The U.S. Coast Guard Ohio Valley issued a safety advisory limiting tow sizes on the Upper Mississippi River due to low water, recommending no more than 20 downbound and 25 upbound barges. Mariners were warned of rock pinnacles and missing buoys in several river reaches.
Reduced tow sizes and navigation hazards cut barge capacity and raise per-ton freight costs, widening interior basis for grains moving to the Gulf.
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.