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BULLETIN
Hurricane Hector Intermediate Advisory Number 43A
NWS Central Pacific Hurricane Center Honolulu HI   EP102018
800 PM HST Fri Aug 10 2018
 
...POWERFUL HURRICANE HECTOR MOVING AWAY FROM JOHNSTON ISLAND...
 
 
SUMMARY OF 800 PM HST...0600 UTC...INFORMATION
----------------------------------------------
LOCATION...18.5N 168.9W
ABOUT 135 MI...220 KM NNE OF JOHNSTON ISLAND
ABOUT 610 MI...980 KM SE OF LISIANSKI ISLAND
MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H
PRESENT MOVEMENT...WNW OR 290 DEGREES AT 14 MPH...22 KM/H
MINIMUM CENTRAL PRESSURE...950 MB...28.06 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
None.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Watch is in effect for...
* Portions of the Papahanaumokuakea Marine National Monument from
Lisianski Island to Pearl and Hermes Atoll.
 
A Tropical Storm Watch means that tropical storm conditions are
possible across the watch area within 48 hours.
 
Interests elsewhere in the Northwestern Hawaiian Islands on Midway
and Kure Atolls should monitor the progress of Hector.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 800 PM HST (0600 UTC), the center of Hurricane Hector was located
near latitude 18.5 North, longitude 168.9 West. Hector is moving
toward the west-northwest near 14 mph (22 km/h). This motion is
expected to continue tonight, followed by a turn toward the
northwest on Saturday. This general motion should continue through
Monday.
 
Maximum sustained winds are near 130 mph (215 km/h) with higher
gusts. Hector is a category 4 hurricane on the Saffir-Simpson
Hurricane Wind Scale. Weakening is expected during the next few
days.
 
Hurricane-force winds extend outward up to 35 miles (55 km) from
the center and tropical-storm-force winds extend outward up to 110
miles (175 km).
 
The estimated minimum central pressure is 950 mb (28.06 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
SURF:  Large north swells generated by Hector will peak at Johnston
Island tonight, then gradually decline on Saturday. Hector will
also produce southeast swells that will spread over portions of the
Northwestern Hawaiian Islands during the next few days. The
potentially large swells will peak between Maro Reef and Lisianski
Island Saturday night and early Sunday, and across Midway Atoll and
Kure Atoll late Sunday and early Monday.
 
WIND:  Tropical Storm conditions are possible across Lisianski
Island and Pearl and Hermes Atoll on Sunday.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 1100 PM HST.
 
$$
Forecaster Birchard
 
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