Hurricane Harvey (2017)

Harvey produced the highest rainfall total ever recorded from a single tropical cyclone in the United States. The official US record stands at 60.58 inches at Nederland, Texas (just south of Beaumont), with multiple stations across southeast Texas exceeding 50 inches over the August 25–30 period. The Houston metro area received 30 to 50 inches across most of its land area in just five days.

Harvey's movement after landfall was determined by an unusual atmospheric setup in which the steering currents — the mid-level winds that normally carry a storm along — broke down to near-zero. A weak ridge over the southern Plains and a weak trough over the Gulf left Harvey with no clear steering, and it executed a slow loop just inland of the central Texas coast for nearly four days before weak flow toward the east-northeast finally pulled the system away.

The NHC official report attributes 103 deaths to Hurricane Harvey, with 68 of those classified as direct (mostly drowning) and 35 indirect (post-storm). The figure is far lower than would be expected for a storm of this severity because of effective evacuation in the immediate landfall zone and substantial residential elevation in Houston flood-prone areas.

Harvey caused approximately $125 billion in damage in 2017 dollars — tied with Hurricane Katrina as the costliest tropical cyclone in US history. The figure adjusted to 2024 is approximately $158 billion. Most of the damage was inland flooding, not coastal wind, distinguishing Harvey from typical hurricanes.