Hurricane Trudy moved toward southwestern and west-central areas of Mexico's Pacific coast and could keep growing through Saturday, forecasters said.

The center of Trudy will approach the coast on Saturday, making its closest pass Sunday. A hurricane warning was in effect from Manzanillo in Colima state to Cabo Corrientes in Jalisco.

The storm was a Category 1 hurricane with maximum sustained winds of 90 mph on Saturday morning.

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Trudy was about 250 miles west of Acapulco, in the Mexican state of Guerrero, and under 200 miles south-southeast of Manzanillo, Colima state, while moving northwest at 8 mph, the U.S. National Hurricane Center said.

The Mexican navy urged the maritime community and coastal residents to exercise extreme caution due to high waves, heavy rains and the risk of rising river levels, flooding and landslides in vulnerable areas.

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The state of Colima has said that risks are currently low, but the storm could bring significant rainfall that could have damaging effects due to the saturated ground following the successive storms that have hit the Pacific coast.

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Through the weekend, Trudy is expected to produce 4 to 8 inches of rain, with isolated higher totals around 15 inches.

Champi threatens Guam

Also in the Pacific, Typhoon Champi headed towards on Guam as it moved west at 15 mph. Maximum sustained winds were 130 mph, according to the U.S. Weather Service, making it the equivalent of a Category 4 Atlantic hurricane. Forecasters said it could become a super typhoon in the next 12 hours.

It was forecast to pass just south of Guam. A typhoon warning was issued for Guam and Rota along with a tropical storm warning for Tinian, Saipan and nearby areas. Flood watches are also in effect. Tinian and Saipan could see 3-5 inches. Rota could see up to 8 inches, while Guam could see over a foot of rain.