WTPA31 PHFO 270542

TCPCP1



BULLETIN

TROPICAL STORM NIALA INTERMEDIATE ADVISORY NUMBER   9A

NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI   CP062015

800 PM HST SAT SEP 26 2015



...NIALA WEAKENING SOUTHEAST OF THE BIG ISLAND...





SUMMARY OF 800 PM HST...0600 UTC...INFORMATION

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

LOCATION...16.7N 153.2W

ABOUT 245 MI...395 KM SSE OF HILO HAWAII

ABOUT 440 MI...710 KM SE OF HONOLULU HAWAII

MAXIMUM SUSTAINED WINDS...60 MPH...97 KM/H

PRESENT MOVEMENT...W OR 265 DEGREES AT 8 MPH...13 KM/H

MINIMUM CENTRAL PRESSURE...995 MB...29.38 INCHES





WATCHES AND WARNINGS

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

CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...



NONE.



SUMMARY OF WATCHES AND WARNINGS IN EFFECT...



A TROPICAL STORM WATCH IS IN EFFECT FOR...

* HAWAII COUNTY



A TROPICAL STORM WATCH MEANS THAT TROPICAL STORM CONDITIONS ARE

POSSIBLE WITHIN THE WATCH AREA.



INTERESTS ELSEWHERE IN THE MAIN HAWAIIAN ISLANDS SHOULD MONITOR

THE PROGRESS OF TROPICAL STORM NIALA DURING THE NEXT FEW DAYS.



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 800 PM HST...0600 UTC...THE CENTER OF TROPICAL STORM NIALA WAS

LOCATED NEAR LATITUDE 16.7 NORTH...LONGITUDE 153.2 WEST. NIALA IS

MOVING TOWARD THE WEST NEAR 8 MPH...13 KM/H. NIALA WILL MOVE WEST

THROUGH SUNDAY...THEN WEST-SOUTHWEST FROM SUNDAY NIGHT THROUGH

MONDAY.



MAXIMUM SUSTAINED WINDS ARE NEAR 60 MPH...97 KM/H...WITH HIGHER

GUSTS. NIALA WILL GRADUALLY WEAKEN THROUGH MONDAY AFTERNOON.



TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 90 MILES...150 KM

FROM THE CENTER.



THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 995 MB...29.38 INCHES.





HAZARDS AFFECTING LAND

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

RAINFALL...STORM TOTAL RAINFALL OF 2 TO 8 INCHES...WITH ISOLATED

MAXIMUM AMOUNTS UP TO 12 INCHES...ARE POSSIBLE WITHIN THE

WATCH AREA. THESE RAINFALL AMOUNTS COULD CAUSE LIFE-THREATENING

FLASH FLOODS...AS WELL AS ROCK SLIDES AND MUD SLIDES.



SURF...SWELLS ASSOCIATED WITH TROPICAL STORM NIALA WILL PRODUCE

LARGE SURF ALONG EAST AND SOUTHEAST FACING SHORES OF MAINLY THE BIG

ISLAND FROM THIS WEEKEND INTO EARLY NEXT WEEK.



WIND...TROPICAL STORM CONDITIONS ARE POSSIBLE ON THE BIG ISLAND

STARTING SUNDAY OR SUNDAY NIGHT.





NEXT ADVISORY

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

NEXT COMPLETE ADVISORY...1100 PM HST.



$$

FORECASTER HOUSTON