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BULLETIN
TROPICAL STORM DARBY ADVISORY NUMBER  50
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI   EP052016
500 PM HST SAT JUL 23 2016
 
...DARBY MOVING OVER MAUNA LOA SLOPES...
 
 
SUMMARY OF 500 PM HST...0300 UTC...INFORMATION
----------------------------------------------
LOCATION...19.3N 155.8W
ABOUT 25 MI...40 KM SSE OF KAILUA-KONA HAWAII
ABOUT 195 MI...310 KM SE OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...W OR 275 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...1006 MB...29.71 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
A Tropical Storm Warning has been issued for Kauai County,
including the islands of Kauai and Niihau.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* Hawaii County
* Maui County, including the islands of Maui, Molokai, Lanai and
Kahoolawe
* Oahu
* Kauai County, including the islands of Kauai and Niihau
 
A Tropical Storm Warning means that tropical storm conditions are
expected within the warning area within 36 hours. In this case,
tropical storm conditions are occurring over portions of the Big
Island, and are expected over Maui County and Oahu within 24
hours.
 
Interests in the eastern portion of the Papahanaumokuakea Marine
National Monument should monitor the progress of Darby.
 
For storm information specific to your area, please monitor
products issued by the National Weather Service office in
Honolulu.
 
 
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 500 PM HST (0300 UTC), the center of Tropical Storm Darby was
located near latitude 19.3 North, longitude 155.8 West. Darby is
moving toward the west near 10 mph (17 km/h). Darby is forecast to
make a turn toward the northwest later tonight and continue moving
northwestward over the next 48 hours, with little change in forward
speed.
 
Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Slight weakening is forecast during the next 48 hours.
 
Tropical-storm-force winds extend outward up to 70 miles (110 km)
from the center. Sustained winds of 43 mph and wind gusts to 61
mph were been reported in Kohala Ranch on the Big Island earlier
this afternoon. 
 
The estimated minimum central pressure is 1006 mb (29.71 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
WIND:  Tropical storm force winds are expected over the Big Island
through this evening, over portions of Maui County tonight and
Sunday, over Oahu Sunday and Sunday night, and over Kauai County
Sunday night and Monday.
 
SURF:  Swells generated by Darby are expected to impact the
Hawaiian Islands over the next day or so, with swells diminishing
thereafter.
 
RAINFALL:  Storm total rainfall of 8 to 12 inches, with possible
isolated maximum amounts of 15 inches. These rains could
produce life-threatening flash floods and landslides.
 
 
NEXT ADVISORY
-------------
Next intermediate advisory at 800 PM HST.
Next complete advisory at 1100 PM HST.
 
$$
Forecaster Birchard
 
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