INDIANAPOLIS (AP) — Indiana’s average gas price soared Wednesday to nearly $4.16 a gallon, putting the state some 50 cents above the national average in a surge one economist blamed on “a perfect storm of refinery outages.”

The website Gasbuddy.com said Indiana’s average price of a gallon of unleaded regular gas was about $4.16 Wednesday afternoon, compared with the national average of about $3.64 a gallon. Indiana’s highest average gas price was set in May 2011, when it reached $4.26 a gallon, the website states.