Public Advisory for TROPICAL STORM ISELLE

Raw Text File

TROPICAL STORM ISELLE ADVISORY NUMBER 35

Issued: 1100 AM HST FRI AUG 08 2014

Iselle continuing to buffet Hawaii with strong winds and heavy rains

SUMMARY OF 1100 AM HST...2100 UTC...INFORMATION

LOCATION: 19.5N 158.0W
ABOUT 130 MI: 210 KM W OF KAILUA-KONA HAWAII
ABOUT 125 MI: 200 KM S OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS: 50 MPH: 85 KM/H
PRESENT MOVEMENT: W OR 280 DEGREES AT 15 MPH: 24 KM/H
MINIMUM CENTRAL PRESSURE: 1009 MB or 29.80 INCHES

WATCHES AND WARNINGS

CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY,

NONE.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT,

A TROPICAL STORM WARNING IS IN EFFECT FOR,
* HAWAII COUNTY
* MAUI COUNTY, INCLUDING THE ISLANDS OF MAUI, MOLOKAI, LANAI,
AND KAHOOLAWE.
* OAHU
* KAUAI COUNTY INCLUDING THE ISLANDS OF KAUAI AND NIIHAU.

A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 HOURS, .IN
THIS CASE IN THE NEXT 12 TO 24 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 am HST, 2100 UTC, the center of tropical storm Iselle was located by air force reserve hurricane hunter aircraft near latitude 19.5 north, longitude 158.0 west. Iselle is moving toward the west near 15 mph, 24 km/h, and this motion is expected to continue through early Sunday with some slowing in forward speed. On the forecast track, the center of Iselle will be passing about 100 miles south of Oahu this afternoon, and about 130 miles south of Kauai tonight.

Maximum sustained winds are near 50 mph, 85 km/h, with higher gusts. Some weakening is forecast during the next 48 hours, and Iselle may weaken to a depression by Sunday.

Tropical storm force winds extend outward up to 105 miles, 165 km from the center. A wind gust to 68 mph, 109 km/h, was reported on Kahoolawe earlier this morning.

The estimated minimum central pressure is 1009 mb, 29.80 inches.

HAZARDS AFFECTING LAND

WIND

Tropical storm conditions will gradually diminish on the Big Island and Maui today. Tropical storm conditions are likely over portions of Oahu today, and Kauai tonight, especially over mountains and where winds blow downslope from higher terrain.

RAINFALL

Rainfall totals of 5 to 8 inches, with isolated maximum amounts to 12 inches, are expected near the track of Iselle. The heaviest rainfall will likely occur over mountainous terrain. These rains could cause life-threatening flash floods as well as rock and mud slides.

SURF

Swells generated by Iselle are producing very large and damaging mainly along east and south facing shores of the Big Island. This damaging surf will diminish later today.

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

$$
FORECASTER R BALLARD