Heavy overnight rain flooded roads across the Aventura, Sunny Isles Beach and Golden Beach area Wednesday.

Radar estimated 3 to 4 inches of rain fell along the coast from northern Miami-Dade to southern Broward since midnight, CBS News Miami reported. Flood advisories were issued overnight and expired by 6:30 a.m., but water lingered on streets well into the morning commute. It was the second flooding episode to hit the corridor in less than a week.

The National Weather Service in Miami posted a warning at 5:15 a.m. on X, reporting that hours of heavy rainfall had caused water to pool on roadways across Miami-Dade and Broward counties. The agency urged drivers to use extra caution.

No serious injuries were reported.

Crashes and road closures slow the morning commute

The downpour slowed traffic across the region. NBC 6 South Florida reported crashes on Interstate 595 in Broward, the Dolphin Expressway in Miami-Dade and Florida's Turnpike in both counties. None appeared to cause serious injuries, but blocked lanes added to delays. In Hallandale Beach, authorities closed roads and told residents to follow posted barricades.

Farther south in North Miami, flooding remained along Northeast 141st Street off Memorial Highway hours after the rain stopped, according to Local 10. Residents there said past experience suggested it could take days for the water to be pumped out.

No specific road closures or official statements from Aventura police, Sunny Isles Beach police or Golden Beach police had been released as of Wednesday morning. On Friday, Aventura police closed 191st Street from Biscayne Boulevard to 29th Avenue after a similar downpour, as previously reported.

Stalled low-pressure system fuels repeated flooding

The flooding stems from a persistent low-pressure system pumping tropical moisture into the region. Weather service meteorologist Sammy Hadi warned Monday that 2 to 6 inches of rain were likely over the following seven days, with a worst-case scenario of 6 to 15 inches, the Miami Herald reported.

Fort Lauderdale bore the brunt of the broader pattern. The weather service reported at 8:30 a.m. Wednesday that the city had recorded 20.75 inches of rain so far in September, shattering its all-time September record. The average for the month is 8.61 inches.

Drier weather expected by the weekend

CBS News Miami reported skies were expected to clear Wednesday afternoon as dry air moved in from the north. NBC 6's forecast showed rain chances dropping to 50% Thursday and 30% by Saturday, with highs near 89 degrees.

Residents who encounter flooded roads should not attempt to drive through standing water. To report flooding or road hazards, contact your local police department's nonemergency line.