Authorities continued searching Monday for a 31-year-old Atlanta woman who got tired while swimming in Lake Lanier and could not make it back to her boat.

The woman, identified as Madeline Sinagra, jumped off a sailboat to go for a swim Sunday, and the boat drifted away from her, according to the Hall County Sheriff’s Office.

Double-digit winds at the lake may have been a factor.

“The wind was blowing pretty heavy (Sunday), and it blew the sailboat parallel and away from her,” Department of Natural Resources spokesman Mike Burgamy told Channel 2 Action News.

Deputies and fire services were called to the lake between Port Royale and Old Federal Park just before 4 p.m. Sunday when it was feared the woman had drowned.

A man still on the boat tried to rescue the woman when she became tired. After attempts to throw a line to her failed, the man went after her, he told deputies.

“The male reported that he then went into the water in an attempt to rescue the victim, but was unable to locate her after she went under and did not resurface,” sheriff’s spokesman Sgt. Stephen Wilbanks said in a statement.

Sinagra was not wearing a life jacket, according to Channel 2.

Dive teams spent an hour looking for the woman Sunday afternoon but had to suspend their search due to lightning in the area.

The woman’s suspected drowning comes days after the body of a 51-year-old woman was pulled from the lake. It is assumed she drowned after falling off a dock, according to authorities.

MORE: Just how deadly is Lake Lanier? 

Teresa Ann Graham of Hall County was pulled from the lake Tuesday night shortly after her husband noticed her missing.

RELATED: Suspected drowning victim fell off dock into Lake Lanier, sheriff says

“Investigators have found no evidence of foul play in the death,” sheriff’s spokesman Lt. Scott Ware said.

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Police said the 21-year-old man was taken to Grady Memorial Hospital in critical condition.