Simplify the following text for a Grade 7 native English-speaking person.
Original: While moving through northwestern Mexico , Hurricane Ismael dropped moderate to heavy rainfall including a state record of 7.76 i in Sinaloa , resulting in the flooding of four municipalities .
Simplified: The storm dropped moderate to heavy rainfall , which reached 7.76 inches ( 197 mm ) in Sinaloa . The heavy rain caused flooding in four municipalities .