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Tropical Storm Olivia Intermediate Advisory Number 41A...Corrected
NWS Central Pacific Hurricane Center Honolulu HI   EP172018
200 PM HST Mon Sep 10 2018
 
...OLIVIA BECOMES A TROPICAL STORM AS IT CONTINUES TO MOVE TOWARD
THE MAIN HAWAIIAN ISLANDS...
 
 
SUMMARY OF 200 PM HST...0000 UTC...INFORMATION
----------------------------------------------
LOCATION...21.9N 149.1W
ABOUT 415 MI...670 KM ENE OF HILO HAWAII
ABOUT 565 MI...910 KM E OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...70 MPH...115 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 9 MPH...15 KM/H
MINIMUM CENTRAL PRESSURE...991 MB...29.26 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
None.
 
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 in 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 200 PM HST (0000 UTC), the center of Tropical Storm Olivia was
located near latitude 21.9 North, longitude 149.1 West. Olivia is
moving toward the west near 9 mph (15 km/h). A continued west to
west-southwest motion is expected for the next few days. On the
forecast track, the center of Olivia will be moving over the main
Hawaiian Islands Tuesday night into Wednesday.
 
Air Force Reserve Hurricane Hunters recently found that Olivia has
become a tropical storm, with maximum sustained winds near 70 mph
(115 km/h), with higher gusts. Gradual weakening is expected as
Olivia continues to approach the main Hawaiian Islands.
 
Tropical-storm-force winds extend outward from the center up to 105
miles (165 km).
 
The estimated minimum central pressure is 991 mb (29.26 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 late Tuesday night or 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 complete advisory at 500 PM HST.
 
$$
Forecaster R Ballard
 
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