TRENTON, N.J. — Motorists continue to see sharply higher prices at the pumps in New Jersey, thanks to Hurricane Harvey.

AAA Mid-Atlantic says the average price of a gallon of regular gas in the state on Friday was $2.79. That’s up 24 cents from last week.

Motorists were paying $1.99 for gas at this time last year. A 23-cents-per-gallon gas tax increase went into effect Nov. 1.

The national average gas price Friday was $2.67, up 15 cents from last week. That’s also higher than the national average from a year ago, when motorists were paying $2.19.

The price spikes are mainly due to damage caused by the devastating storm that knocked out refineries along the Texas Gulf Coast. But officials also warn that Hurricane Irma could impact refineries, pipeline and supply distribution.