From the National Weather Service in Miami as of 5:56 a.m. ET:
The record daily rainfall for Dec. 4th has already been reached at Miami today. So far, 2.31 inches of rain has been recorded at the Miami International Airport since midnight. This breaks the record rainfall for December 4th… previously 2.29 inches set in 1997. Additional rainfall will occur today which will only add to this daily total.