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Hurricane Harvey was a devastating tropical cyclone that made landfall on Texas and Louisiana in August 2017, causing catastrophic flooding and more than 100 deaths. It is tied with 2005's Hurricane Katrina as the costliest tropical cyclone on record, [nb 1] inflicting $125 billion (2017 USD) in damage, primarily from catastrophic rainfall-triggered flooding in Greater Houston and Southeast ...
According to officials from the Harris County Flood Control District, Harvey caused the third '500-year' flood in three years. [146] [147] [148] The National Climate Assessment states: The recent increases in activity are linked, in part, to higher sea surface temperatures in the region that Atlantic hurricanes form in and move through.
For river systems, a 100-year flood is generally expressed as a flowrate. Based on the expected 100-year flood flow rate, the flood water level can be mapped as an area of inundation. The resulting floodplain map is referred to as the 100-year floodplain. Estimates of the 100-year flood flowrate and other streamflow statistics for any stream in ...
Updated maps from Williamson County show an increase of 6,000 structures in the 100-year flood plains. The last information available was from 1994. ... Williamson County has updated its flood ...
A '100-year flood' doesn't mean you'll be flood-free for the next 99 years. Win McNamee/Getty ImagesA 100-year flood, like a 100-year storm, is one so severe it has only a 1% chance of hitting in ...
The total of 39.11 in (993 mm) of rain in August, mostly from Harvey, made that month the wettest ever recorded in Houston, more than doubling the previous record of 19.21 in (488 mm). [46] Besides Houston, nearly the entirety of southeastern Texas received at least 3 ft (910 mm) of rain, [ 2 ] and an estimated 25–30 percent of Harris County ...
• San Jacinto County, 60 miles north of Houston: About 100-200 homes are affected by floodwaters and mandatory evacuations are in effect. The event is “85% worse than Hurricane Harvey ...
In St. Tammany Parish, surface runoff from flash flooding causes some rivers to exceed flood stage. [16] Damage in Louisiana totaled to $150,000 (2002 USD, $260,000 2024 USD). September 5, 2002 – Tropical Storm Fay develops offshore the Louisiana coast before making landfall in Texas as a moderate tropical storm.
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