BALTIMORE (WJZ) — Baltimore’s fourth Code Blue Alert of the season has been extended through Saturday.

The Code Blue Alert, which has been extended a second time, means it’s cold enough that hypothermia deaths are a concern. Last winter, 11 deaths were attributed to the cold. So far this season, one person has died of hypothermia.

Tuesday morning, as many headed back to work after the holidays, the wind chill made it feel like -3 in Baltimore, according to WJZ’s Marty Bass. The high of 26 for the day is well below the average of 42.

A very slight warm-up is expected Friday and Saturday, but highs will still only be near freezing. On Sunday, highs will dip back into the 20s.

“Through this prolonged cold weather spell, it is important that all Baltimoreans take precaution,” said Baltimore City Health Commissioner Dr. Leana Wen. “Hypothermia, or low body temperature, can be just as dangerous as extreme heat, and every year, there are Baltimoreans who die due to hypothermia. I am extending the Code Blue Declaration through Saturday morning because of the predicted dangerously cold temperatures and encouraging residents to stay indoors in heated areas. Please help those around you who are the most vulnerable to the cold, including children, the elderly, and people with chronic medical illnesses.”

Residents are encouraged to contact 311 if a neighbor is without heat or power so that city agencies can assist them. Energy assistance may be available to those who need it. For more information, individuals may contact one of the regional Community Action Partnership centers in Baltimore or call the Office of Home Energy Programs at 410-396-5555.

Find more information about Code Blue here.

For other cold-related inquiries and service requests, or to find a nearby homeless shelter, residents can call 311 or 211.

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