The Ethridge 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.
Sunny
Mostly sunny; warmer
Sunny
Partly cloudy
Mostly sunny
Mostly sunny
Mostly sunny
14° on Nov. 13, 2019, the coldest reading for this week of the year since 1954. Next is 15° in 1968.
Ethridge’s center stands about 980 ft above sea level. Within three miles the land runs from 900 ft to 1,040 ft, a difference of 140 ft: gently rolling country. The highest named summit within 15 miles is Flanigan Hill, about 1,200 ft, 14 miles northeast.
Under the town center the state geologic map shows St. Louis Limestone and Warsaw Limestone, from the Carboniferous, 324 to 359 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 50×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Chert. Age: Carboniferous, 324 to 359 million years old. About 17 mi of the line.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 5 mi of the line.
Shale, limestone. Age: Ordovician, 445 to 487 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 Ethridge reaches the Gulf of America by way of Little Shoal Creek, Shoal Creek, the Tennessee, the Ohio and the Mississippi: about 1,350 river miles.
Lakes on the way: White Lake (historical) and Pickwick Lake.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Ethridge; river miles along the main stem, rounded.
Ethridge has a cold desert climate. Summer afternoons average 88° in July; winter nights fall to about 28° in January. Barely 0.0 inches of rain fall in a normal year.
On November 14 Ethridge normally reaches 61° and falls to 37°. The record high is 80°, in 1999; the record low 19°, in 1986. The most rain on this date, 1.45 in, fell in 1957.
Normals 1991–2020 and records since 1954 at Lawrenceburg Filt Plant, 6 miles south-southwest, 110 ft lower. NOAA, through RCC-ACIS.
