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Hurricane WALAKA


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BULLETIN
Hurricane Walaka Intermediate Advisory Number 13A
NWS Central Pacific Hurricane Center Honolulu HI   CP012018
200 PM HST Tue Oct 02 2018
 
...EYE OF WALAKA ONLY 60 MILES SOUTHWEST OF JOHNSTON ATOLL
AND WILL PASS NEARBY TO THE WEST OF THE ATOLL THIS EVENING...
 
 
SUMMARY OF 200 PM HST...0000 UTC...INFORMATION
----------------------------------------------
LOCATION...16.1N 170.2W
ABOUT 60 MI...95 KM SW OF JOHNSTON ISLAND
ABOUT 590 MI...950 KM SSW OF FRENCH FRIGATE SHOALS
MAXIMUM SUSTAINED WINDS...150 MPH...240 KM/H
PRESENT MOVEMENT...N OR 355 DEGREES AT 12 MPH...19 KM/H
MINIMUM CENTRAL PRESSURE...932 MB...27.53 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 200 PM HST (0000 UTC), the center of Hurricane Walaka was located
near latitude 16.1 North, longitude 170.2 West. Walaka is moving
toward the north near 12 mph (19 km/h). This general motion is
expected to continue through Wednesday night with a steady increase
in forward speed. On the forecast track, the center of Walaka is
expected to pass just to the west of Johnston Atoll early this
evening, then across portions of the Papahanaumokuakea Marine
National Monument on Wednesday night.
 
Maximum sustained winds are near 150 mph (240 km/h) with higher
gusts.  Walaka is a category 4 hurricane on the Saffir-Simpson
Hurricane Wind Scale.  Slight weakening is expected through tonight,
with rapid weakening forecast Wednesday and Thursday.
 
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 932 mb (27.53 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
WIND: Hurricane conditions expected to begin soon on Johnston
Atoll, continuing through this evening. Tropical storm force winds
are expected across the Papahanaumokuakea Marine National Monument
from Nihoa to French Frigate Shoals to Maro Reef beginning late
Wednesday, with hurricane conditions expected over portions of the
area Wednesday night.
 
SURF: Large surf associated with Walaka will continue to affect the
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 complete advisory at 500 PM HST.
 
$$
Forecaster R Ballard
 
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