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BULLETIN
Hurricane Walaka Advisory Number  14
NWS Central Pacific Hurricane Center Honolulu HI   CP012018
500 PM HST Tue Oct 02 2018
 
...WALAKA MOVING NORTHWARD AND SLOWLY WEAKENING...
...CENTER PASSING JUST WEST OF JOHNSTON ATOLL...
 
 
SUMMARY OF 500 PM HST...0300 UTC...INFORMATION
----------------------------------------------
LOCATION...16.7N 170.2W
ABOUT 45 MI...75 KM W OF JOHNSTON ISLAND
ABOUT 560 MI...895 KM SSW OF FRENCH FRIGATE SHOALS
MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H
PRESENT MOVEMENT...N OR 10 DEGREES AT 13 MPH...20 KM/H
MINIMUM CENTRAL PRESSURE...946 MB...27.94 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
None.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Hurricane Warning is in effect for...
* Johnston Atoll
* Papahanaumokuakea Marine National Monument from French Frigate
Shoals to Maro Reef
 
A Tropical Storm Warning is in effect for...
* Papahanaumokuakea Marine National Monument from Nihoa to French
Frigate Shoals
 
A Hurricane Warning means that hurricane conditions are expected in
the warning area within 36 hours.
 
A Tropical Storm Warning means that tropical storm conditions are
expected within the warning area within 36 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 500 PM HST (0300 UTC), the center of Hurricane Walaka was located
near latitude 16.7 North, longitude 170.2 West. Walaka is moving
toward the north near 13 mph (20 km/h). A turn toward the
north-northeast with a faster forward motion is expected over the
next couple of days. The eye of Walaka is passing about 45 miles
west of Johnston Atoll early this evening, and on the forecast
track, the center will pass between French Frigate Shoals and
Gardner Pinnacles Wednesday night.
 
Maximum sustained winds are near 130 mph (215 km/h) with higher
gusts.  Walaka is a category 4 hurricane on the Saffir-Simpson
Hurricane Wind Scale.  Weakening is expected over the next few days,
but Walaka is expected to remain a hurricane as it passes across the
Papahanaumokuakea Marine National Monument.
 
Hurricane-force winds extend outward up to 40 miles (65 km) from the
center and tropical-storm-force winds extend outward up to 185 miles
(295 km).
 
The estimated minimum central pressure is 946 mb (27.94 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
WIND: Hurricane conditions are expected on Johnston Atoll tonight,
with conditions gradually improving by Wednesday morning. Tropical
storm force winds are expected across the Papahanaumokuakea
Marine National Monument from Nihoa to French Frigate Shoals to Maro
Reef beginning Wednesday afternoon, with hurricane conditions
expected over portions of the area Wednesday night.
 
SURF: Large surf associated with Walaka will continue to affect
Johnston Atoll through Wednesday. Large surf will affect the
Papahanaumokuakea Marine National Monument from Nihoa to French
Frigate Shoals to Maro Reef beginning early Wednesday.
 
RAINFALL: Heavy rainfall associated with Walaka will continue
across Johnston Atoll through early Wednesday, and will reach the
Papahanaumokuakea Marine National Monument from Nihoa to French
Frigate Shoals to Maro Reef on Wednesday.
 
 
NEXT ADVISORY
-------------
Next intermediate advisory at 800 PM HST.
Next complete advisory at 1100 PM HST.
 
$$
Forecaster R Ballard
 
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