Major floods are not a matter of if but when

Why it matters: Eta was a warning shot, according to a series of scary special reports from the Tampa Bay Times.

• In 30 years, the same storm surge will flood two to five times as many properties — between 17,000 and 40,000.

Flashback: Eta passed at high tide, breaching seawalls and sending floodwater into areas that don't normally flood.

• But with global-warming caused sea-level rise, even low tides are getting higher.

The big picture: Times reporters Langston Taylor and Zachary Sampson worked with scientists at the National Hurricane Center to show how much more of the city would flood if a storm identical to Eta hit after sea levels rise.

🌀 The bottom line: Tampa is more vulnerable to hurricanes than other parts of Florida. It won't take a big Category 5 storm to cause mass hardship here.

• Even a sloppy Category 1 or 2 could be devastating.

Read the series.