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BULLETIN
Hurricane Douglas Advisory Number  27
NWS Central Pacific Hurricane Center Honolulu HI   EP082020
500 PM HST Sun Jul 26 2020
 
...HURRICANE DOUGLAS PASSING NORTH OF OAHU AND MOVING TOWARD THE
WEST-NORTHWEST...
 
 
SUMMARY OF 500 PM HST...0300 UTC...INFORMATION
----------------------------------------------
LOCATION...22.0N 157.3W
ABOUT 90 MI...150 KM NW OF KAHULUI HAWAII
ABOUT 60 MI...100 KM NE OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...85 MPH...140 KM/H
PRESENT MOVEMENT...WNW OR 295 DEGREES AT 16 MPH...26 KM/H
MINIMUM CENTRAL PRESSURE...989 MB...29.21 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY...
 
The Hurricane Warning has been canceled for Maui County, including
the islands of Maui, Lanai, Molokai and Kahoolawe.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
A Hurricane Warning is in effect for...
* Oahu
* Kauai County, including the islands of Kauai and Niihau
 
A Tropical Storm Warning is in effect for...
* Portions of the Papahanaumokuakea Marine National Monument from
Nihoa to French Frigate Shoals
 
A Tropical Storm Watch is in effect for...
* Portions of the Papahanaumokuakea Marine National Monument from
French Frigate Shoals to Maro Reef
 
A Hurricane Warning means that hurricane conditions are expected
somewhere within the warning area, in this case within the next
18 hours.
 
A Tropical Storm Warning means that tropical storm conditions are
expected somewhere within the warning area, in this case within the
next 36 hours.
 
A Tropical Storm Watch means that tropical storm conditions are
possible within the watch area, in this case within the next 36 to
48 hours.
 
Interests elsewhere in the Papahanaumokuakea Marine National
Monument should monitor the progress of this system.
 
For storm information specific to your area, please monitor
products issued by the National Weather Service office in
Honolulu Hawaii.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 500 PM HST (0300 UTC), the center of Hurricane Douglas was
located near latitude 22.0 North, longitude 157.3 West. Douglas is
moving toward the west-northwest near 16 mph (26 km/h), and this
motion is expected to continue over the next couple of days. On the
forecast track, Douglas will pass near Oahu and Kauai tonight.
 
Maximum sustained winds are near 85 mph (140 km/h) with higher
gusts.  Gradual weakening is forecast during the next 48 hours, but
Douglas is expected to remain a hurricane as it moves near the
islands tonight.
 
Hurricane-force winds extend outward up to 40 miles (65 km) from the
center and tropical-storm-force winds extend outward up to 115 miles
(185 km).
 
The estimated minimum central pressure is 989 mb (29.21 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
WIND:  Hurricane conditions are expected across portions of Oahu
this evening and on Kauai tonight. Due to the steep terrain of the
islands, localized strong wind gusts are expected.
 
SURF:  Large swells generated by Douglas will affect the Hawaiian
Islands tonight, producing life-threatening and potentially
damaging surf along exposed shores. Storm surge of up to 2 feet is
possible. Surf will decline on Monday.
 
RAINFALL:  Heavy rainfall associated with Douglas is expected to
affect portions of the main Hawaiian Islands tonight into Monday.
Total rain accumulations of 3 to 6 inches with locally higher
amounts are possible, with the greatest rainfall in elevated
terrain. This rain may result in flash flooding and land slides, as
well as rapid water level rises on small streams.
 
Key messages for Douglas can be found in the Tropical Cyclone
Discussion under AWIPS header HFOTCDCP2 and WMO header WTPA32 PHFO.
 
 
NEXT ADVISORY
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Next intermediate advisory at 800 PM HST.
Next complete advisory at 1100 PM HST.
 
$$
Forecaster Wroe
 
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