Public Advisory for TROPICAL STORM ISELLE

Raw Text File

TROPICAL STORM ISELLE ADVISORY NUMBER 33

Issued: 1100 PM HST THU AUG 07 2014

Iselle weakens to a tropical storm, continues churning toward the Big Island

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

LOCATION: 19.0N 155.1W
ABOUT 50 MI: 80 KM S OF HILO HAWAII
ABOUT 240 MI: 390 KM SE OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS: 70 MPH: 110 KM/H
PRESENT MOVEMENT: W OR 275 DEGREES AT 10 MPH: 17 KM/H
MINIMUM CENTRAL PRESSURE: 995 MB or 29.39 INCHES

WATCHES AND WARNINGS

CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY,

NONE.

SUMMARY OF WATCHES AND WARNINGS IN EFFECT,

A HURRICANE WARNING IS IN EFFECT FOR,
* HAWAII COUNTY

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

A HURRICANE WARNING MEANS THAT HURRICANE CONDITIONS ARE EXPECTED
SOMEWHERE WITHIN THE WARNING AREA. PREPARATIONS TO PROTECT LIFE AND
PROPERTY SHOULD HAVE ALREADY BEEN COMPLETED.

A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS ARE
EXPECTED SOMEWHERE WITHIN THE WARNING AREA WITHIN 36 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 pm HST, 0900 UTC, the center of tropical storm Iselle was located near latitude 19.0 north, longitude 155.1 west. Iselle is moving toward the west near 10 mph, 17 km/h, and this motion is expected to continue through Saturday, with some increase in forward speed on Friday.

Maximum sustained winds are near 70 mph, 110 km/h, with higher gusts. Weakening is forecast during the next 48 hours.

Tropical storm force winds extend outward up to 175 miles, 280 km from the center.

The estimated minimum central pressure is 995 mb, 29.39 inches.

HAZARDS AFFECTING LAND

WIND

Tropical storm conditions are occurring on the Big Island, and will continue through the night. Tropical storm conditions are expected over Maui county tonight, and for Oahu on Friday. Tropical storm conditions are expected for Kauai county later Friday.

RAINFALL

Rainfall totals of 5 to 8 inches, with isolated maximum amounts to 12 inches, are expected along the track of Iselle. These rains could cause life-threatening flash floods as well as rock and mud slides.

SURF

Swells generated by Iselle is producing very large and damaging mainly along east and south facing shores of the Big Island. This damaging surf will continue into Friday.

STORM SURGE

The combination of storm surge and the tide will cause normally dry areas near the coast to be flooded by rising waters. The water could reach the following heights above ground if the peak surge occurs at the time of high tide,.

Big island windward and Kau, 1 to 2 ft.

Surge related flooding depends on the relative timing of the surge and the tidal cycle, and can vary greatly over short distances.

NEXT ADVISORY
NEXT INTERMEDIATE ADVISORIES...100 AM HST AND 300 AM HST.
NEXT COMPLETE ADVISORY...500 AM HST.

$$

FORECASTER BIRCHARD