Traders responded last evening to the South American weather situation by pushing soybean and soymeal futures prices sharply higher in heavy trading volume. This carried over into the day session, which saw March soybeans up 29.25 cents at their daily high of $10.75. General Comments It takes the next weather market to remind us how volatile they can be, and we appear to be in the next one now. More heavy rainfall over portions of Argentine soybean and corn areas has exacerbated already existing flooding that threatens to wash out planted fields and prevent or at least delay farmers from seeding unplanted land. By ironic contrast, crop areas in southern Buenos Aires and La Pampa are plagued by drought. The weather is likely to be very dry...