The Ellenboro 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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Mostly sunny; warmer
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−3° on Nov. 17, 1959, the coldest reading for this week of the year since 1893. Next is −1° in 1986.
Ellenboro’s center stands about 730 ft above sea level. Within three miles the land runs from 690 ft to 1,040 ft, a difference of 350 ft: rolling country. The highest named summit within 15 miles is Platte Mounds, about 1,470 ft, 11 miles east.
Under the town center the state geologic map shows Prairie du Chien Group (dolostone), from the Early Ordovician, 471 to 487 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 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.
Dolostone. Age: Ordovician, 445 to 487 million years old. About 14 mi of the line.
Sandstone. Age: Ordovician, 445 to 487 million years old. About 8 mi of the line.
Dolostone. Age: Early Ordovician, 471 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 Ellenboro reaches the Gulf of America by way of the Platte and the Mississippi: about 1,590 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Ellenboro; river miles along the main stem, rounded.
Ellenboro has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 9° in January. A normal year brings about 37 inches of snow; with the rain, that comes to about 38 inches of water.
On November 14 Ellenboro normally reaches 44° and falls to 28°. The record high is 72°, in 1999; the record low 2°, in 1986. The most rain on this date, 0.81 in, fell in 1902.
Normals 1991–2020 and records since 1893 at Lancaster 4 WSW, 9 miles west-northwest, 310 ft higher. NOAA, through RCC-ACIS.
