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BULLETIN
Hurricane Hector Intermediate Advisory Number 40A
NWS Central Pacific Hurricane Center Honolulu HI   EP102018
200 AM HST Fri Aug 10 2018
 
...POWERFUL HURRICANE HECTOR MOVING RAPIDLY WESTWARD FAR
WEST-SOUTHWEST OF THE MAIN HAWAIIAN ISLANDS...
...TROPICAL STORM CONDITIONS ARE POSSIBLE ON JOHNSTON ISLAND
LATER TODAY...
 
 
SUMMARY OF 200 AM HST...1200 UTC...INFORMATION
----------------------------------------------
LOCATION...17.6N 165.2W
ABOUT 540 MI...870 KM WSW OF HONOLULU HAWAII
ABOUT 290 MI...465 KM ENE OF JOHNSTON ISLAND
MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H
PRESENT MOVEMENT...W OR 280 DEGREES AT 16 MPH...26 KM/H
MINIMUM CENTRAL PRESSURE...951 MB...28.09 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
None.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
A Tropical Storm Watch is in effect for...
* Johnston Island
 
A Tropical Storm Watch indicates tropical storm conditions are
possible.
 
Interests in the Northwestern Hawaiian Islands, including Midway
and Kure Atolls and the Papahanaumokuakea Marine National Monument
west of French Frigate Shoals, should monitor the progress of
Hector. This does not include the main Hawaiian Islands.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 200 AM HST (1200 UTC), the center of Hurricane Hector was located
near latitude 17.6 North, longitude 165.2 West. Hector is moving
just north of due west near 16 mph (26 km/h).  A gradual turn toward
the west-northwest is expected later this morning, followed by a
northwestward motion from tonight through Saturday.  On the latest
forecast track, the center of Hector is expected to pass more than
100 miles north of Johnston Island later today.
 
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.  Some additional strengthening is possible
this morning, followed by gradual weakening from later today
through Saturday night.
 
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 951 mb (28.09 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
SURF: Swells generated by Hector should begin to impact Johnston
Island later this morning. This will likely produce large and
dangerous waves along portions of the island from later today
through tonight.
 
 
NEXT ADVISORY
-------------
Next complete advisory at 500 AM HST.
 
$$
Forecaster Houston
 
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