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BULLETIN
Hurricane Walaka Advisory Number  17
NWS Central Pacific Hurricane Center Honolulu HI   CP012018
1100 AM HST Wed Oct 03 2018
 
...DANGEROUS HURRICANE WALAKA MOVING INTO THE PAPAHANAUMOKUAKEA
MARINE NATIONAL MONUMENT TODAY...
 
 
SUMMARY OF 1100 AM HST...2100 UTC...INFORMATION
-----------------------------------------------
LOCATION...21.4N 168.5W
ABOUT 220 MI...360 KM SW OF FRENCH FRIGATE SHOALS
ABOUT 680 MI...1095 KM W OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...140 MPH...220 KM/H
PRESENT MOVEMENT...NNE OR 20 DEGREES AT 22 MPH...35 KM/H
MINIMUM CENTRAL PRESSURE...942 MB...27.82 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
None.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Hurricane Warning is in effect for...
* 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 indicates that hurricane conditions are expected
in the warning area starting tonight.
 
A Tropical Storm Warning indicates that tropical storm conditions
are expected within the warning area starting this afternoon.

 
DISCUSSION AND OUTLOOK
----------------------
At 1100 AM HST (2100 UTC), the eye of Hurricane Walaka was
located near latitude 21.4 North, longitude 168.5 West. Walaka is
moving toward the north-northeast near 22 mph (35 km/h) and this
motion with a faster forward speed is expected through tonight.
Walaka is forecast to turn toward the north with a slower forward
speed Thursday and Thursday night. On this forecast track, the
center of Walaka will cross the Papahanaumokuakea Marine
National Monument between French Frigate Shoals and Gardner
Pinnacles tonight.
 
Maximum sustained winds are near 140 mph (220 km/h) with higher
gusts.  Walaka is a category 4 hurricane on the Saffir-Simpson
Hurricane Wind Scale. A weakening trend is forecast today and
expected to continue through Friday. However, Walaka will
likely remain a powerful and life-threatening hurricane as it
crosses the Papahanaumokuakea Marine National Monument tonight.
 
Hurricane-force winds extend outward up to 60 miles (95 km) from the
center and tropical-storm-force winds extend outward up to 205 miles
(335 km).
 
The estimated minimum central pressure is 942 mb (27.82 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm force winds are expected to start spreading
across the Papahanaumokuakea Marine National Monument from
Nihoa to French Frigate Shoals to Maro Reef this afternoon, with
hurricane conditions expected over portions of the area between
French Frigate Shoals and Maro Reef tonight.
 
SURF: Large surf associated with Walaka will continue to affect
Johnston Atoll today. Large surf will impact the Papahanaumokuakea
Marine National Monument through early Thursday morning. These
large waves will likely inundate some of the low-lying atolls,
especially from French Frigate Shoals to Maro Reef.
 
RAINFALL: Torrential rainfall will begin to spread across the
Papahanaumokuakea Marine National Monument from Nihoa to French
Frigate Shoals to Maro Reef later today, and continue through
tonight.
 
 
NEXT ADVISORY
-------------
Next intermediate advisory at 200 PM HST.
Next complete advisory at 500 PM HST.
 
$$
Forecaster Brenchley
 
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