just the latest in a string of refinery breakdowns across the country. up in smoke this time, one of california's biggest gas producers, big enough to drive up gas prices at least 25 cents in the next few days, up and down the west coast. >> my husband texted me this morning. said make sure you get gas because of what happened at the gas refinery. >> reporter: so you're filling up to beat the price hike? >> yes. >> reporter: in the midwest it is worse. in michigan, gas shot up an incredible 34 cents in one week after pipeline ruptures between wisconsin and illinois. and equipment problems closed parts of three refineries in illinois and indiana. >> when we see the events happen in such close timing together, the market essentially becomes panicked. >> reporter: illinois has the priciest gas in the nation at $4.09 a gallon. an incredible 30-cent jump in just a week. arizona has it the cheapest now