Gas prices have gone up by 13 cents per gallon since this time last month but are still down by nearly 40 cents compared to this time last year. The national average fuel price is about $3.22, with Lubbock, Texas, seeing the cheapest metro-area prices at $2.63 and Napa, California, with the most expensive at $5.29.

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

We tend to see these big weekly price spikes … at least once during the spring months since gasoline production can fluctuate greatly during refinery maintenance season,” said