*** This article is archived from August 4, 2015 ***
As of 5 a.m. Thursday, post-tropical cyclone Guillermo continues to weaken and is picking up speed as it passes north of the islands.
Its center is located about 60 miles north-northeast of Lihue, with maximum sustained winds at 35 mph.
The storm system is moving west-northwest at 17 mph, and this general motion is expected to continue through tonight before the system dissipates on Saturday.
The storm is really just an area of swirling clouds and wind. It’s close enough to be picked up by weather radar but the rain, even near the core of the depression, isn’t much.
Vertical wind shear is preventing any more thunderstorms from developing, especially near the center.
Earlier Thursday, the center of Guillermo did a cyclonic “wobble” just northeast of Hawaii. Now that this temporary slowing has passed, the system has begun to accelerate.
A high surf warning is cancelled.
A high surf advisory is in effect for east-facing shores of Kauai and Oahu until 6 p.m. Friday.
The “Hurricane Hunters” of the U.S. Air Force 53rd Weather Reconnaissance Squadron conducted its first reconnaissance early Sunday at 4 a.m. as they flew through the storm. Crews dropped special sensors known as dropsondes into the storm to measure wind speeds, pressure and temperature.
KHON2’s Storm Coverage:
- Huge waves spotted in Maui’s Hana Bay due to Guillermo – Wednesday, Aug. 5
- Hawaii Island first to see effects from Guillermo – Tuesday, Aug. 4
- City will not open emergency shelters ahead of Guillermo – Tuesday, Aug. 4
- Monday storm preparations include warnings for high surf, ocean surges – Monday, Aug. 3
- Emergency management personnel getting ready for Guillermo – Sunday, Aug. 2
- Hawaii Island farmers hope that Guillermo doesn’t come their way – Saturday, Aug. 1
- Preparations underway as Guillermo approaches Hawaii – Friday, July 31