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BULLETIN
Hurricane Olivia Advisory Number  40
NWS Central Pacific Hurricane Center Honolulu HI   EP172018
500 AM HST Mon Sep 10 2018
 
...HURRICANE OLIVIA STILL MOVING TOWARD HAWAII...
...TROPICAL STORM WARNINGS HAVE BEEN ISSUED FOR MAUI COUNTY AND 
THE BIG ISLAND...
 
 
SUMMARY OF 500 AM HST...1500 UTC...INFORMATION
----------------------------------------------
LOCATION...21.7N 148.0W
ABOUT 480 MI...770 KM ENE OF HILO HAWAII
ABOUT 635 MI...1025 KM E OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...85 MPH...140 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...980 MB...28.94 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
A Tropical Storm Warning has been issued for...
* Maui County...including the islands of Maui, Molokai, Lanai, and
Kahoolawe
* Hawaii County
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* Maui County...including the islands of Maui, Molokai, Lanai, and
Kahoolawe
* Hawaii County
 
A Tropical Storm Watch is in effect for...
* Oahu
 
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area within 36 hours.
 
A Tropical Storm Watch means that tropical storm conditions are
possible in the watch area within 48 hours.
 
Interests on Kauai and Niihau should closely monitor the progress
of Olivia.
 
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 Olivia was located
near latitude 21.7 North, longitude 148.0 West. Olivia is moving
toward the west near 10 mph (17 km/h). This general motion is
expected to continue early today, followed by a turn toward the
west-southwest starting later today. This west-southwest motion is
expected to continue through Tuesday night. On this forecast
track, tropical storm conditions are expected over parts of Hawaii
starting late Tuesday.
 
Maximum sustained winds are near 85 mph (140 km/h) with higher
gusts. Little change in strength is forecast today, with slight
weakening starting tonight and continuing through Tuesday. However,
Olivia is forecast to be a strong tropical storm when it reaches
the Hawaiian Islands.
 
Hurricane-force winds extend outward up to 30 miles (45 km) from the
center and tropical-storm-force winds extend outward up to 115 miles
(185 km).
 
The estimated minimum central pressure is 980 mb (28.94 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
 
WIND: Tropical storm conditions are expected somewhere within the
warning area starting late Tuesday. Tropical storm conditions are
possible within the watch area starting early Wednesday morning.
 
RAINFALL: Olivia is expected to produce total rainfall accumulations
of 10 to 15 inches. Isolated maximum amounts of 20 inches are
possible, especially over windward sections of Maui County and the
Big Island. This rainfall may produce life-threatening flash
flooding.
 
SURF: Large swells generated by Olivia will spread from east to
west across the Hawaiian Islands early this week. This will cause
surf to build along exposed east facing shorelines as Olivia
approaches. This surf may become damaging across parts of the state.
 
NEXT ADVISORY
-------------
Next intermediate advisory at 800 AM HST.
Next complete advisory at 1100 AM HST.
 
$$
Forecaster Houston
 
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