The eastern Pacific's newest tropical system is currently churning out at sea, but Rosa is on track to later cause flooding across the American Southwest.Rosa developed into a hurricane on Wednesday, and is expected to swiftly reach major hurricane status by the end of the week."The track of Rosa will keep it well west of Mexico through the weekend, meaning the primary impact to land through the weekend will be limited to rough surf and rip currents along the western coast of Mexico," said AccuWeather Senior Meteorologist Dan Pydynowski. Fortunately, the system . . .