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The most precipitation to fall in one year was 83.02 inches (2,108.7 mm) which occurred in 1979. Total rainfall in 2017, the year of Hurricane Harvey at IAH in northern Houston, was 79.69; rainfall the month of the storm, August 2017, at IAH totaled 39.11. [22]
Climate data for Houston (Intercontinental Airport), 1991–2020 normals, [a] extremes 1888–present [b]Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Record high °F (°C)
As an ill-defined surface low, a large thunderstorm complex forms near its center that day, which unleashes very heavy rainfall in a 50 mi (80 km) wide band covering a 200 mi (320 km) path from Seguin to north of Houston. The highest rainfall amount reported is from Cheapside, where 18 in (460 mm) falls in a 24‑hour period ending on the ...
The Northern Plains' climate is semi-arid and is prone to drought, annually receiving between 16 and 32 inches (410 and 810 mm) of precipitation, and average annual snowfall ranging between 15 and 30 inches (380 and 760 mm), with the greatest snowfall amounts occurring in the Texas panhandle and areas near the border with New Mexico.
Two-thirds of the bayous and creeks in Harris County experienced 500-year flood events. Houston Intercontinental Airport, which typically receives 46.07 inches (1,170 mm) of rain in a year, experienced 35.7% of its expected total in the first nine days of June. [1] The deluge flooded 95,000 automobiles and 73,000 houses throughout Harris County ...
Specifically, regions to the north and west of the Houston metro have seen 10 to 25 millimetres (0.39 to 0.98 in) of subsidence per year. [140] While oil extraction can cause subsidence, in the Houston-Galveston area, most oil has been extracted from sandstone that has relatively negligible ability to compress once oil has been removed.
The same station recorded 31 in (790 mm) of rain in 12 hours. [20] Rain fell at over 5 in (130 mm) per hour in several places. [21] Flood depths in some locations exceeded those recorded in Hurricane Harvey due to the high rainfall rates. [22] Where rainfall was heaviest, the rainfall total represented a 1-in-1000-year rainfall event. [20]
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 ...