The Inavale 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.
82° on Nov. 15, 2025, the hottest reading for this week of the year since 1894. Next is 81° in 2016.
Inavale’s center stands about 1,740 ft above sea level. Within three miles the land runs from 1,710 ft to 1,920 ft, a difference of 210 ft: rolling country. The highest named summit within 15 miles is Lookout Mountain, about 2,040 ft, 14 miles west-southwest.
Under the town center the state geologic map shows Niobrara Formation (limestone, shale), 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 51×. 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, shale. Age: Late Cretaceous, 66 to 100 million years old. About 17 mi of the line.
Siltstone-mudstone, conglomerate-sandstone. Age: Miocene, 5.3 to 23 million years old. About 4 mi of the line.
Silt. Age: Pleistocene to Holocene, less than 2.6 million years old. About 3 mi of the line.
Shale, limestone. Age: Late Cretaceous, 66 to 100 million years old. About 0.3 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 Inavale reaches the Gulf of America by way of Spring Creek, the Republican, the Kansas, the Missouri and the Mississippi: about 1,900 river miles.
1,170 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Inavale; river miles along the main stem, rounded.
Inavale has a hot-summer humid continental climate. Summer afternoons average 91° in July; winter nights fall to about 12° in January. A normal year brings about 19 inches of snow; with the rain, that comes to about 26 inches of water.
On November 14 Inavale normally reaches 53° and falls to 25°. The record high is 79°, in 1999; the record low −3°, in 1986. The most rain on this date, 1.14 in, fell in 1926.
Normals 1991–2020 and records since 1894 at Red Cloud, 7 miles east. NOAA, through RCC-ACIS.