[Tropical] Hurricane Local Statement

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Hurricane Lane Local Statement Special Advisory Number 42
National Weather Service Honolulu HI  EP142018
243 PM HST Fri Aug 24 2018

This product covers the Hawaiian islands

**LANE WEAKENING QUICKLY JUST SOUTH OF HAWAII BUT FLOODING RAINFALL
AND STRONG GUSTY WINDS REMAIN A THREAT**

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

* CHANGES TO WATCHES AND WARNINGS:
    - None

* CURRENT WATCHES AND WARNINGS:
    - A Tropical Storm 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 120 miles south of Honolulu, Hawaii
      About 115 miles west of Kailua-Kona, Hawaii
    - 19.6N 157.8W
    - Storm Intensity 85 mph
    - Movement North-northeast or 25 degrees at 2 mph

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

Hurricane Lane is a category 1 storm this afternoon, with maximum
sustained winds of 85 mph.

As of 2 PM HST, Hurricane Lane was located 120 miles south of
Honolulu, Hawaii. Lane is moving north-northeast at 2 mph.

A slow northerly motion is expected to continue through the rest of
this afternoon and tonight. 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 over, or dangerously
close to portions of the main Hawaiian islands tonight and Saturday.

Regardless of the hurricane track, life threatening impacts will
extend far beyond the center position as this hurricane 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, there is still an outside chance that it
could.

Tropical storm conditions remains in place on the Big Island, Maui
County, and Oahu, and is likely to persist through tonight. Hurricane
conditions are expected over some areas of Maui County and Oahu
starting tonight. Tropical storm conditions are possible on Kauai
starting late tonight or Saturday.

A slow moving rain band associated with Hurricane Lane continues to
affect mainly the eastern half of the island chain at mid-afternoon.
It is likely the band will remain over the islands into the nighttime
hours. Heavy rains and flash flooding are still ongoing over the
north and east parts of the Big Island. Although, rainfall has been
rather light on Molokai, Oahu and Kauai, heavy showers could develop
at any moment.

The potential for excessive rainfall is high, which could lead to life
threatening flash flooding, as well as land and mudslides. Flooding
will be possible in areas that are typically not prone to flooding.
Lane is still capable in produce rain accumulations of 10 to 20 inches,
with localized amounts of 30 to 40 inches. Over two feet of rain has
already fallen at a few locations on the windward side of the Big
Island.

Swells generated by Lane will produce very large and life- threatening
surf and dangerous rip currents along exposed west and south facing
shores of all Hawaiian Islands. A prolonged period of high surf will
likely lead to significant coastal erosion. Elevated surf is expected
to continue through tonight and into Saturday.

A High Surf Warning is in effect through tonight for the west facing
shores of the Big Island and south facing shores of the remaining
islands. Expect surf between 10 to 15 feet along the Kona coast, and
15 to 25 feet along the south facing shores.

A High Surf Advisory is effect for the east facing shores of all
islands at 6 to 10 feet through Saturday.

The combination of storm surge and large breaking waves is expected to
raise water levels above normal tide levels. This is expected to result
in beach erosion and  overwash onto vulnerable coastal roadways through
Saturday, particularly for vulnerable low-lying coastal areas during
and around the time of normal high tide cycles. If Hurricane Lane makes
landfall, water levels will rise from 2 to 4 feet above normal along
south and west facing shores near the center of Lane. The surge will be
accompanied by large waves.

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

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

* WIND:
Potential impacts from the main wind event are now unfolding across
the entire state of Hawaii. Remain well sheltered from dangerous
wind having possible significant impacts. 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 across
across southeast, south, and southwest facing coastlines.
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.

Elsewhere across the Hawaiian islands, little to no impact is
anticipated.

* FLOODING RAIN:
Protect against life-threatening rainfall flooding having possible
devastating impacts across the Hawaiian islands.
These 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 the Hawaiian islands.
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, 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 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.

During the peak of the storm be ready to move quickly. Keep your
shoes on and rain gear handy. Boots and athletic shoes offer the best
foot protection if you become unexpectedly exposed to the weather.

Keep your cell phone charged and in power-saving mode. If you lose
power, use it sparingly and mainly for personal emergencies and
check-ins.

Do not venture outside while in the eye of a hurricane as any
improvement in weather will only be temporary. Once the eye passes,
conditions will become life threatening as winds immediately return
to dangerous speeds, so remain safely sheltered from the storm.

Do not be a thrill seeker or risk your life for senseless photos or
videos.

Quickly move to the safest place within your shelter if it begins to
fail, preferably an interior room on the lowest floor as long as
flooding is not a concern.

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 Honolulu HI around 6 pm HST, or sooner if conditions
warrant.

$$
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