Public Advisory for HURRICANE ISELLE

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HURRICANE ISELLE INTERMEDIATE ADVISORY NUMBER 23A

Issued: 800 PM HST TUE AUG 05 2014

Hurricane Iselle continues to take aim at the main Hawaiian islands

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

LOCATION: 16.8N 142.3W
ABOUT 860 MI: 1385 KM E OF HILO HAWAII
MAXIMUM SUSTAINED WINDS: 100 MPH: 155 KM/H
PRESENT MOVEMENT: WNW OR 295 DEGREES AT 13 MPH: 20 KM/H
MINIMUM CENTRAL PRESSURE: 974 MB or 28.76 INCHES

DISCUSSION AND 48-HOUR OUTLOOK

At 800 pm HST, 0600 UTC, the center of hurricane Iselle was located near latitude 16.8 north, longitude 142.3 west. Iselle is moving toward the west-northwest near 13 mph, 20 km/h, and this motion is expected to continue during the next 48 hours, with some increase in forward speed as Iselle approaches Hawaii. On the forecast track, the center of Iselle will be approaching the Big Island Thursday afternoon.

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

Hurricane force winds extend outward up to 30 miles, 45 km, from the center, and tropical storm force winds extend outward up to 115 miles, 185 km.

The estimated minimum central pressure is 974 mb, 28.76 inches.

HAZARDS AFFECTING LAND

WIND

Tropical storm conditions are possible on the Big Island of Hawaii on Thursday.

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 COMPLETE ADVISORY...1100 PM HST.

$$
FORECASTER HOUSTON