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BULLETIN
Hurricane Douglas Advisory Number  15
NWS National Hurricane Center Miami FL       EP082020
500 PM HST Thu Jul 23 2020
 
...POWERFUL HURRICANE DOUGLAS SLIGHTLY STRONGER AS IT APPROACHES THE
CENTRAL PACIFIC...
 
 
SUMMARY OF 500 PM HST...0300 UTC...INFORMATION
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LOCATION...14.9N 138.8W
ABOUT 1125 MI...1810 KM ESE OF HILO HAWAII
MAXIMUM SUSTAINED WINDS...130 MPH...215 KM/H
PRESENT MOVEMENT...WNW OR 295 DEGREES AT 18 MPH...30 KM/H
MINIMUM CENTRAL PRESSURE...954 MB...28.17 INCHES
 
 
WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.
 
Interests in the Hawaiian Islands should monitor the progress of
Douglas. Watches could be issued on Friday for a portion of the
area.
 
 
DISCUSSION AND OUTLOOK
----------------------
At 500 PM HST (0300 UTC), the center of Hurricane Douglas was
located near latitude 14.9 North, longitude 138.8 West. Douglas is
moving toward the west-northwest near 18 mph (30 km/h), and this 
motion is expected to continue for the next few days with a gradual 
decrease in forward speed and a slight turn toward the west. On the 
forecast track Douglas will approach the Hawaiian Islands Saturday 
night, and be near those Islands on Sunday.
 
Maximum sustained winds have increased to near 130 mph (215 km/h) 
with higher gusts.  Douglas is a category 4 hurricane on the 
Saffir-Simpson Hurricane Wind Scale.  Gradual weakening expected to 
begin on Friday and continue through the weekend.  Douglas is 
forecast to be near hurricane strength when it approaches the 
Hawaiian Islands.  
 
Hurricane-force winds extend outward up to 30 miles (45 km) from the
center and tropical-storm-force winds extend outward up to 90 miles
(150 km).
 
The estimated minimum central pressure is 954 mb (28.17 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
SURF:  Swells generated by Douglas are expected to begin affecting 
portions of the Hawaiian Islands on Saturday.  These swells are 
likely to cause life-threatening surf and rip current conditions.  
Please consult products from your local weather office.
 
Key messages for Douglas can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDEP3 and WMO header WTPZ43 KNHC.
 
 
NEXT ADVISORY
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Next complete advisory at 1100 PM HST.
 
$$
Forecaster Brown
 
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