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Hurricane Lane Special Advisory Number 30
NWS Central Pacific Hurricane Center Honolulu HI EP142018
630 PM HST Tue Aug 21 2018
...LANE STRENGTHENS TO CATEGORY 5 HURRICANE...
SUMMARY OF 630 PM HST...0430 UTC...INFORMATION
ABOUT 375 MI...605 KM SSE OF KAILUA-KONA HAWAII
ABOUT 535 MI...860 KM SSE OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...160 MPH...260 KM/H
PRESENT MOVEMENT...WNW OR 285 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...922 MB...27.23 INCHES
WATCHES AND WARNINGS
CHANGES WITH THIS ADVISORY:
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Hurricane Warning is in effect for...
* Hawaii County
A Hurricane Watch is in effect for...
* Maui County...including the islands of Maui, Lanai, Molokai and
A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area. A warning is typically issued
36 hours before the anticipated first occurrence of tropical-storm-
force winds, conditions that make outside preparations difficult
or dangerous. Preparations to protect life and property should be
rushed to completion.
A Hurricane Watch means that hurricane conditions are possible
within the watch area. A watch is typically issued 48 hours before
the anticipated first occurrence of tropical-storm-force winds,
conditions that make outside preparations difficult or dangerous.
Interests elsewhere in the main Hawaiian Islands, and across the
Northwestern Hawaiian Islands, should continue to closely monitor
the progress of Hurricane Lane. Additional Tropical Storm or
Hurricane Watches or Warnings may be issued tonight or Wednesday.
For storm information specific to your area, please monitor
products issued by the National Weather Service office in
DISCUSSION AND OUTLOOK
At 630 PM HST (0430 UTC), the eye of Hurricane Lane was located by
NOAA aircraft near latitude 14.5 North, longitude 154.0 West. Lane
is moving toward the west-northwest near 9 mph (15 km/h) and this
motion is expected to continue tonight. A turn toward the northwest
is expected on Wednesday, followed by a turn to the north-northwest
on Thursday. On the forecast track, the center of Lane will move
very close to or over the main Hawaiian Islands from Thursday
Data from the aircraft indicate that maximum sustained winds have
increased to near 160 mph (260 km/h) with higher gusts. Lane is now
a category 5 hurricane on the Saffir-Simpson Hurricane Wind Scale.
Slow weakening is forecast during the next 48 hours, but Lane is
forecast to remain a dangerous hurricane as it draws closer to the
Hurricane-force winds extend outward up to 40 miles (65 km) from the
center and tropical-storm-force winds extend outward up to 140 miles
The estimated minimum central pressure is 922 mb (27.23 inches).
HAZARDS AFFECTING LAND
WIND: Tropical storm conditions are expected within the
Hurricane Warning area beginning late Wednesday night into
early Thursday morning, with hurricane conditions expected
somewhere within the warning area on Thursday. Tropical storm
conditions are possible within the Hurricane Watch area beginning
Thursday into Thursday night, with hurricane conditions possible
late Thursday night into Friday.
RAINFALL: Excessive rainfall associated with Lane is expected
to affect portions of the Hawaiian Islands from late Wednesday into
the weekend, leading to flash flooding and landslides. Lane is
expected to produce total rain accumulations of 10 to 15 inches with
isolated amounts greater than 20 inches over the Hawaiian Islands.
SURF: Large swells generated by Lane will impact the Hawaiian
Islands, beginning tonight on the Big Island, spreading
across the remainder of the island chain on Wednesday. These
swells will produce large and potentially damaging surf along
exposed west, south and east facing shorelines.
Next intermediate advisory at 800 PM HST.
Next complete advisory at 1100 PM HST.