Conditions at Racine's North Beach Tuesday were much different than this past weekend.Lifeguards on duty put up green flags signaling safe swimming conditions.But within the past three days, four children have been pulled from Lake Michigan."We've had a number of unfortunate deaths in Lake Michigan, two to be exact, and one person fighting for their life," Racine County Sheriff Christopher Schmaling said Tuesday. "These are actually children we're talking about today and it makes it even that much more sadder."The first drowning happened about 6:30 p.m. Saturday at Zoo Beach.Eisha Figuereo Colon, 10, of Racine, was pulled from the water after being missing for nearly 30 minutes."A strong current pulled her out," Schmaling said.She later died at a hospital.The second incident happened minutes later at North Beach.Yadyinder Singh, 17, of Franklin, was pulled from Lake Michigan and taken to a hospital.He was pronounced dead Monday morning."It is with heavy hearts that our OCFSD community mourns the tragic loss of OCHS student Yaadwinder Singh," the school district said in a statement to WISN 12. "Our sincerest condolences and sympathy go out to the families and friends affected by this tragedy. Members of our Student Services Team will be on hand to offer any needed emotional support to our students and staff during this difficult time."The third near-drowning happened just after 5 p.m. Monday, about 30 minutes after lifeguards had left for the day.A 14-year-old Milwaukee County girl needed to be rescued, along with her 14-year-old friend.The two were swimming near the North Beach pier, Schmaling said."As our deputies approached after the 911 call because they were in distress, they noticed they were being pulled out by a very swift current," he said.Dive team Capt. Bradley Friend said rip currents were common near the break wall where swimming is not advised."These currents typically go anywhere from 2 to 8 mph and even if you're an Olympic swimmer, you're not going to swim back to shore in one of those currents," Friend said.One girl was taken by Flight For Life to Children's Hospital in Milwaukee.Her condition was not immediately clear.Deputies said the second teen was rescued with "cuts and scratches" to her body.Schmaling said in light of the drownings, they don't plan to close any beaches.But he urged the city to hire more lifeguards, extend lifeguard hours and put up more signage to keep beachgoers safe."To have people that are trained on that beach to have people that are ready to respond and at the ready in my view could have made a difference here," Schmaling said.He directed a question about a lifeguard shortage to Racine Mayor Cory Mason.Mason said his kids were at the beach Saturday when the one drowning took place."We're looking at if we can add more hours or add additional lifeguards," he said. "It is one of the few beaches left in the state of Wisconsin that has lifeguards on duty, but even with those lifeguards there, we need everybody to follow the rules and to stay in the area where we have lifeguards for the best safety."Racine Public Health Administrator Dottie-Kay Bowersox urged beachgoers to be cautious and safe."Lake Michigan can have strong, irregular and unpredictable currents that can easily place swimmers in challenging and life-threatening situations. My sincere condolences to the families and friends of those tragically lost these last few days. There is no way to describe the grief of losing a child or loved one," she said. "The city is currently reviewing beach and water safety programming. In addition, we look forward to discussing issues including pier safety, water patrol activities and lifeguard programming at county beaches with county representatives."Parks and Recreation Director Tom Molbeck urged beach visitors to follow the safety signage and observe water and weather conditions."Swim only in lifeguarded areas during lifeguarded times, and wear an approved United States Coast Guard Life Jacket," he said. "In addition, this Department sends its thoughts and prayers to the families mourning the tragic loss of their loved ones."The two also encouraged visitors to check weather reports before going to the beach to ensure there were no unsafe conditions.They also suggested swimmers wear lifejackets. The Racine County Dive Team will hold an informational meeting at North Beach on Saturday to discuss water safety, the dangers of undertow currents and the power of Lake Michigan. There weren't any drownings in Racine last summer.