HURRICANE LANE STILL A SERIOUS FLOOD PROBLEM FOR THE HAWAIIAN ISLANDS AUG 24, 2018

HURRICANE LANE ADVISORY

WTPA32 PHFO 241452
TCPCP2
 
BULLETIN
Hurricane Lane Advisory Number  40
NWS Central Pacific Hurricane Center Honolulu HI   EP142018
500 AM HST Fri Aug 24 2018
 
...DANGEROUS HURRICANE LANE MOVING SLOWLY NORTH TOWARD
THE MAIN HAWAIIAN ISLANDS...
...CATASTROPHIC FLOODING OCCURRING ON THE BIG ISLAND OF
HAWAII...
 
 
SUMMARY OF 500 AM HST...1500 UTC...INFORMATION
----------------------------------------------
LOCATION...18.7N 158.0W
ABOUT 180 MI...290 KM S OF HONOLULU HAWAII
ABOUT 145 MI...235 KM WSW OF KAILUA-KONA HAWAII
MAXIMUM SUSTAINED WINDS...110 MPH...175 KM/H
PRESENT MOVEMENT...N OR 360 DEGREES AT 5 MPH...7 KM/H
MINIMUM CENTRAL PRESSURE...962 MB...28.41 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
None.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Hurricane Warning is in effect for...
* Oahu
* Maui County...including the islands of Maui, Lanai, Molokai and
Kahoolawe
 
A Tropical Storm Warning is in effect for...
* Hawaii County
 
A Hurricane Watch is in effect for...
* Kauai County...including the islands of Kauai and Niihau
 
A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area. Preparations to protect life and
property should be rushed to completion.
 
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area.
 
A Hurricane Watch means that hurricane conditions are possible
within the watch area.
 
Interests in the Northwestern Hawaiian Islands should monitor
the progress of Hurricane Lane.
 
For storm information specific to your area, please monitor
products issued by the National Weather Service office in
Honolulu Hawaii.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 500 AM HST (1500 UTC), the center of Hurricane Lane was located
near latitude 18.7 North, longitude 158.0 West. Lane is moving
toward the north near 5 mph (7 km/h), and this general motion is
expected to continue through 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 dangerously
close to portions of the central Hawaiian islands later today and
tonight. 
 
Maximum sustained winds are near 110 mph (175 km/h) with higher
gusts. Lane is now category 2 hurricane on the Saffir-Simpson
Hurricane Wind Scale. Some additional weakening is forecast later
today and tonight, but Lane is expected to remain a dangerous
hurricane as it approaches the islands. Further weakening is
expected on Saturday.

Hurricane-force winds extend outward up to 35 miles (55 km) from the
center and tropical-storm-force winds extend outward up to 140 miles
(220 km).
 
The estimated minimum central pressure is 962 mb (28.41 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
WIND: 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 tonight. Tropical storm or hurricane
conditions are possible on Kauai starting tonight or Saturday.
 
RAINFALL: 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 rain
accumulations of 10 to 20 inches, with localized amounts up to 40
inches possible over portions of the Hawaiian Islands. Over 30
inches of rain has already fallen at a couple locations on the
windward side of the Big Island.
 
SURF: Very large swells generated by the slow moving hurricane will
severely impact the Hawaiian Islands into this weekend. These swells
will produce life-threatening and damaging surf along exposed
shorelines, particularly today through Saturday. In addition, a
prolonged period of extreme surf will also likely lead to
significant coastal erosion.
 
STORM SURGE: The combination of a dangerous storm surge and large
breaking waves will raise water levels by as much as 2 to 4 feet
above normal tide levels along south and west facing shores near
the center of Lane. The surge will be accompanied by large and
destructive waves.
 
 
NEXT ADVISORY
-------------
Next intermediate advisory at 800 AM HST.
Next complete advisory at 1100 AM HST.
 
$$
Forecaster Houston
http://www.prh.noaa.gov/cphc/tcpages/?storm=Lane