[Tropical] Hurricane Local Statement

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Tropical Storm Lane Local Statement Advisory Number 43
National Weather Service Honolulu HI  EP142018
523 PM HST Fri Aug 24 2018

This product covers the Hawaiian islands

**LANE WEAKENS TO A TROPICAL STORM SOUTH OF OAHU BUT RAIN BANDS WILL
STILL BRING MORE FLOODING AND DAMAGING WINDS TO PARTS OF THE MAIN
HAWAIIAN ISLANDS**

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

* CHANGES TO WATCHES AND WARNINGS:
    - The Hurricane Warning has been cancelled and a Tropical Storm
      Warning has been issued 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

* CURRENT WATCHES AND WARNINGS:
    - A Tropical Storm Watch is in effect for Kauai Leeward, Kauai
      Mountains, Kauai Windward, and Niihau
    - A Tropical Storm 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 150 miles south-southwest of Honolulu
    - 19.2N 158.4W
    - Storm Intensity 70 mph
    - Movement Northwest or 315 degrees at 3 mph

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

Lane is now a Tropical Storm, with maximum sustained winds of 70 mph.

As of 5 PM HST, Tropical Storm Lane was located 150 miles south of
Honolulu, Hawaii, and 160 miles west of Kailua-Kona, Hawaii, and
is moving to the northwest at 3 mph.

This northwestward motion is expected through tonight, followed by
a westward course Saturday with increasing forward speed. This path will
take Lane away from the islands. Regardless of the storm's track, life
threatening impacts extends far beyond the center's location. Do not
focus on the exact forecast track or intensity of Lane.

Tropical storm conditions are already occurring on the Big Island,
Maui County, and Oahu, and will continue through tonight. Tropical Storm
conditions are possible on Kauai County Saturday.

A slow moving rain band associated with Hurricane Lane continues to
affect the island chain this evening. There is the possibility the band
will linger over the islands through tonight. Heavy rains and flash
flooding are still ongoing especially over the north and east parts
of the Big Island, and windward Haleakala on Maui. Windward and
interior Kauai have been having some good showers move through,
although not enough to warrant an advisory thus far. Showers have
recently been increasing across Oahu and Molokai. The potential for
excessive rainfall remains 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. Although Lane is
weakening, it still has the potential to produce rain accumulations of
10 to 20 inches, with localized higher amounts. 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 large and life-threatening surf
and dangerous rip currents along shores with a southern exposure of all
Hawaiian Islands. A prolonged period of high surf will likely lead to
significant coastal erosion.

A High Surf Advisory is in effect for the south facing shores of the
smaller islands through tonight at 8 to 12 feet. A High Surf Advisory
remains in effect for the east facing shores of all islands at 10 to 14
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.

Tornadoes and large waterspouts are still possible with Lane, mainly
along and to the right of the track of Lane.

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:
    - Damage to porches, awnings, carports, sheds, and unanchored
      mobile homes. Unsecured lightweight objects blown about.
    - Many large tree limbs broken off. A few trees snapped or
      uprooted, but with greater numbers in places where trees are
      shallow rooted. Some fences and roadway signs blown over.
    - A few roads impassable from debris, particularly within urban
      or heavily wooded places. Hazardous driving conditions on
      bridges and other elevated roadways.
    - Scattered power and communications outages.


* 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 11 PM HST, or sooner if conditions
warrant.

$$
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