The Lewellen 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.
Mostly cloudy
Partly cloudy; warmer
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Showers likely
82° on Nov. 12, 1999, the hottest reading for this week of the year since 1913. Next is 82° in 2025.
Lewellen’s center stands about 3,310 ft above sea level. Within three miles the land runs from 3,280 ft to 3,630 ft, a difference of 350 ft: rolling country. The highest named summit within 15 miles is Twin Buttes, about 3,860 ft, 8 miles north-northwest.
Under the town center the state geologic map shows White River Group (clay), from the Early Oligocene to Late Oligocene, 23 to 34 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 35×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Siltstone-mudstone, conglomerate-sandstone. Age: Miocene, 5.3 to 23 million years old. About 19 mi of the line.
Clay. Age: Early Oligocene to Late Oligocene, 23 to 34 million years old. About 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 Lewellen reaches the Gulf of America by way of the North Platte, the Platte, the Missouri and the Mississippi: about 2,160 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 Lewellen; river miles along the main stem, rounded.
Lewellen has a cold semi-arid climate. Summer afternoons average 88° in July; winter nights fall to about 13° in January. A normal year brings about 28 inches of snow; with the rain, that comes to about 18 inches of water.
On November 14 Lewellen normally reaches 52° and falls to 22°. The record high is 80°, in 1990; the record low −12°, in 1940. The most rain on this date, 0.26 in, fell in 1921.
Normals 1991–2020 and records since 1913 at Oshkosh, 12 miles west-northwest. NOAA, through RCC-ACIS.
