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BULLETIN
Hurricane Hector Advisory Number  39
NWS Central Pacific Hurricane Center Honolulu HI   EP102018
500 PM HST Thu Aug 09 2018
 
...HECTOR STRENGTHENS AGAIN WHILE MOVING AWAY FROM THE MAIN HAWAIIAN
ISLANDS...
...TROPICAL STORM CONDITIONS ARE POSSIBLE ON JOHNSTON ISLAND
FRIDAY...
 
 
SUMMARY OF 500 PM HST...0300 UTC...INFORMATION
----------------------------------------------
LOCATION...17.1N 162.8W
ABOUT 430 MI...695 KM SW OF HONOLULU HAWAII
ABOUT 445 MI...715 KM E OF JOHNSTON ISLAND
MAXIMUM SUSTAINED WINDS...125 MPH...205 KM/H
PRESENT MOVEMENT...W OR 275 DEGREES AT 16 MPH...26 KM/H
MINIMUM CENTRAL PRESSURE...955 MB...28.20 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 means tropical storm conditions are possible
within the next 48 hours.
 
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 500 PM HST (0300 UTC), the center of Hurricane Hector was located
near latitude 17.1 North, longitude 162.8 West. Hector is moving
toward the west near 16 mph (26 km/h). A gradual turn toward the
west-northwest is expected tonight through late Friday, followed by
a northwestward motion. On the forecast track, the center of Hector
is expected to pass 100 to 200 miles north of Johnston Island late
Friday.

Maximum sustained winds are near 125 mph (205 km/h) with higher
gusts.  Hector is a category 3 hurricane on the Saffir-Simpson
Hurricane Wind Scale.  Some strengthening is forecast tonight,
followed by weakening during the next 24 to 48 hours. 
 
Hurricane-force winds extend outward up to 35 miles (55 km) from the
center and tropical-storm-force winds extend outward up to 105 miles
(165 km).
 
The estimated minimum central pressure is 955 mb (28.20 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
SURF: Swells generated by Hector should begin to impact Johnston
Island tonight. This will likely produce large and dangerous waves
along portions of the island from late tonight through Friday
night.
 
 
NEXT ADVISORY
-------------
Next intermediate advisory at 800 PM HST.
Next complete advisory at 1100 PM HST.
 
$$
Forecaster Kodama
 
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