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BULLETIN
Hurricane Hector Advisory Number  40
NWS Central Pacific Hurricane Center Honolulu HI   EP102018
1100 PM HST Thu Aug 09 2018
 
...HECTOR INTENSIFIES AS IT MOVES RAPIDLY WEST FAR WEST-SOUTHWEST 
OF THE MAIN HAWAIIAN ISLANDS...
...TROPICAL STORM CONDITIONS ARE POSSIBLE ON JOHNSTON ISLAND
FRIDAY...
 
 
SUMMARY OF 1100 PM HST...0900 UTC...INFORMATION
-----------------------------------------------
LOCATION...17.4N 164.4W
ABOUT 500 MI...805 KM WSW OF HONOLULU HAWAII
ABOUT 340 MI...545 KM E 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 1100 PM HST (0900 UTC), the center of Hurricane Hector was
located near latitude 17.4 North, longitude 164.4 West. Hector is
moving just north of due west near 16 mph (26 km/h).  A gradual turn
toward the west-northwest is expected on Friday, followed by a
northwestward motion from Friday night through Saturday.  On the
latest forecast track, the center of Hector is expected to pass 100
to 200 miles north of Johnston Island late Friday.
 
Maximum sustained winds have increased to near 130 mph (215 km/h)
with higher gusts.  Hector is once again a category 4 hurricane on
the Saffir-Simpson Hurricane Wind Scale.  Some additional
strengthening is forecast through early Friday, followed by gradual
weakening from late Friday through Saturday.
 
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 by early Friday morning. This will likely produce large and
dangerous waves along portions of the island from Friday through
Friday night.
 
 
NEXT ADVISORY
-------------
Next intermediate advisory at 200 AM HST.
Next complete advisory at 500 AM HST.
 
$$
Forecaster Houston
 
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