LOS ANGELES (CBSLA.com) —  Seven temporary shelters will open for the homeless during a series of storms expected this week, the Los Angeles Homeless Services Authority announced Monday.

The additional shelters are located in county-owned gymnasiums. Four of them are open Monday night. The other three will open Tuesday night.

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Sheriff’s and Housing Authority officials have been reaching out to homeless people living in riverbeds and flood-control channels to warn them about the impending rain and encouraging them to take advantage of the shelters, according to the Authority.

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The homeless can get free transportation to and from the shelter locations from any of the pick-up points throughout the City and County. Information on locations and transportation to reach them is available at lahsa.org or by calling 211.

Most of the winter shelters located throughout the county already opened in November and December.

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Los Angeles County’s health officer has declared a cold weather alert for mountain areas and the Antelope Valley, where the wind chill could drop below freezing.