TROPICAL STORM ISELLE INTERMEDIATE ADVISORY NUMBER 33A
Issued: 100 AM HST FRI AUG 08 2014
Iselle rapidly weakening off the Kau coast
SUMMARY OF 100 AM HST...1100 UTC...INFORMATION
LOCATION: 19.0N 155.1W
ABOUT 45 MI: 80 KM S OF HILO HAWAII
ABOUT 240 MI: 390 KM SE OF HONOLULU HAWAII
MAXIMUM SUSTAINED WINDS: 60 MPH: 100 KM/H
PRESENT MOVEMENT: W OR 275 DEGREES AT 7 MPH: 11 KM/H
MINIMUM CENTRAL PRESSURE: 1001 MB or 29.56 INCHES
WATCHES AND WARNINGS
CHANGES IN WATCHES AND WARNINGS WITH THIS ADVISORY,
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,
* 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 BE RUSHED TO COMPLETION.
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
DISCUSSION AND 48-HOUR OUTLOOK
At 100 am HST, 1100 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 7 mph, 11 km/h, and this motion is expected to continue through Saturday, with some increase in forward speed.
Maximum sustained winds are near 60 mph, 100 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 1001 mb, 29.56 inches.
HAZARDS AFFECTING LAND
Tropical storm conditions are occurring on the Big Island and Maui county, and will continue through the night. Tropical storm conditions are expected on Oahu and Kauai county later today.
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.
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.
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 INTERMEDIATE ADVISORY...300 AM HST.
NEXT COMPLETE ADVISORY...500 AM HST.