PNW Sub Octane Basis Hits 2-Month Low on Supply Relief
6/16 1:47 PM
PNW Sub Octane Basis Hits 2-Month Low on Supply Relief Kristina Davis DTN Refined Fuels Market Reporter MIAMI, FL (DTN) -- Pacific Northwest sub octane regular gasoline basis weakened Tuesday (6/16), falling by 8cts as regional supply concerns continued to ease amid a lack of refinery disruptions across the U.S. West Coast. An offer was heard in the market at a 10cts premium to July NYMEX RBOB futures, bringing the Pacific Northwest sub octane basis to a last indication of a 9.5cts premium, down 8cts from the prior session. This is the lowest level since April 8th of this year, when price was assessed at 7.5cts premium according to DTN data. Major refining facilities along the U.S. West Coast have continued to operate without incident, as no flaring events or unexpected unit shutdowns have emerged, easing the supply-disruption premium that had previously supported gasoline basis values. (c) Copyright 2026 DTN, LLC. All rights reserved.