The Chunchula plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
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5.72 inches of rain fell in two days, the most for this week of the year since records began in 1871. The next wettest, 5.59 inches, fell in 1914.
Chunchula’s center stands about 130 ft above sea level. Within three miles the land runs from 70 ft to 280 ft, a difference of 210 ft: rolling country.
Under the town center the state geologic map shows Miocene Series undifferentiated (sand, clay), from the Miocene to Pliocene, 2.6 to 23 million years old.
The section below crosses 3 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 61×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sand, clay. Age: Miocene to Pliocene, 2.6 to 23 million years old. About 12 mi of the line.
Sand. Age: Holocene, less than 12,000 years old. About 9 mi of the line.
Sand. Age: Pliocene to Pleistocene, less than 5.3 million years old. About 3 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale.
Heights from Copernicus GLO-90 (a surface model: it includes buildings and tree canopy); summits from USGS GNIS; rivers from USGS NHDPlus HR; rock from the USGS State Geologic Map Compilation.
A raindrop that lands in Chunchula reaches Mobile Bay and the Gulf of America by way of Chickasaw Creek and the Mobile: about 30 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Chunchula; river miles along the main stem, rounded.
Chunchula has a humid subtropical climate. Summer afternoons average 91° in July; winter nights fall to about 41° in January. About 67 inches of rain fall in a normal year.
On November 14 Chunchula normally reaches 70° and falls to 48°. The record high is 82°, in 2008; the record low 28°, in 1969. The most rain on this date, 1.55 in, fell in 1929.
Normals 1991–2020 and records since 1871 from the Mobile Area threaded record (Mobile Regional Airport, 16 miles south). NOAA, through RCC-ACIS.
