Monday Morning Weather Forecast

August 3, 2015, 1:25 AM HST

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Image: Chris Archer / Charley Young

By Meteorologist Malika Dudley / Email: malika@mauinow.com

Alerts

A High Surf Advisory is in effect through 6:00 p.m. Tuesday. Along east facing shores we expect surf to build Monday into Tuesday. Surf heights of 8 to 12 foot faces are expected Monday and 10 to 14 feet through Tuesday. This advisory may need to be upgraded to a warning depending on conditions. Expect strong breaking waves, shore break and strong longshore and rip currents making swimming difficult and dangerous.

A Hydrologic Outlook has been issued by the National Weather Service. The latest forecast for Hurricane Guillermo takes the system over the island chain as a tropical storm. While Guillermo is expected to be moving steadily west-northwest as it passes across the island chain, abundant moisture drawn into the circulation will bring the potential for very heavy rainfall and flash flooding on Wednesday and Thursday. The details on the timing, location and amount of rainfall remain uncertain and are highly dependent on the eventual track of Guillermo.

A Small Craft Advisory is in effect for all Maui County channels as well as Māʻalaea Bay through 6:00 a.m. Monday. East winds up to 25 knots and rough seas to 11 feet are expected. Inexperienced mariners should avoid navigating in these conditions.

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**Click directly on the images below to make them larger. Charts include: Maui County high/low forecasted temperatures, projected winds, projected localized weather conditions and expected wave heights.**

SWIPE LEFT OR RIGHT

Today

Today we expect high temperatures from 87° to 92°. Northeast winds are expected around 15 mph. Mostly sunny skies with isolated morning showers for windward and mauka areas and scattered afternoon showers.

UV index at 13 (“extreme” exposure level)

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Tonight

Northeast winds are expected from 15 to 20 mph. Partly cloudy skies are expected with scattered showers for windward spots. Low temperatures from 73° to 78° are expected.

Looking Ahead

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Moderate to localized fresh trades winds are expected to ease slightly on Monday. Showers will be mostly concentrated over the windward Big Island today and tonight. Hurricane Guillermo will weaken to a tropical storm then approach the eastern portion of the state early Wednesday morning and will possibly affect the state into Thursday. A moderate to locally strong trade wind flow will resume Friday into the weekend.

Guillermo Update

The latest on Guillermo will be posted each morning and the same link will be updated throughout the day. Our hurricane tracker is also up and running.

Click here for emergency preparedness tips.

**Click here for your marine outlook and surf report.**