WTPA33 PHFO 212115 CCA

TCPCP3



BULLETIN

TROPICAL STORM DARBY ADVISORY NUMBER  41

NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI   EP052016

1100 AM HST THU JUL 21 2016



...DARBY EDGING CLOSER TO HAWAII WITH LITTLE CHANGE IN STRENGTH...





SUMMARY OF 1100 AM HST...2100 UTC...INFORMATION

-----------------------------------------------

LOCATION...18.6N 146.6W

ABOUT 560 MI...900 KM E OF HILO HAWAII

ABOUT 755 MI...1215 KM ESE OF HONOLULU HAWAII

MAXIMUM SUSTAINED WINDS...65 MPH...100 KM/H

PRESENT MOVEMENT...W OR 260 DEGREES AT 14 MPH...22 KM/H

MINIMUM CENTRAL PRESSURE...998 MB...29.47 INCHES





WATCHES AND WARNINGS

--------------------

CHANGES WITH THIS ADVISORY:



A Tropical Storm Watch has been issued for Hawaii County

and Maui County.



SUMMARY OF WATCHES AND WARNINGS IN EFFECT:



A Tropical Storm watch is in effect for...

* Hawaii County

* Maui County, including the islands of Maui, Molokai, Lanai and

Kahoolawe



A Tropical Storm watch means that tropical storm conditions are

possible within the watch area within 48 hours.



Interests elsewhere in the Hawaiian Islands should monitor the

progress of Darby.





DISCUSSION AND 48-HOUR OUTLOOK

------------------------------

At 1100 AM HST (2100 UTC), the center of Tropical Storm Darby was

located near latitude 18.6 North, longitude 146.6 West. Darby is

moving toward the west near 14 mph (22 km/h).  While this general

motion is expected to continue over the next 48 hours, some

decrease in forward speed is expected late Friday into Saturday.



Maximum sustained winds are near 65 mph (100 km/h) with higher

gusts.  Little change in strength is forecast during the next 48

hours.



Tropical-storm-force winds extend outward up to 105 miles (165 km)

from the center.



The estimated minimum central pressure is 998 mb (29.47 inches).





HAZARDS AFFECTING LAND

----------------------

WIND:  Tropical-storm-force winds are possible over the Big Island

and portions of Maui county on Saturday.



SURF:  Swells generated by Darby are expected to reach the Hawaiian

Islands over the next couple of days, possibly becoming damaging

along some coastlines Friday and Saturday.



RAINFALL:  Heavy rains associated with Darby are expected to reach

the Big Island and portions of Maui county late Friday, potentially

impacting the remainder of the state Saturday and Sunday.





NEXT ADVISORY

-------------

Next intermediate advisory at 200 PM HST.

Next complete advisory at 500 PM HST.



$$

Forecaster Birchard