(CBS News) – Gas prices are starting to zoom higher, jumping more than 20 cents overnight in some parts of the country this week.
Residents of Bay City, Michigan, saw gas prices soar to $2.32 a gallon Wednesday from $2.04 the day before, according to GasBuddy.com. Two cities in Ohio — Cincinnati and Columbus — saw prices jump 22 cents over the same period.
States that saw dramatic increases overnight include Indiana, Kentucky and Illinois, although Michigan and Ohio were the hardest hit.
The national average for a gallon of gas was $2.15 Thursday, up four cents from the day before and 11 cents in a week. Gas prices had dropped for a record 123 days in a row to $2.03 a gallon on Jan. 26, but have been moving up since then.