ZCZC HFOTCPCP5 ALL
TTAA00 PHFO DDHHMM
 
BULLETIN
Tropical Storm Olivia Intermediate Advisory Number 48A
NWS Central Pacific Hurricane Center Honolulu HI   EP172018
800 AM HST Wed Sep 12 2018
 
...CENTER OF OLIVIA JUST OFF THE NORTHERN COAST OF MAUI AND MOVING
TOWARD THE WEST...
 
 
SUMMARY OF 800 AM HST...1800 UTC...INFORMATION
----------------------------------------------
LOCATION...21.1N 156.1W
ABOUT 25 MI...40 KM ENE OF KAHULUI HAWAII
ABOUT 115 MI...185 KM E OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...45 MPH...75 KM/H
PRESENT MOVEMENT...W OR 270 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...1005 MB...29.68 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
 
Interests in the Northwest Hawaiian Islands should monitor the
progress of Olivia.
 
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere in the warning area.
 
For storm information specific to your area, please monitor
products issued by the National Weather Service office in
Honolulu Hawaii.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 800 AM HST (1800 UTC), the center of Tropical Storm Olivia was
located near latitude 21.1 North, longitude 156.1 West. Olivia is
moving toward the west near 10 mph (17 km/h). A turn toward the
west-southwest is expected today, with an increase in forward
speed. This general motion is then expected to continue the next
couple of days.
 
Maximum sustained winds are near 45 mph (75 km/h) with higher
gusts. Some weakening is forecast during the next 48 hours.
 
Tropical-storm-force winds extend outward up to 90 miles (150 km)
from the center.
 
The estimated minimum central pressure is 1005 mb (29.68 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm conditions are expected in Maui County today.
Tropical storm conditions are expected to begin over Oahu later this
morning. Remember that wind gusts can be much stronger near higher
terrain, and in the upper floors of high-rise buildings. Winds can
also be especially gusty through gaps between mountains and where
winds blow downslope.
 
RAINFALL: Showers will continue to increase over the main Hawaiian
Islands today. Olivia is expected to produce total rainfall
accumulations of 5 to 10 inches in some areas, with isolated maximum
amounts of 15 inches possible, especially in higher terrain. This
rainfall may produce life-threatening flash flooding. Up to 6 inches
of rain has already fallen over parts of Maui.
 
SURF: Large swells generated by Olivia will impact the main Hawaiian
Islands through tonight. This will result in dangerously high and
potentially damaging surf, mainly along exposed east facing shores.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 1100 AM HST.
 
$$
Forecaster Wroe
 
NNNN