The Aplin 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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88° on Nov. 16, 2016, the hottest reading for this week of the year since 1939. Next is 86° in 1955.
Aplin’s center stands about 300 ft above sea level. Within three miles the land runs from 290 ft to 970 ft, a difference of 680 ft: hilly country. The highest named summit within 15 miles is Smith Pinnacle, about 1,880 ft, 14 miles south-southwest.
The section below crosses 9 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 17×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, shale. Age: Carboniferous, 299 to 324 million years old. About 7 mi of the line.
Coarse-detrital, fine-detrital. Age: Holocene, less than 12,000 years old. About 5 mi of the line.
Sandstone, shale. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.
Sandstone, shale. Age: Carboniferous, 299 to 324 million years old. About 2 mi of the line.
Black-shale, sandstone, siltstone. Age: Carboniferous, 324 to 359 million years old. About 2 mi of the line.
Sandstone. Age: Carboniferous, 299 to 324 million years old. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 3 smaller units along the line are not listed.
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 Aplin reaches the Gulf of America by way of Rock Creek, the Fourche LaFave, the Arkansas and the Mississippi: about 810 river miles.
Lake on the way: Murray Lake.
600 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Aplin; river miles along the main stem, rounded.
Aplin has a humid subtropical climate. Summer afternoons average 94° in July; winter nights fall to about 31° in January. About 54 inches of rain fall in a normal year, with about 3 inches of snow.
On November 14 Aplin normally reaches 64° and falls to 40°. The record high is 86°, in 1955; the record low 13°, in 1986. The most rain on this date, 1.26 in, fell in 1947.
Normals 1991–2020 and records since 1939 at Nimrod Dam, 10 miles west, 180 ft higher. NOAA, through RCC-ACIS.
