The national average diesel price shot up more than 11 cents per gallon for the week ending Monday, April 2. The reported price is 17.3 cents higher per gallon than a year ago.

Analysts quoted by various media say tension in the Middle East – particularly with Iran – has been a factor in crude oil trading. Domestically, a slight rebound in supply recently has still not caught up with early spring demands, according to other media reports.

The combined average price for on-highway low-sulfur diesel and ultra-low sulfur diesel was $2.790, which was 11.4 cents higher than the previous price of $2.676 reported the previous week by the U.S. Energy Information Administration.

The EIA reported a national average price of $2.751 for low-sulfur diesel, up 11.7 cents from the previous week, while ULSD had an average price of $2.803, up 11.3 cents.

The EIA reports combined averages and separate averages on a national level, while prices for ULSD are further broken down into nine reporting regions.

The Midwest region and the Gulf Coast region had the biggest increases in prices for ULSD – from $2.668 to $2.791 and from $2.639 to $2.762 respectively.

ULSD in the Lower Atlantic region was 11.3 cents higher that it was a week ago at $2.760, while the Central Atlantic region was 11.2 cents higher at $2.818.

The East Coast region had an average diesel price of $2.782, 10.9 cents higher than the previously reported price of $2.673.

ULSD in the Rocky Mountain region was $2.890 per gallon, a 10.2-cent increase from $2.788.

The West Coast region and California region saw lesser increases – 8.2 cents and 7.0 cents respectively. ULSD in the West Coast region was $2.893 per gallon, while California inched closer to $3, averaging $2.939 for the week.