Categorized | Featured, Hurricane, News, Weather

Iselle downgraded to a Tropical Storm, still packing 70 mph winds

20140807-2300HST-TS-Iselle-track

Hawaii County Civil Defense Message

Information on closures due to Hurricane Iselle.

Video of Hawaii County Civil Defense Director Darryl Oliveira here.

For a reminder of how to prepare for a possible hurricane read this or go to our ‘Be Prepared’ menu near the top of this page.

TROPICAL STORM ISELLE ADVISORY NUMBER  33
NWS CENTRAL PACIFIC HURRICANE CENTER HONOLULU HI   EP092014
1100 PM HST THU AUG 07 2014
 
...ISELLE WEAKENS TO A TROPICAL STORM...CONTINUES CHURNING TOWARD 
THE BIG ISLAND...
 
SUMMARY OF 1100 PM HST...0900 UTC...INFORMATION
-----------------------------------------------
LOCATION...19.0N 155.1W
ABOUT 50 MI...80 KM S OF HILO HAWAII
ABOUT 240 MI...390 KM SE OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS...70 MPH...110 KM/H
PRESENT MOVEMENT...W OR 275 DEGREES AT 10 MPH...17 KM/H
MINIMUM CENTRAL PRESSURE...995 MB...29.39 INCHES
 
 
WATCHES AND WARNINGS
--------------------
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY...
 
NONE.
 
SUMMARY OF WATCHES AND WARNINGS IN EFFECT...
 
A HURRICANE WARNING IS IN EFFECT FOR...
* HAWAII COUNTY
 
A TROPICAL STORM WARNING IS IN EFFECT FOR...
* MAUI COUNTY...INCLUDING THE ISLANDS OF MAUI...MOLOKAI...LANAI...
  AND KAHOOLAWE.
* OAHU
* KAUAI COUNTY INCLUDING THE ISLANDS OF KAUAI AND NIIHAU.
 
A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA. PREPARATIONS TO PROTECT LIFE AND
PROPERTY SHOULD HAVE ALREADY BEEN COMPLETED.
 
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS.
 
INTERESTS IN THE NORTHWEST HAWAIIAN ISLANDS SHOULD MONITOR THE
PROGRESS OF ISELLE.
 
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 ISELLE WAS
LOCATED NEAR LATITUDE 19.0 NORTH...LONGITUDE 155.1 WEST. ISELLE IS
MOVING TOWARD THE WEST NEAR 10 MPH...17 KM/H...AND THIS MOTION IS
EXPECTED TO CONTINUE THROUGH SATURDAY...WITH SOME INCREASE IN 
FORWARD SPEED ON FRIDAY. 
 
MAXIMUM SUSTAINED WINDS ARE NEAR 70 MPH...110 KM/H...WITH HIGHER
GUSTS. WEAKENING IS FORECAST DURING THE NEXT 48 HOURS. 
 
TROPICAL STORM FORCE WINDS EXTEND OUTWARD UP TO 175 MILES...280 KM
FROM THE CENTER.
 
THE ESTIMATED MINIMUM CENTRAL PRESSURE IS 995 MB...29.39 INCHES.
 
 
HAZARDS AFFECTING LAND
----------------------
WIND...TROPICAL STORM CONDITIONS ARE OCCURRING ON THE BIG 
ISLAND...AND WILL CONTINUE THROUGH THE NIGHT. TROPICAL STORM 
CONDITIONS ARE EXPECTED OVER MAUI COUNTY TONIGHT...AND FOR OAHU ON 
FRIDAY. TROPICAL STORM CONDITIONS ARE EXPECTED FOR KAUAI COUNTY 
LATER FRIDAY.
 
RAINFALL...RAINFALL TOTALS OF 5 TO 8 INCHES...WITH ISOLATED MAXIMUM
AMOUNTS TO 12 INCHES...ARE EXPECTED ALONG THE TRACK OF ISELLE.
THESE RAINS COULD CAUSE LIFE-THREATENING FLASH FLOODS AS WELL AS
ROCK AND MUD SLIDES.
 
SURF...SWELLS GENERATED BY ISELLE IS PRODUCING VERY LARGE AND 
DAMAGING SURF...MAINLY ALONG EAST AND SOUTH FACING SHORES OF THE 
BIG ISLAND. THIS DAMAGING SURF WILL CONTINUE INTO FRIDAY.
 
STORM SURGE...THE COMBINATION OF STORM SURGE AND THE TIDE WILL
CAUSE NORMALLY DRY AREAS NEAR THE COAST TO BE FLOODED BY RISING 
WATERS. THE WATER COULD REACH THE FOLLOWING HEIGHTS ABOVE GROUND IF 
THE PEAK SURGE OCCURS AT THE TIME OF HIGH TIDE...
 
BIG ISLAND WINDWARD AND KAU...1 TO 2 FT
 
SURGE RELATED FLOODING DEPENDS ON THE RELATIVE TIMING OF THE SURGE
AND THE TIDAL CYCLE...AND CAN VARY GREATLY OVER SHORT DISTANCES.
 
 
NEXT ADVISORY
-------------
NEXT INTERMEDIATE ADVISORIES...100 AM HST AND 300 AM HST.
NEXT COMPLETE ADVISORY...500 AM HST.
NWS Infrared Satellite Image Loop

Latest NWS Infrared Satellite Image Loop of Iselle

For links to the latest weather forecasts, reports, radar and satellite imagery visit our Weather Page at hawaii247.com/weather

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