Public Advisory for HURRICANE ISELLE

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HURRICANE ISELLE ADVISORY NUMBER 24

Issued: 1100 PM HST TUE AUG 05 2014

Hurricane Iselle aiming for the main Hawaiian islands

SUMMARY OF 1100 PM HST...0900 UTC...INFORMATION

LOCATION: 16.9N 142.8W
ABOUT 830 MI: 1335 KM E OF HILO HAWAII
ABOUT 1030 MI: 1660 KM ESE OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS: 100 MPH: 155 KM/H
PRESENT MOVEMENT: WNW OR 285 DEGREES AT 13 MPH: 20 KM/H
MINIMUM CENTRAL PRESSURE: 974 MB or 28.77 INCHES

DISCUSSION AND 48-HOUR OUTLOOK

At 1100 pm HST, 0900 UTC, the center of hurricane Iselle was located near latitude 16.9 north, longitude 142.8 west. Iselle is moving toward the west-northwest near 13 mph, 20 km/h. This general motion is expected to continue through Thursday, with a slight increase in forward speed. On this forecast track, the outer winds of Iselle may reach the easternmost Hawaiian islands early Thursday afternoon.

Maximum sustained winds are near 100 mph, 155 km/h, with higher gusts. Some gradual weakening is forecast during the next 48 hours, and Iselle is forecast to become a strong tropical storm by Thursday.

Hurricane force winds extend outward up to 35 miles, 55 km, from the center, and tropical storm force winds extend outward up to 155 miles, 250 km.

The estimated minimum central pressure is 974 mb, 28.77 inches.

HAZARDS AFFECTING LAND

WIND

Tropical storm conditions are possible on the Big Island of Hawaii on Thursday, and portions of Maui county Thursday night.

SURF

Swells generated by Iselle are expected to reach the main Hawaiian islands tonight through Wednesday, and possibly becoming damaging along some coastlines by Thursday.

RAINFALL

Heavy rains associated with Iselle are expected to reach the Big Island Thursday and spread to the remainder of the state Thursday night and Friday. These rains could cause life-threatening flash floods and mud slides.

NEXT ADVISORY
NEXT INTERMEDIATE ADVISORY...200 AM HST.
NEXT COMPLETE ADVISORY...500 AM HST.

$$
FORECASTER HOUSTON