[Tropical] Hurricane Local Statement

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Tropical Storm Lane Local Statement Advisory Number 44
National Weather Service Honolulu HI  EP142018
1143 PM HST Fri Aug 24 2018

This product covers the Hawaiian islands

**LANE'S OUTER RAIN BANDS PRODUCING SEVERE FLOODING ACROSS PARTS OF
THE HAWAIIAN ISLANDS**

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 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 135 miles south-southwest of Honolulu
    - 19.4N 158.5W
    - Storm Intensity 65 mph
    - Movement North-northwest or 335 degrees at 3 mph

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

Lane remains a tropical storm late this evening, with maximum
sustained winds of 65 mph. As of 11 PM HST, Tropical Storm Lane was
located about 135 miles south-southwest of Honolulu and about 190 miles
south-southeast of Lihue. Lane is moving slowly to the north-northwest
at 3 mph.

Lane is expected to continue moving slowly toward the north-northwest
through Saturday morning, followed by a turn to the west with an
increase in forward speed starting on Saturday afternoon. This forecast
track takes Lane south of Kauai and Niihau and then away from the
islands. However, regardless of the storm's track, life threatening
flash flooding, along with locally strong winds and possible isolated
tornadoes, will continue to extend far beyond the center's location.
Do not focus on the exact forecast track or intensity of Lane.

Tropical storm conditions are expected in and near rain bands on the
Big Island, Maui County, and Oahu, and will continue overnight into
Saturday. Kauai County remains under a Tropical Storm Watch, and
tropical storm conditions are possible there starting on Saturday.

Slow moving rain bands associated with Lane continue to affect the
island chain from Oahu eastward to the Big Island late this evening,
with the heaviest rain focusing over windward sections of the Big
Island. Torrential rains and severe flash flooding are ongoing over
large sections of the Big Island, and have also developed this evening
over some areas of windward Maui. Heavy rains have spread westward
over Molokai and Lanai during the evening, and may spread westward to
Oahu overnight. The potential for additional excessive rainfall
remains high, which will lead to life threatening flash flooding, as
well as landslides. Flooding will be possible in areas that are
typically not prone to flooding. Although Lane is weakening, it is
still expected to produce total rainfall of 10 to 20 inches in some
areas. 20 to 30 inches of rain has already fallen over some parts
of the windward Big Island, with over 40 inches of rain recorded
at a couple of locations.

A High Surf Advisory remains in effect for the south and east facing
shores of all islands.

Tornadoes and large waterspouts remain possible with Lane, mainly
along and to the right of the track from the Big Island through Oahu.

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

* FLOODING RAIN:
Potential impacts from the flooding rain are still unfolding across
the Hawaiian islands. Remain well guarded against life-threatening
flood waters having possible devastating impacts.
If realized, 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.

* WIND:
Potential impacts from the main wind event are now unfolding across
the state from Oahu to the Big Island. Remain well sheltered from
hazardous wind having possible significant impacts. If realized,
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.

* TORNADOES:
Potential impacts from tornadoes are still unfolding across the
Hawaiian islands. Remain well braced against a tornado event having
possible isolated impacts. If realized, 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.

* SURGE:
Although water levels are running up to one foot higher than predicted,
little to no impacts are anticipated at this time across the Hawaiian
islands.

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.

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.

If you are prone to flooding, 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 by 6 AM HST, or sooner if conditions warrant.

$$

Jacobson
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