Monsoon 2018

Tucsonans may experience some showers from Sunday evening through Tuesday as a result of Hurricane Rosa passing through the region.

Rain is expected across portions of Southeastern Arizona and in the Tucson area on Monday, with a 60 to 70 percent chance of showers likely as remnants from Hurricane Rosa drench the area, according to the National Weather Service.

The wet weather will linger through Tuesday, dropping to a 20 percent chance of precipitation by Wednesday evening.

The heaviest activity is expected to stay west of Tucson, weather officials said.

A flash-flood watch will be in effect west and northwest of the city Monday morning through Tuesday, the National Weather Service said in a forecast Sunday on its Facebook page.

Hurricane Rosa was on a track Sunday to drench northwest Mexico and parts of the U.S. Southwest, prompting tropical storm warnings for the Baja California coast and flash-flood watches for parts of four U.S. states.

The U.S. National Hurricane Center says Rosa should still be at tropical storm force when it hits the Baja California Peninsula and the Mexican state of Sonora on Monday with flooding rains.

It’s then expected to move quickly to the northwest as it weakens, bringing 2 to 4 inches of rain to the Mogollon Rim in Northern Arizona and 1 to 2 inches to the rest of the desert Southwest, the central Rockies and the Great Basin. Some isolated areas might see more, forecasters said.


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