A "bomb cyclone" storm that bloated rivers as it roared through much of the Midwest combined with spring snowmelt Sunday to drive some Midwest rivers to record levels and force evacuation of hundreds of homes. At least two deaths were blamed on flooding. Two other men have been missing for days.Some areas must brace for more rain Tuesday, forecasters said. Tuesday's storm won't match last week's "bomb cyclone" that triggered heavy snow, howling winds and several tornadoes, AccuWeather Meteorologist Jim Andrews said. But he said there is the potential for up to another inch of rain on areas that have no place to put the water."That could trigger new or aggravate problems if that rain targets the areas hit hardest by the flooding," he said.The governors of Nebraska, Iowa and Wisconsin have declared states of emergency. Roads and highways were closed.