WTPA33 PHFO 240847
TCPCP3

BULLETIN
TROPICAL STORM DARBY ADVISORY NUMBER  51
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI   EP052016
1100 PM HST SAT JUL 23 2016
 
...DARBY CONTINUES MOVING SLOWLY WEST-NORTHWESTWARD AWAY FROM THE
BIG ISLAND...
 
 
SUMMARY OF 1100 PM HST...0900 UTC...INFORMATION
-----------------------------------------------
LOCATION...19.5N 156.8W
ABOUT 55 MI...85 KM W OF KAILUA-KONA HAWAII
ABOUT 145 MI...230 KM SSE OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...40 MPH...65 KM/H
PRESENT MOVEMENT...WNW OR 290 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...1004 MB...29.65 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES WITH THIS ADVISORY:
 
None.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT:
 
A Tropical Storm Warning is in effect for...
* All islands in the state of Hawaii.
 
A Tropical Storm Warning means that tropical storm conditions are
imminent or already occurring. In this case, tropical storm
conditions are occurring over portions of the Big Island, and are
expected over Maui County and Oahu later tonight and Sunday.
 
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 Hawaii.
 
 
DISCUSSION AND 48-HOUR OUTLOOK
------------------------------
At 1100 PM HST (0900 UTC), the center of Tropical Storm Darby was
located near latitude 19.5 North, longitude 156.8 West. Darby is
moving toward the west-northwest near 10 mph (17 km/h). Darby is
forecast to make a slight turn toward the northwest later tonight
and continue moving west-northwest over the next 48 hours, with
little change in forward speed.
 
Maximum sustained winds are near 40 mph (65 km/h) with higher gusts.
Little change in intensity is forecast through Sunday night with
slight weakening expected by Monday.
 
Tropical-storm-force winds extend outward up to 70 miles (110 km)
from the center. Sustained winds of 33 mph with gusts to 56 mph were
reported at the Oahu Forest NWR RAWS site in the Koolau mountain
range earlier this evening.

The estimated minimum central pressure is 1004 mb (29.65 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
WIND:  Tropical storm force winds are occurring over portions of the
Big Island, and are expected to occur over portions of Maui County
later 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 200 AM HST.
Next complete advisory at 500 AM HST.
 
$$
Forecaster Houston/Jelsema