MSU Extension released on May 5 new recommendations for handling refrigerated and frozen foods safely following a power outage. The organization highlighted the importance of checking refrigerator and freezer temperatures to reduce the risk of foodborne illness when electricity is restored.
Food safety becomes a concern during outages, as perishable items may reach unsafe temperatures. MSU Extension said that food in refrigerators should be inspected carefully after an outage, emphasizing that “the loss of power can cause food stored in the refrigerator to reach unsafe temperatures, increasing the risk for foodborne illness.” The United States Department of Agriculture advises keeping refrigerator doors closed to maintain cold temperatures, which helps keep food safe for up to four hours without power.
According to MSU Extension, once electricity returns, it is best to use an appliance thermometer to check if the refrigerator temperature remains at or below 40 degrees Fahrenheit. The USDA recommends keeping any food if the air temperature inside is still at or below this threshold but discarding anything exposed to higher temperatures for more than two hours. Additionally, MSU Extension suggests checking best-by and use-by dates and cleaning refrigerators using guidelines from both the Centers for Disease Control and USDA.
The organization warned that “perishable food such as meat, poultry, seafood, milk and eggs that are not properly refrigerated may cause a foodborne illness if consumed,” even if cooked thoroughly. They advise erring on the side of caution: “When in doubt, throw it out.” To prepare for future outages, MSU Extension recommends having appliance thermometers in place and maintaining insulated coolers with gel packs ready.
The College of Agriculture and Natural Resources at Michigan State University addresses challenges in food safety through education and outreach across Michigan via research centers and extension services; it reported an enrollment of 3,735 students with over 340 scientists engaged in research during fall 2021 according to its official website.
Looking ahead, MSU Extension encourages residents to follow established guidelines from federal agencies such as USDA during emergencies involving loss of refrigeration. These steps are intended to help prevent illnesses related to spoiled foods.



