The Dunmor 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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10° on Nov. 13, 2019, the coldest reading for this week of the year since 1893. Next is 11° in 1894.
Dunmor’s center stands about 580 ft above sea level. Within three miles the land runs from 420 ft to 700 ft, a difference of 280 ft: rolling country. The highest named summit within 15 miles is Tan Knob, about 760 ft, 7 miles east-southeast.
Under the town center the state geologic map shows Caseyville Formation (sandstone), from the Carboniferous, 299 to 324 million years old.
The section below crosses 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 45×. 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. Age: Carboniferous, 299 to 324 million years old. About 15 mi of the line.
Siltstone. Age: Carboniferous, 299 to 324 million years old. About 5 mi of the line.
Shale. Age: Carboniferous, 324 to 359 million years old. About 3 mi of the line.
Sand, silt. Age: Pleistocene to Holocene, less than 2.6 million years old. About 0.9 mi of the line.
Limestone, sandstone. Age: Carboniferous, 324 to 359 million years old. About 0.5 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 Dunmor reaches the Gulf of America by way of Jockys Branch, the Mud River, the Green River, the Ohio and the Mississippi: about 1,300 river miles.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Dunmor; river miles along the main stem, rounded.
Dunmor has a humid subtropical climate. Summer afternoons average 88° in July; winter nights fall to about 26° in January. About 54 inches of rain fall in a normal year.
On November 14 Dunmor normally reaches 58° and falls to 36°. The record high is 79°, in 1978; the record low 10°, in 2019. The most rain on this date, 2.31 in, fell in 1957.
Normals 1991–2020 and records since 1893 at Russellville, 16 miles south-southeast. NOAA, through RCC-ACIS.
