Oil prices steadied on Friday after almost a week of sharp rises as Hurricane Irma, one of the most powerful storms in a century, drove towards Florida after tearing through the Caribbean. Irma is the second major hurricane to approach the United States in two weeks and has already killed 14, flattening whole islands. Its predecessor, Harvey, shut a quarter of U.S. refineries and 8 percent of U.S. oil production. “Hurricanes can have a lasting effect on refinery and industry demand,” said Eugen Weinberg, head of commodities research at Commerzbank in Frankfurt. “The impact of the forces of nature on U.S. oil production should not be overestimated – nor should their impact on demand be underestimated.”

Global benchmark Brent crude topped $60 a barrel last month for the first time since July 2015, while West Texas Intermediate, the U.S. marker, is set for the highest close in two years as Saudi Arabia and Russia signaled support for extending supply cuts well into 2018. The market was also buoyed by conflict between the Iraqi central government and Kurdish forces that threatened crude production from northern fields in the OPEC nation. “U.S. stock draws have been leading and continue to lead the market higher,” said Olivier Jakob, managing director at Petromatrix GmbH in Zug, Switzerland. Click Read More below for additional information.

Oil fell on Wednesday as investors took profit on a rally the day before to this year’s highs after a report showed a surprisingly large increase in U.S. crude inventories. June Brent crude futures LCOc2 were last down 27 cents on the day at $69.19 barrel by 1135 GMT, while the May contract LCOc1, which expires on Thursday, was down 16 cents at $69.95. WTI futures CLc1 fell 40 cents to $64.85 a barrel.