Hurricane Olivia update 9/12 5 pm

Sept. 12 5:00 p.m. update:

Olivia continues to weaken as it moves away from the state toward the west-southwest.

The Tropical Storm Warning has been discontinued for O'ahu and Maui County.

There are no coastal watches or warnings in effect.

Olivia is moving west-southwest near 20 mph. This motion is expected to continue through tomorrow with a slight decrease in forward speed, followed by a turn toward the west on Friday.

Maximum sustained winds are near 40 mph with higher gusts. Gradual weakening is forecast during the next 48 hours. Olivia is expected to become a post-tropical remnant low on Thursday night or Friday.

Showers will continue to increase over portions of the main Hawaiian Islands today ahead of Tropical Storm Olivia. Olivia is expected to produce total rainfall of 5 to 10 inches in some areas, with isolated maximum amounts of 15 inches possible, especially in higher terrain. This rainfall may cause flash flooding. Nearly 9 inches of rain has already fallen on parts of Maui. 

Tropical-storm-force winds extend outward up to 70 miles.

Olivia is about 110 miles southwest of Honolulu and about 145 miles west-southwest of Kaunakakai.


Sept. 12 2:00 p.m. update:

Olivia is passing south of Oʻahu and is weakening.

Outages have been reported at Hale Anuenue and parts of lower campus.

A Tropical Storm Warning is still in effect for Oʻahu and Maui County.

A Tropical Storm Warning means that tropical storm conditions are expected within the watch area.

Olivia is moving west near 20 mph. A turn toward the west-southwest will occur this evening, with a similar west-southwest motion expected through Friday.

Maximum sustained winds are near 40 mph with higher gusts. Gradual weakening is forecast during the next 48 hours.

Showers will continue to increase over portions of the main Hawaiian Islands today ahead of Tropical Storm Olivia. Olivia is expected to produce total rainfall of 5 to 10 inches in some areas, with isolated maximum amounts of 15 inches possible, especially in higher terrain. This rainfall may cause flash flooding. Nearly 9 inches of rain has already fallen on parts of Maui. 

Tropical-storm-force winds extend outward up to 90 miles.

Olivia is about 45 miles south of Honolulu and about 70 miles west of Kaunakakai.


Sept. 12 11:00 a.m. update:

Tropical Storm Olivia makes brief landfall over northwest Maui, the storm is expected to move over Lanai as it moves westward. 

A Tropical Storm Warning is still in effect for Oʻahu and Maui County.

A Tropical Storm Warning means that tropical storm conditions are expected within the watch area.

Olivia is moving west near 15 mph, this motion is expected to continue through this morning. A motion toward the west-southwest is expected later today.

Maximum sustained winds are near 45 mph with higher gusts. Gradual weakening is forecast during the next 48 hours.

Showers will continue to increase over portions of the main Hawaiian Islands today ahead of Tropical Storm Olivia. Olivia is expected to produce total rainfall of 5 to 10 inches in some areas, with isolated maximum amounts of 15 inches possible, especially in higher terrain. This rainfall may cause flash flooding. Up to 8 inches of rain has already fallen on parts of Maui. 

Tropical-storm-force winds extend outward up to 90 miles.

Olivia is about 40 miles west of Kahului and about 60 miles east-southeast of Honolulu.


Sept. 12 5:00 a.m. update:

A Tropical Storm Warning is still in effect for Oʻahu and Maui County.

The Tropical Storm Warning for Hawaiʻi County and Kauaʻi County has been discontinued.

A Tropical Storm Warning means that tropical storm conditions are expected within the watch area.

All Oʻahu UH campuses will be open on Wednesday barring any sudden changes by Tropical Storm Olivia and activities will be held as scheduled, according to a UH email alert.

Olivia is moving west near 12 mph, this motion is expected to continue through this morning. A motion toward the west-southwest is expected later today, with an increase in forward speed.

Maximum sustained winds are near 45 mph with higher gusts. Gradual weakening is forecast during the next 48 hours.

Showers will continue to increase over portions of the main Hawaiian Islands today ahead of Tropical Storm Olivia. Olivia is expected to produce total rainfall of 5 to 10 inches in some areas, with isolated maximum amounts of 15 inches possible, especially in higher terrain. This rainfall may cause flash flooding. Up to 6 inches of rain has already fallen on parts of Maui. 

Tropical-storm-force winds extend outward up to 90 miles.

Olivia is about 55 miles east-northeast of Kahului and about 140 miles east of Honolulu.


Sept. 11 5:00 p.m. update:

A Tropical Storm Warning is still in effect for Kauaʻi County, Oʻahu, Maui County and Hawaiʻi County. 

A Tropical Storm Warning means that tropical storm conditions are expected somewhere in the warning area within 36 hours.

Olivia is moving west near 15 mph. A general west to west-southwest motion with a slower forward speed is expected this evening as the center of Olivia approaches the Maui and the Big Island. After Olivia moves past the islands, a faster west-southwest motion is expected to resume for the next couple days.

Maximum sustained winds are near 50 mph with higher gusts. Gradual weakening is forecast during the next 48 hours, but is expected to remain a tropical storm as it moves towards the islands.

Showers will continue to increase over portions of the main Hawaiian Islands today ahead of Tropical Storm Olivia. Olivia is expected to produce total rainfall of 5 to 10 inches in some areas, with isolated maximum amounts of 15 inches possible, especially in higher terrain. This rainfall may cause flash flooding.

Tropical-storm-force winds extend outward up to 105 miles.

Olivia is about 100 miles northeast of Hilo and about 240 miles east of Honolulu.


Sept. 11 11:00 a.m. update:

Olivia has speeded up and is moving toward the west near 17 mph towards the islands.

A Tropical Storm Warning has been issued for Kauaʻi County which includes the islands of Kauaʻi and Niʻihau.

A Tropical Storm Warning is still in effect for Oʻahu, Maui County and Hawaiʻi County

A continued west to west-southwest motion is expected later today. On the forecast track, Olivia will be moving over Hawaiʻi late tonight into Wednesday.

Maximum sustained winds are near 60 mph with higher gusts. Gradual weakening is forecast during the next 48 hours, but is expected to remain a tropical storm as it moves towards the islands.

Showers will continue to increase over portions of the main Hawaiian Islands today ahead of Tropical Storm Olivia. Olivia is expected to produce total rainfall of 5 to 10 inches in some areas, with isolated maximum amounts of 15 inches possible, especially in higher terrain.

Tropical-storm-force winds extend outward up to 90 miles.

Olivia is about 275 miles east-northeast of Kahului and 360 miles east of Honolulu.


Sept. 11 5:00 a.m. update:

Olivia has weakened a little more, but is expected to remain a tropical storm as it moves toward the islands.

A Tropical Storm Warning is still in effect for Oʻahu, Maui County and Hawaiʻi County.

A Tropical Storm Watch is still in effect for Kauaʻi and Niʻihau.

Olivia is moving westward near 10 mph. A continued west to west-southwest motion is expected later today. On the forecast track, Olivia will be moving over Hawaiʻi late tonight into Wednesday.

Maximum sustained winds are near 65 mph with higher gusts. Gradual weakening is forecast during the next 48 hours.

Tropical-storm-force winds extend outward up to 90 miles.

Olivia is about 350 miles east-northeast of Kahului and 440 miles east of Honolulu.


Sept. 10 5:00 p.m. update:

Olivia has been downgraded to a Tropical Storm and is expected to draw closer to the main Hawaiian Islands.

A Tropical Storm Warning has been issued for Oʻahu. A Tropical Storm Warning is still in effect for Maui County and Hawaiʻi County.

A Tropical Storm Watch has been issued for Kauaʻi and Niʻihau.

Olivia is moving westward near 10 mph. A continued west to west-southwest motion is expected for the next few days. On the forecast track, Olivia will be moving over Hawaiʻi late Tuesday night into Wednesday.

Maximum sustained winds are near 70 mph with higher gusts. Gradual weakening is forecast during the next 48 hours, but is expected to remain a tropical storm as it moves across the islands.

Tropical-storm-force winds extend outward up to 90 miles.

Olivia is about 380 miles east-northeast of Hilo and 530 miles east of Honolulu.


Sept. 10 11:00 a.m. update:

A Tropical Storm Warning is still in effect for Maui County and Hawaii County.

A Tropical Storm Watch is in effect for Oʻahu.

Olivia is moving west near 9 mph. A continued west to west-southwest motion is expected for the next few days. On the forecast track, the center of Olivia will be moving over the main Hawaiian Islands Tuesday night into Wednesday. 

Air Force Reserve Hurricane Hunters find Olivia is still a hurricane to the east of Hawaiʻi, with maximum sustained winds near 75 mph, with higher gusts. Little change in intensity is expected today, with gradual weakening expected afterward. Olivia is expected to approach the islands as a tropical storm.

Hurricane-force winds extend outward up to 15 miles from the center and tropical-storm-force winds extend outward up to 105 miles.


Sept. 10 5:00 a.m. update:

A Tropical Storm Warning has been issued for Maui County which includes the islands of Maui, Molokai, Lanai and Kahoʻolawe and Hawaiʻi County.

A Tropical Storm Watch is in effect for Oʻahu.

A Tropical Storm Warning means that tropical storms conditions are expected withing the warning area within the next 36 hours.

A Tropical Storm Watch means that tropical storms conditions are possible in the watch area within 48 hours.

Olivia is moving west near 10 mph. This general motion is expected to continue early today, followed by a turn toward the west-southwest starting later today. This motion is expected to continue through Tuesday night. Tropical storm conditions are expected over parts of the state starting late Tuesday.

Maximum sustained winds are near 85 mph with higher gusts. Little change in strength is forecast today, with slight weakening starting tonight through Tuesday. Olivia is forecast to be a tropical storm when it reaches the Hawaiian Islands.

Hurricane-force winds extend outward up to 30 miles from the center and tropical-storm-force winds extend outward up to 115 miles.

Olivia is expected to produce total rainfall of 10 to 15 inches, with isolated amounts of 20 inches possible, especially over sections of Maui County and the Big Island. This rainfall may produce flash flooding.

Large swells generated by Olivia will spread to the Hawaiian Islands early this week. Surf may become damaging across parts of the state.


Previous coverage

A Tropical Storm Watch has been issued for Oʻahu, Maui, Molokai, Lanai, Kahoʻolawe and the Big Island as Hurricane Olivia is expected to march towards Hawaiʻi.

A Tropical Storm Watch means that tropical storm conditions are possible within the watch area. A watch is typically issued 48 hours before the anticipated first occurrence of tropical-storm-force winds.

Olivia will be approaching the main Hawaiian Islands later Tuesday and Tuesday night. The storm is moving westward near 12 mph and this motion is expected to continue for the next 12 to 24 hours.

Hurricane Olivia is a category 1 hurricane with maximum sustained winds near 75 mph with higher gusts. Little change in strength is forecast during the next 36 hours, with gradual weakening expected afterward.

Hurricane-force winds extend outward up to 25 miles from the center and tropical-storm-force winds extend outward up to 125 miles.

Storm total rainfall amounts of 10 to 15 inches, with isolated amounts over 20 inches are possible.

Large swells generated by Olivia are expected to continue to increase near the main Hawaiian Islands.