U.S. wholesale prices soared last month by the largest amount in more than 15 years, reflecting a hurricane-spurred surge in energy prices, while so-called core inflation pressures also appeared to gain momentum.

The U.S. Labor Department reported today that the producer-price index jumped 1.9% in September led by surging prices for gasoline, natural gas and home heating oil after the widespread shutdowns of refineries and oil platforms along the U.S. Gulf Coast. That’s the biggest jump since January 1990.

Food prices, which had been declining, posted the biggest increase in 11 months as the price of eggs shot up by a record amount.

The uptick in inflation wasn’t confined to the typically volatile food and energy sectors, however: excluding those costs, inflation posted an increase of 0.3% after showing no increase at all in August.

The news followed a report Friday that consumer prices had risen by 1.2% in September, the biggest one-month increase in a quarter-century, as gasoline prices at the pump climbed by a record 17.9%. The core rate of inflation at the consumer level rose by only 0.1%.

Raw-materials prices rose 10.2% in September, up from a 2.3% rate in August, while semi-processed goods rose 2.5%, higher than August’s 0.7% increase.

Prices for finished goods in the energy sector shot up 7.1% last month, after rising 3.7% in August. It was the biggest jump since October 1990.

Gasoline last month rose 12.7%. Residential natural gas was up 9%.