Updated article here: They have been found and are safe.
Lake Geneva police are seeking the public’s help for information regarding the whereabouts of 40-year-old Michalene Melges, and her three sons.
Chief Michael S. Rasmussen says Melges and her three sons, 14-year-old Hans, 12-year-old Kristian “Max,” and 10-year-old Maverik “Buddy” were last seen leaving their home in Lake Geneva, Wisconsin on May 10.

Roughly the area where Michalene Melges and her three children were last seen. Google Maps image