The Ridgetop 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
Sunny
Mostly sunny
Mostly sunny
Mostly sunny
80° on Nov. 11, 2002, the hottest reading for this week of the year since 1942. Next is 79° in 1955.
Ridgetop’s center stands about 920 ft above sea level. Within three miles the land runs from 550 ft to 940 ft, a difference of 390 ft: rolling country.
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 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 34×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 10 mi of the line.
Shale, limestone. Age: Ordovician, 445 to 487 million years old. About 7 mi of the line.
Chert. Age: Carboniferous, 324 to 359 million years old. About 4 mi of the line.
Limestone. Age: Silurian, 422 to 445 million years old. About 0.6 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 Ridgetop reaches the Gulf of America by way of Pole Bridge Branch, Long Branch, the Sulphur Fork Red, the Red River, the Cumberland, the Ohio and the Mississippi: about 1,220 river miles.
Lake on the way: Bards 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 Ridgetop; river miles along the main stem, rounded.
Ridgetop has a humid subtropical climate. Summer afternoons average 89° in July; winter nights fall to about 27° in January. A normal year brings about 6 inches of snow; with the rain, that comes to about 53 inches of water.
On November 14 Ridgetop normally reaches 59° and falls to 38°. The record high is 77°, in 1999; the record low 15°, in 2019. The most rain on this date, 1.87 in, fell in 1951.
Normals 1991–2020 and records since 1942 at Springfield Experiment Station, 6 miles north-northwest, 180 ft lower. NOAA, through RCC-ACIS.
