California gas prices rose for the second consecutive week and reached an average of $4.25 per gallon of regular fuel on Monday, up from last week's price of $4.22 per gallon, according to the U.S. Energy Information Administration.

Gasoline prices hopped higher in the Bay Area in the wake of an explosion and fire that knocked an East Bay refinery offline — although experts say it's too soon to know the precise price impact. An explosion and fire at the Martinez Refining Co.

Here's a look at how weekly regional gas prices changed in Gulf Coast region last week compared with the week prior.