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BULLETIN
Hurricane Walaka Intermediate Advisory Number 14A
NWS Central Pacific Hurricane Center Honolulu HI   CP012018
800 PM HST Tue Oct 02 2018
 
...DANGEROUS WALAKA MOVING RAPIDLY NORTH TOWARD THE
PAPAHANAUMOKUAKEA MARINE NATIONAL MONUMENT...
...JOHNSTON ATOLL REMAINS WITHIN THE SOUTHEAST EYEWALL THIS
EVENING...
 
 
SUMMARY OF 800 PM HST...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...17.4N 170.2W
ABOUT 65 MI...105 KM NW OF JOHNSTON ISLAND
ABOUT 515 MI...830 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.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 800 PM HST (0600 UTC), the center of Hurricane Walaka was located
near latitude 17.4 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.
 
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.  Some gradual weakening is expected over the
next few days, but Walaka is forecast to remain a hurricane as it
passes across the Papahanaumokuakea Marine National Monument late
Wednesday.
 
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 will persist on Johnston Atoll tonight,
with conditions gradually improving during the day on Wednesday.
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 between
French Frigate Shoals and Maro Reef 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 beginning early
Wednesday. These large waves will likely inundate some of the
low-lying atolls, especially from French Frigate Shoals to Maro
Reef.
 
RAINFALL: Torrential 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 starting Wednesday.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 1100 PM HST.
 
$$
Forecaster Houston
 
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