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BULLETIN
Tropical Storm Olivia Intermediate Advisory Number 43A
NWS Central Pacific Hurricane Center Honolulu HI   EP172018
200 AM HST Tue Sep 11 2018
 
...OLIVIA CONTINUES MOVING TOWARD HAWAII...
 
 
SUMMARY OF 200 AM HST...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...21.9N 150.7W
ABOUT 320 MI...515 KM ENE OF HILO HAWAII
ABOUT 470 MI...755 KM E OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...999 MB...29.50 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
None.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* Oahu
* Maui County...including the islands of Maui, Molokai, Lanai, and
Kahoolawe
* Hawaii County
 
A Tropical Storm Watch is in effect for...
* Kauai County...including the islands of Kauai and Niihau.
 
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.
 
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 AM HST (1200 UTC), the center of Tropical Storm Olivia was
located near latitude 21.9 North, longitude 150.7 West. Olivia is
moving toward the west near 10 mph (17 km/h). A turn to the
west-southwest is expected later today, with this general motion
continuing for the next couple of days. On the forecast track, the
center of Olivia will be moving over portions of the main Hawaiian
Islands late tonight into Wednesday.
 
Maximum sustained winds are near 65 mph (100 km/h) with higher
gusts. Gradual weakening is forecast during the next 48 hours, but
Olivia is expected to remain a tropical storm as it moves over the
islands.
 
Tropical-storm-force winds extend outward up to 105 miles (165 km)
from the center.
 
The estimated minimum central pressure is 999 mb (29.50 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are expected over Maui County and
the Big Island starting later today or tonight. Tropical storm
conditions are expected over Oahu starting Wednesday morning.
Tropical storm conditions are possible over Kauai County starting
Wednesday afternoon or evening.
 
RAINFALL: Olivia is expected to produce total rainfall accumulations
of 10 to 15 inches, with isolated maximum amounts of 20 inches
possible. This rainfall may produce life-threatening flash flooding.
 
SURF: Large swells generated by Olivia will impact the main Hawaiian
Islands over the next couple of days. This will cause surf to
build, mainly along exposed east facing shores, and surf may become
damaging.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 500 AM HST.
 
$$
Forecaster Birchard
 
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