The Jumpertown 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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15° on Nov. 13, 2019, the coldest reading for this week of the year since 1895. Next is 17° in 1940.
Jumpertown’s center stands about 630 ft above sea level. Within three miles the land runs from 430 ft to 610 ft, a difference of 180 ft: gently rolling country. The highest named summit within 15 miles is Lebanon Mountain, about 800 ft, 10 miles south-southwest.
Under the town center the state geologic map shows Demopolis chalk, from the Late Cretaceous, 66 to 100 million years old.
The section below crosses 4 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, limestone. Age: Late Cretaceous, 66 to 100 million years old. About 10 mi of the line.
Sand, clay. Age: Late Cretaceous, 66 to 100 million years old. About 7 mi of the line.
Chalk. Age: Late Cretaceous, 66 to 100 million years old. About 5 mi of the line.
Sand, clay. Age: Late Cretaceous, 66 to 100 million years old. About 2 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 Jumpertown reaches the Gulf of America by way of Kings Creek, the Tuscumbia River Canal, the Hatchie, Porters Creek, Cypress Creek and the Mississippi: about 1,000 river miles.
800 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Jumpertown; river miles along the main stem, rounded.
Jumpertown has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 30° in January. About 59 inches of rain fall in a normal year.
On November 14 Jumpertown normally reaches 62° and falls to 38°. The record high is 84°, in 1955; the record low 19°, in 2019. The most rain on this date, 3.64 in, fell in 1957.
Normals 1991–2020 and records since 1895 at Corinth 5 WSW, 15 miles north-northeast, 230 ft lower. NOAA, through RCC-ACIS.
