Flash Flood in Miami-dade County, Florida

A second round of excessive rainfall leading to flash flooding occurred over portions of NE Miami-Dade County on June 12th. An additional 8-15 inches of rain fell on top of the rain that occurred the previous day. Storm surveys after the event indicated water marks as high as 2-3 feet in Aventura on buildings and power poles, and in excess of 12 inches in North Miami.

For both June 11th and 12th events, a total of 34 people required evacuation, mostly from vehicles stalled in deep flood waters. Damage assessments resulted in 160 structures with major damage, and 81 with minor damage across Miami-Dade County.

A maximum 2-day rainfall total of 20 was recorded in Sunny Isles Beach, with 10-20 inches from Miami Shores and Miami Beach to North Miami and Aventura.

Total damage estimate indicated in this event is the combined total of this event and the one from June 11th.

A plume of deep tropical moisture streamed into South Florida during the week of June 10 through 15th as the region remained south of a stationary boundary and in close proximity to a weak tropical disturbance. Multiple mesoscale convective systems developed to the south of this boundary over Central Florida and gradually pivoted southward into South Florida during the morning and afternoon hours of June 11th, 12th, and 13th, 2024. With a very moist and warm atmospheric composition, rainfall rates were efficient and tropical in nature. Storm total rainfall of up to 20 inches occurred across NE Miami-Dade and SE Broward counties, with totals as high as 18 inches in the Big Cypress National Preserve in Collier County. These rainfall totals resulted in major flooding across these areas.