Memphis, TN

The 2011 Mississippi River flood crested at 47.87 feet at Memphis—the highest level since 1937—flooding areas along the river's edge and renewing attention to the city's enduring relationship with the continent's largest river system. Memphis' heat score of 66 sits at the 76th national percentile—moderate—but the Delta heat season of 2023 demonstrated that Gulf-influenced humidity extends the effective heat burden well past what dry-climate metrics capture. The city's flood score of 55, at the 64th national percentile, reflects real river and stormwater exposure that the Mississippi's scale amplifies. Our read: most Memphis buyers underweight the New Madrid Seismic Zone. The earthquake score of 47, at the 54th national percentile, is low—but the New Madrid zone is one of the most seismically active regions in the eastern United States, and a significant event would stress building stock and infrastructure not designed with seismic resilience in mind. That is a low-frequency, high-consequence variable that belongs in the buyer risk budget even if it does not drive annual insurance costs today. Annual premiums range from $1,400 to $3,200—moderate—with heat and older housing systems representing the most persistent carrying-cost pressure. Midtown's older building stock and tree-loss risk after storm events create maintenance demands that list prices do not consistently capture. Germantown fringe buyers can treat the seismic question as theoretical. Memphis is the US city where a geologically significant seismic event would most directly test the gap between theoretical and actual building performance. That gap deserves to be measured before the test, not discovered during it.

— Open Data Collective