Unplanned refinery outages can have noticeable effects on liquid fuel markets, disrupting supplies of gasoline and distillate. In late August, unplanned outages occurred at two refineries on the East Coast, Petroleum Administration for Defense District (PADD) 1, affecting a significant portion of PADD 1 gasoline production capacity. However, unlike similar incidents on the West Coast (PADD 5) and in the Midwest (PADD 2), there was no significant movement in gasoline prices as a result of the outages. How a region is supplied, what alternative supply options exist, and the costs and lead times for those options will largely determine to what extent prices react to unplanned outages.