Gustav will impact oil infrastructure and production levels.

For the 2008 hurricane season, the EIA estimates that mean shut in production will be 20 million barrels. However, the EIA believes that the median shut in production of 11 million barrels is a better representation.
http://tonto.eia.doe.gov/FTPROOT/forecasting/2008_sp_03.pdf

Below is an updated oil production forecast for the USA Gulf of Mexico showing recent hurricane outages.

click to enlarge

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