Houston faces rising flood risk as rainfall intensity climbs

A new study by Climate Central finds that rainfall intensity in Houston has increased by 22% since 1970, raising the likelihood of street and flash flooding. The research links the trend to a warming atmosphere that can hold more water vapor, noting that a 1 °F rise can boost atmospheric moisture by 4%. Heavy storms in the region can already produce up to 6 inches of rain per hour, and the added intensity could push total rainfall from a two‑hour storm to nearly 5 inches, increasing flood hazards in the city’s clay soils and urban sprawl.

A local weather forecast for Thursday, June 25, shows typical summer heat in Houston, with highs near 91 °F (33 °C) and a heat index up to 104 °F (40 °C). While rain probability is low for the day, the city’s broader climate context includes high humidity, occasional severe weather, and a moderate risk of natural disasters such as hurricanes, flooding, and occasional tornadoes.