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BULLETIN
Hurricane Walaka Intermediate Advisory Number 11A
NWS Central Pacific Hurricane Center Honolulu HI   CP012018
200 AM HST Tue Oct 02 2018
 
...WALAKA REMAINS A DANGEROUS CATEGORY 5 HURRICANE HEADING TOWARD
JOHNSTON ISLAND...
 
 
SUMMARY OF 200 AM HST...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...14.1N 170.1W
ABOUT 185 MI...300 KM S OF JOHNSTON ISLAND
ABOUT 945 MI...1520 KM WSW OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...160 MPH...260 KM/H
PRESENT MOVEMENT...NNW OR 345 DEGREES AT 8 MPH...13 KM/H
MINIMUM CENTRAL PRESSURE...921 MB...27.20 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
 
A Hurricane Watch is in effect for...
* Papahanaumokuakea Marine National Monument from Nihoa to French
Frigate Shoals to Maro Reef
 
A Hurricane Warning means that hurricane conditions are expected in
the warning area within 36 hours.
 
A Hurricane Watch means that hurricane conditions are possible
within the watch area within 48 hours.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 200 AM HST (1200 UTC), the center of Hurricane Walaka was located
near latitude 14.1 North, longitude 170.1 West. Walaka is moving
toward the north-northwest near 8 mph (13 km/h). A turn toward the
north is expected later tonight with an increase in forward speed
expected Tuesday through Wednesday. On the forecast track, the
center of Walaka is expected to pass just to the west of Johnston
Island on Tuesday.
 
Maximum sustained winds are near 160 mph (260 km/h) with higher
gusts.  Walaka is a category 5 hurricane on the Saffir-Simpson
Hurricane Wind Scale. Little change in intensity is expected through
Tuesday, with a weakening trend expected to begin late Tuesday night
or early Wednesday.
 
Hurricane-force winds extend outward up to 45 miles (75 km) from
the center and tropical-storm-force winds extend outward up to 185
miles (295 km).
 
The estimated minimum central pressure is 921 mb (27.20 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm force winds are expected across Johnston Island
starting late tonight, with hurricane conditions expected by
Tuesday afternoon.
 
SURF: Large surf will continue to affect the Johnston Island reefs
and shorelines through Wednesday.
 
RAINFALL: Heavy rainfall associated with Walaka will continue
across Johnston Island through early Wednesday.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 500 AM HST.
 
$$
Forecaster Jelsema
 
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