Special statement at 2229 UTC from Honolulu forcast office
Posted by tvsteve on 8/6/2014, 7:30 pm
http://www.prh.noaa.gov/hnl/pages/HLS.php


HURRICANE ISELLE LOCAL STATEMENT for Oahu South Shore

Issued: 06 Aug 2014 12:29 pm HST


ISELLE MARCHING STEADILY TOWARD HAWAII AND HAS NOT WEAKENED



TROPICAL STORM WATCH REMAINS IN EFFECT


New information

Updated information for the Big Island, Maui county and the surrounding coastal waters.


Situation overview

Iselle is expected to bring heavy rains, high surf and damaging winds. Hurricane conditions are expected on the Big Island of Hawaii on Thursday. Tropical storm conditions are expected to spread to Maui county Thursday night and possibly to Oahu on Friday. Swells generated by Iselle are expected to reach the main Hawaiian islands today, possibly becoming damaging along some coastlines starting late tonight or Thursday. High surf is expected to reach the islands ahead of the heavy rains and strong winds. The high surf may bring coastal flooding, particularly when combined with afternoon astronomical high tides.

While there is still some uncertainty in the exact track and strength of Iselle, the Big Island and Maui are expected to be impacted first. The rest of the state remains at Risk to experience the impacts of Iselle.


Winds

Although the latest forecast is for sustained winds to remain below 40 mph, only a small change in the track of Iselle could result in higher winds. Depending on the exact track of Iselle, there is the possibility of moderate wind damage.


Storm surge and storm tide

Surf will steadily increase along the east facing shores later today and tonight, and reach hazardous levels as the storm approaches. Surf heights on east facing shores exceeding 8 feet are expected today ahead of Iselle with larger surf around 15 feet expected Thursday through Friday. The astronomical high tide for Kaneohe bay Thursday is 152 pm at 2.7 feet and Friday is 228 pm at 2.9 feet. The high surf and high tide combination will bring the potential for coastal flooding along low lying areas.


Inland flooding

A flash flood watch is in effect for the entire area. Heavy rainfall of around 4 to 7 inches is expected with isolated rainfall totals of 10 inches. These heavy rains could lead to life threatening flash floods.

Click for Flash Flood Watch Details


Precautionary/preparedness actions

For those under a warning, your preparations to protect life and property should be rushed to completion. In a tropical cyclone, conditions can change quickly. Evacuate if directed to do so by local officials, or if your home is vulnerable to high winds or flooding. Cancel any beach activities until further notice. Persons living near the shore should be prepared to evacuate quickly should building surf threaten.

For those under a watch, now is the time to prepare. Do not wait until it is too late. Stay calm and keep informed. Closely monitor NOAA weather radio or other local news outlets for official storm information. Listen for warnings or changes to the forecast.

It is vital that you do not focus on the exact forecast track. Forecast movement, direction, and speed are only estimates. Even small errors in the forecast track can mean major differences in where the worst conditions will occur. Damaging effects can extend far from the center.

Be ready to evacuate if necessary. Heed the advice of local officials and comply with any orders that are issued. Persons living near the shore should be prepared to evacuate quickly should building surf threaten.

At ports, docks, and marinas, perform the prescribed preparations according to your emergency operations plan. If you live on a boat, begin to safely secure your craft and make plans to leave it for adequate land based shelter.

Small craft should return to port or seek safe harbor.

Loose objects such as lawn furniture, garbage cans, and other items should be secured or stored indoors. Have supplies on hand and be ready for power outages.
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In the East Pacific: Iselle is now a major hurricane; forecast to weaken before reaching Hawaii - Chris in Tampa, 8/3/2014, 10:59 am
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