The Atwood 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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9° on Nov. 13, 2019, the coldest reading for this week of the year since 1883. Next is 10° in 2022.
Atwood’s center stands about 450 ft above sea level. Within three miles the land runs from 360 ft to 530 ft, a difference of 170 ft: gently rolling country. The highest named summit within 15 miles is Marshall Hill, about 660 ft, 12 miles east.
Under the town center the state geologic map shows Loess (silt), from the Quaternary, less than 2.6 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 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.
Silt. Age: Quaternary, less than 2.6 million years old. About 18 mi of the line.
Sand. Age: Tertiary, 2.6 to 66 million years old. About 5 mi of the line.
Fine-detrital, coarse-detrital. Age: Quaternary, less than 2.6 million years old. About 0.8 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 Atwood reaches the Gulf of America by way of the Rutherford Fork Obion, the Obion and the Mississippi: about 950 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Atwood; river miles along the main stem, rounded.
Atwood has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 28° in January. About 56 inches of rain fall in a normal year, with about 3 inches of snow.
On November 14 Atwood normally reaches 62° and falls to 37°. The record high is 81°, in 1931; the record low 12°, in 2019. The most rain on this date, 1.90 in, fell in 1915.
Normals 1991–2020 and records since 1883 at Milan Experiment Station, 4 miles southwest. NOAA, through RCC-ACIS.
