Hurricane Guillermo enters Central Pacific, forecast to weaken

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Hurricane Guillermo remains a solid category 2 hurricane and is forecast to weaken to a tropical storm by Monday.

Hurricane Guillermo is located at just over a thousand miles to the east of Hilo as of 11 a.m. Saturday. The system has maintained winds of 105 mph since Friday afternoon, but the forecast calls for a gradual weakening of wind speeds starting Saturday night. The storm is moving into a high wind shear environment, which means that high altitude winds will become unfavorable for further strengthening.

The National Hurricane Center now has Oahu, Maui County and Hawaii Island in the “Cone Of Uncertainty,” meaning the forecast tropical storm could come very close to the islands. Although it’s unclear at this point what exact impacts the state could see, a general increase in rainfall is expected and the trade winds will most likely be disrupted.

Hawaii Island may see a boost in rain beginning Wednesday. Other islands are forecast to see additional shower activity Thursday. Due to the sporadic nature of storm systems, conditions are subject to change. Stay informed and prepare accordingly.

Summary of 11 a.m. information

  • Location: 13.8N 140.1W
  • About 1,065 miles ESE of Hilo
  • Maximum sustained winds: 105 mph
  • Present movement: WNW at 12 mph
  • Minimum central pressure: 970 mb

Hurricane Hunters are expected to fly through the storm Sunday.

It’s standard procedure for the 53rd Weather Reconnaissance Squadron of the Air Force Reserve to fly into storms threatening any part of the U.S. or one of its territories.

Crews drop special sensors known as dropsondes into the storm to measure wind speeds, pressure and temperature.

NOAA Pacific Radar



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