NEW YORK — Commuters and day-trippers may do a double-take at the gas station after the biggest one-day pop in pump prices in nearly two years.
The nationwide average price for a gallon of gas jumped 4 cents overnight to $3.46 a gallon, according to AAA. That makes a three-day gain of 10 cents and, for the first time in 2013, gas now costs more than it did a year ago.
The biggest increases happened out West. The average price in California rose nearly 6 cents Friday to $3.82 a gallon.
The largest previous one-day gain occurred on March 4, 2001, when the average price jumped by 4.4 cents.
Overall, gas prices are now up 17 cents this year. The main reason is a 6 percent increase in the price of oil. But a heavy schedule of January maintenance at West Coast refineries has contributed to sharply higher prices. Meanwhile, low supplies of gas have pushed prices higher on the East Coast.
Oil rose Friday as traders took their cue from the stock market after some initial concern about the latest report on U.S. employment.
U.S. employers added 157,000 jobs in January, and hiring was much stronger at the end of 2012 than previously thought, the Labor Department reported Friday. There was one negative sign: The unemployment rate rose to 7.9 percent from 7.8 percent in December.
Oil dropped about $1 right after the report was released. It turned around as U.S. stock markets opened higher. Also, a separate report showed U.S. manufacturing activity grew at a faster pace in January, which is a good sign for oil demand.
Benchmark oil for March delivery rose 22 cents to $97.71 a barrel in early afternoon trading on the New York Mercantile Exchange.
Brent crude, used to price international varieties of oil, was up $1.33 to $116.88 a barrel on the ICE Futures exchange in London. A suicide bomber detonated an explosive Friday in front of the U.S. Embassy in Ankara, adding to concerns about possible supply disruptions due to the conflicts in the Middle East.
In other energy futures trading on Nymex:
— Wholesale gasoline rose 2 cents to $3.05 per gallon.
— Natural gas fell 2 cents to $3.31 per 1,000 cubic feet.
— Heating oil gained 4 cents to $3.16 a gallon.
Pamela Sampson in Bangkok and Pablo Gorondi in Budapest contributed to this report.