The Alexis 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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−2° on Nov. 17, 1959, the coldest reading for this week of the year since 1893. Next is 4° in 1986.
Alexis’s center stands about 700 ft above sea level. Within three miles the land runs from 630 ft to 760 ft, a difference of 130 ft: gently rolling country.
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 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale, sandstone. Age: Early Pennsylvanian to Middle Pennsylvanian, 307 to 324 million years old. About 16 mi of the line.
Shale, sandstone, coal. Age: Middle Pennsylvanian to Late Pennsylvanian, 304 to 315 million years old. About 4 mi of the line.
Shale. Age: Middle Devonian to Late Devonian, 359 to 388 million years old. About 3 mi of the line.
Limestone. Age: Middle Devonian, 384 to 394 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 Alexis reaches the Gulf of America by way of Middle Henderson Creek, Henderson Creek and the Mississippi: about 1,420 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Alexis; river miles along the main stem, rounded.
Alexis has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 15° in January. A normal year brings about 26 inches of snow; with the rain, that comes to about 39 inches of water.
On November 14 Alexis normally reaches 50° and falls to 31°. The record high is 76°, in 1971; the record low 7°, in 1940. The most rain on this date, 1.81 in, fell in 1926.
Normals 1991–2020 and records since 1893 at Monmouth, 9 miles south-southwest. NOAA, through RCC-ACIS.
