South Florida’s Coastal Flooding caused by King tides, Hurricane debris, Full moon

Street Flooding

Thursday night’s full moon helped lead to South Florida’s highest tides of 2017.

Since storm debris from Hurricane Irma is still clogging drains, and showers and strong winds churned along with king tides, the mix has made for some of the worst coastal flooding in years.

Breaking Records

According to data from June through September of this year, South Florida Water Management District’s region received an average of 44.19 inches of rain — the highest total for the period in 86 years of record keeping.

Dania Beach residents and commuters witnessed sea water breech the natural and man-made barriers in order to flood yards and spill over roadways. Areas of Fort Lauderdale and Delray Beach saw similar results.

While the numbers for South Florida are record-breaking, they can not compare to the enormous amounts collected on Florida’s southwest coast. The Irma-pummeled coastline saw the heaviest rainfall with totals more than the basin gets in a typical year – 63.48 inches, almost 27.5 inches above the historical average.

King Tides

King tides, which are simply the highest tides, are regularly seen in the fall as an alignment of the sun and moon creates a stronger gravitational pull. The full “harvest moon” present Thursday, aided with the massive tides.

More Rain Coming

Forecasters are calling for additional rain showers to continue throughout the weekend. The National Weather Service predicts South Florida could add several more inches to the already staggering totals by the beginning of next week. Miami could get even more rain within that time-frame.

The high water tables coupled with continuing showers will likely lead to twice daily flooding along coastal areas, in conjunction with the tides.

Clearing Debris

City crews are working to clear debris still lingering from Hurricane Irma, especially in the most vulnerable areas. The vegetation is blocking storm drains and damming water which leads to further flooding.



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