The Walls 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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85° on Nov. 13, 1955, the hottest reading for this week of the year since 1872. Next is 84° in 1958.
Walls’s center stands about 210 ft above sea level. Within three miles the land runs from 190 ft to 330 ft, a difference of 140 ft: gently rolling country.
Under the town center the state geologic map shows Alluvium (fine-detrital, coarse-detrital), from the Holocene, less than 12,000 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 64×. 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: Eocene, 34 to 56 million years old. About 12 mi of the line.
Coarse-detrital, fine-detrital. Age: Holocene, less than 12,000 years old. About 6 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 5 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 Walls reaches the Gulf of America by way of Lake Cormorant Bayou, the Coldwater, the Tallahatchie, the Yazoo and the Mississippi: about 780 river miles.
450 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Walls; river miles along the main stem, rounded.
Walls has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 33° in January. About 55 inches of rain fall in a normal year, with about 3 inches of snow.
On November 14 Walls normally reaches 63° and falls to 43°. The record high is 81°, in 1999; the record low 20°, in 1940. The most rain on this date, 3.17 in, fell in 1915.
Normals 1991–2020 and records since 1872 from the Memphis Area threaded record (Memphis International Airport, 14 miles northeast). NOAA, through RCC-ACIS.
