People wade through high water in front of the Superdome in New Orleans, Louisiana, in 2005. Hurricane Katrina forced 20,000 people to take refuge in the stadium. | Mark Wilson/Getty Images

Hurricane season starts in June.

Without proper planning, the threat of hurricanes combined with Covid-19 is a recipe for disaster.

Think about how, when Hurricane Katrina hit New Orleans in 2005, around 20,000 people took refuge in the Superdome stadium. By their very nature, hurricanes force people to gather close together in shelters, at treatment locations, and during evacuations — at much higher numbers and densities than the CDC recommends for countering a Covid-19 outbreak. And vulnerable populations such as residents of senior care facilities and individuals with disabilities are particularly affected by both hurricanes and infectious diseases.

The Atlantic hurricane season starts on June 1, and every state and territory on