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Flood advisory issued for Oahu as storm remnants bring rain, sun, humidity

Craig Gima
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NOAA / GOES WEST

This composite satellite image shows cloud cover over Hawaii, newly formed Tropical Depression 9E southeast of Mexico (lower right) and remnants of former Hurricane Frank, roughly at longitude 130 mixing in with other clouds northeast of Hawaii.

A record string of tropical cyclones in July is bringing muggy conditions and an increased chance of showers to Hawaii through next weekend as the weakened storms pass near the islands.

Oahu is under a flood advisory until 11:15 p.m. tonight, the National Weather Service said.

Radar at 8:16 p.m. indicated brief periods of heavy rain across windward Oahu, particularly between Kahuku and Kaaawa, with rainfall rates of 1 to 2 inches per hour.

The advisory includes, but is not limited to, Waimanalo, Kailua and Waikane.

A mass of moist tropical air over the islands, including remnants of former East Pacific Hurricane Georgette, is moving past the islands today, bringing a mix of sun, showers and humidity.

Trade winds are blowing rain clouds over windward and mauka sections, with some rain crossing the mountains into leeward areas.

The wet tradewind weather is likely to continue through next weekend as remnants of former Hurricane Frank move near the state on Thursday and what’s left of newly-formed Tropical Depression 9E travels near Hawaii next weekend.

The eighth tropical cyclone to form in the East Pacific in July tied a record for tropical cyclone formation for the month set in 1985, the National Hurricane Center said in a tweet.

At 11 a.m., 9E was packing 35 mph winds about 900 miles west-southwest of Baja California moving west-northwest at 10 mph.

The storm could strengthen in to a tropical storm tonight or Monday before weakening just before it enters the Central Pacific.

If 9E reaches tropical storm strength, it will be the eighth tropical storm of the season and will be named named Howard. If it forms this afternoon, Howard will set a record for named storms in July. Georgette tied the old 1985 record, according to Philip Klotzbach, a meteorologist at Colorado State University and Eric Blake, a hurricane specialist at the National Hurricane Center, who regularly tweet about historical storm records.

The forecast for Honolulu and south shores of Oahu calls for a 50 percent chance of showers through Saturday. Tradewinds will become breezy by Wednesday, increasing to 15 to 25 mph. Highs are expected to be between 82 and 90 degrees.

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