Oil futures ended sharply higher on Friday, as fresh U.S. sanctions on Russia’s oil sector looked to threaten global supplies and as winter storms in the U.S. were expected to boost demand for heating fuels.

Crude prices are having one of their best days in a year, rallying as much as 5% amid concerns that icy weather in the oil patch will crimp domestic supply, while tighter sanctions on Russia and Iran may eliminate barrels from global markets.

Oil prices rallied nearly 3% to their highest in three months on Friday as traders braced for supply disruptions from the broadest U.S. sanctions package targeting Russian oil and gas revenue. President Joe Biden's administration imposed fresh sanctions targeting Russian oil producers,