Thunderstorms in the Inland Empire Monday caused flooding and prompted rescue efforts, the day after flash floods in the region caused similar damage.The National Weather Service initially issued a Flash Flood Warning in Indio, Palm Desert and Coachella until 10 a.m., a tweet from the agency stated. The warning was later extended until noon. A Flash Flood Watch was scheduled to remain in effect through Monday evening for the mountain and desert areas of Riverside and San Bernardino counties, according to the weather service.