The document summarizes the reaction of markets to a recent agreement by European leaders to address the sovereign debt crisis. It notes that stock prices rose significantly as investors were relieved by the three-point deal involving Greek debt relief and boosting the bailout fund. However, details remain unclear and challenges loom with the U.S. debt panel deadline approaching. Overall investors were in a relief rally but surprises can still occur as with sudden market moves or unexpected weather, much like the forecasting abilities of analysts and meteorologists.