145 miles west-southwest of
Kailua-Kona. Lane is moving slowly toward the north at 6 mph.

A slow northward motion is expected to continue today. A turn toward
the west is anticipated on Saturday, with an increase in forward speed.
On the latest forecast track, the center of Lane will move dangerously
close to portions of the central Hawaiian islands later today and
tonight.

Regardless of the hurricane track, life-threatening impacts will
extend far beyond the center position as Lane approaches the islands.
Do not focus on the exact forecast track or intensity of Lane. The
close proximity of this hurricane track to the main Hawaiian Islands
and the forecast timing of Lane's turn to the west remains challenging.
Be prepared for changes in future forecasts as Lane approaches the
islands from the south. Although the official forecast does not
explicitly indicate Lane's center making landfall over any of the
islands, impacts from a land falling hurricane may still occur.

Tropical storm conditions are already occurring on the Big Island,
Maui County and Oahu. These conditions will likely persist today.
Hurricane conditions are expected over some areas of Maui County and
Oahu starting later today and continuing through tonight. Hurricane
conditions are expected over some areas of Maui County and Oahu
starting tonight. Tropical storm or hurricane conditions are possible
on Kauai starting tonight or Saturday.

Rain bands will continue to overspread the Hawaiian Islands well ahead
of Lane. Excessive rainfall associated with this slow moving hurricane
will continue to impact the Hawaiian Islands into the weekend, leading
to catastrophic and life-threatening flash flooding and landslides.
Lane is expected to produce total rainfall accumulations of 10 to 20
inches, with localized amounts up to 40 inches possible. Over 30
inches of rain have already fallen at a couple locations on the
windward side of the Big Island over the past 36 hours.

Swells generated by Lane will produce life-threatening surf and
dangerous rip currents along exposed shores of all Hawaiian Islands. A
prolonged period of high surf will likely lead to significant coastal
erosion. Surf is expected to continue to increase through the day today
with the peak tonight as Lane passes near the smaller islands. Surf
heights for the Big Island are forecast from 10 to 15 feet along the
southwest facing shores, with 6 to 10 feet for east facing shores. Surf
heights for Maui County, Oahu and Kauai County will rise 15 to 25 feet
by this afternoon.

The combination of storm surge and large breaking waves are expected
to raise water levels well above normal tide levels as Hurricane Lane
makes its closest approach. Overwash onto vulnerable coastal roadways
will be possible through Saturday, especially around the afternoon high
tide cycles. Water levels will rise 2 to 4 feet above normal along
south and west facing shores near the center of Lane.

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 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 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 NOON HST, or sooner if conditions
warrant.

$$
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