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Hurricane Walaka Intermediate Advisory Number 17A
NWS Central Pacific Hurricane Center Honolulu HI   CP012018
200 PM HST Wed Oct 03 2018
 
...DANGEROUS HURRICANE WALAKA NOW MOVING INTO THE PAPAHANAUMOKUAKEA
MARINE NATIONAL MONUMENT...
 
 
SUMMARY OF 200 PM HST...0000 UTC...INFORMATION
----------------------------------------------
LOCATION...22.2N 168.0W
ABOUT 160 MI...255 KM SW OF FRENCH FRIGATE SHOALS
ABOUT 655 MI...1055 KM W OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...130 MPH...210 KM/H
PRESENT MOVEMENT...NNE OR 25 DEGREES AT 23 MPH...37 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...
* 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 imminent or occurring within the warning area.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 200 PM HST (0000 UTC), the eye of Hurricane Walaka was located
near latitude 22.2 North, longitude 168.0 West. Walaka is moving
toward the north-northeast near 23 mph (37 km/h) and this motion
is expected to continue 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 130 mph (210 km/h) with higher
gusts.  Walaka is a category 4 hurricane on the Saffir-Simpson
Hurricane Wind Scale. A continued weakening trend is forecast
tonight and expected to continue through Friday. However, Walaka
will remain a powerful and life-threatening hurricane as it
crosses the Papahanaumokuakea Marine National Monument tonight.
 
Hurricane-force winds extend outward up to 70 miles (110 km) from
the center and tropical-storm-force winds extend outward up to 220
miles (355 km).
 
The estimated minimum central pressure is 946 mb (27.94 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
WIND: Tropical storm force winds are starting to spread 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 through this afternoon. 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 continue to spread across the
Papahanaumokuakea Marine National Monument from Nihoa to French
Frigate Shoals to Maro Reef through tonight.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 500 PM HST.
 
$$
Forecaster Brenchley
 
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