Olivia weakens to a tropical storm, 10 September 2018

Accessed on 11 September 2018, 0200 UTC, Post #17618.



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As of 2 p.m. Monday, 10 September 2018, Hurricane Olivia has weakened into a tropical storm, packing 70 mph winds some 415 miles east northeast of Hilo, Hawaii.  Olivia continues to move west at 9 mph and could impact Hawaii Island sometime between Tuesday evening and early Wednesday morning.

Here is the analysis from “West Hawaii Today”:

“A tropical storm warning remains in effect for Hawaii and Maui counties. The warning means that tropical storm conditions are expected somewhere within the warning area within 36 hours.

A high surf advisory is also in effect for east-facing shores of the Hawaiian Islands through 6 p.m. Wednesday. Wave heights of 5 to 8 feet are forecast Monday. Surf is expected to build 10 to 14 feet Tuesday and then rise to 12 to 20 feet Tuesday night.

The storm’s expected to continue tracking west to west-southwest and gradually weaken over the next few days. On the current forecast track, the center of Olivia will be moving over the state as a strong tropical storm Tuesday night into Wednesday.

Damaging tropical storm-force winds may begin as early as Tuesday afternoon across Maui and the Big Island. Hurricane-force wind gusts are possible as Olivia moves across the state Tuesday night and Wednesday.

The chance for flooding rainfall will increase rapidly late Tuesday and will remain a significant threat through at least Wednesday. Preliminary storm total rainfall amounts are in the 10- to 15-inch range, with isolated areas receiving up to 20 inches. Windward areas are forecast to see the most rainfall.”

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Until next time,

Russ Roberts