Public Advisory for HURRICANE ISELLE

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HURRICANE ISELLE ADVISORY NUMBER 23

Issued: 500 PM HST TUE AUG 05 2014

Iselle continues to weaken, but still moving toward Hawaii

SUMMARY OF 500 PM HST...0300 UTC...INFORMATION

LOCATION: 16.8N 141.6W
ABOUT 905 MI: 1460 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: 977 MB or 28.85 INCHES

DISCUSSION AND 48-HOUR OUTLOOK

At 500 pm HST, 0300 UTC, the center of hurricane Iselle was located near latitude 16.8 north, longitude 141.6 west. Iselle is moving toward the west-northwest near 13 mph, 20 km/h. 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. Additional weakening is forecast during the next 48 hours, and Iselle is expected to 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 977 mb, 28.85 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 late Tuesday through Wednesday, and possibly becoming damaging by Thursday.

RAINFALL

Heavy rains associated with Iselle will 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...800 PM HST.
NEXT COMPLETE ADVISORY...1100 PM HST.

$$
FORECASTER BIRCHARD/R BALLARD