The Advocate reports that Hurricane Ida disrupted barge traffic along the Mississippi, with barges sunk and grain terminals damaged. The Waterways Council says the event was larger than Katrina.
The river was closed for several days, with estimated losses of about $295 million per day.
Halted barge loadings at harvest start cut export capacity and pile up grain in the interior, pressuring cash corn and soybean bids. Freight and barge rates rise on the reduced fleet availability.
Not enough comparable past events yet for a historical read.
After 359 past bearish logistics events, Corn moved a median -0.3% over 5 sessions (44% higher; middle half -1.5% to +1.5%), and -0.5% over 20.
After 297 past bearish logistics events, Soybeans moved a median +0.3% over 5 sessions (54% higher; middle half -1.5% to +1.8%), and +0.7% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.