The Aurora 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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76° on Nov. 11, 2020, the hottest reading for this week of the year since 1893. Next is 74° in 1911.
Aurora’s center stands about 2,630 ft above sea level. Within three miles the land runs from 2,070 ft to 3,180 ft, a difference of 1,110 ft: steep hill country. The highest named summit within 15 miles is Brown Mountain, about 3,740 ft, 15 miles southeast.
The section below crosses 8 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 9×. 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, sandstone. Age: Devonian, 359 to 422 million years old. About 7 mi of the line.
Shale, siltstone, sandstone. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.
Sandstone. Age: Carboniferous, 324 to 359 million years old. About 3 mi of the line.
Shale, sandstone. Age: Devonian, 359 to 422 million years old. About 3 mi of the line.
Sandstone, siltstone, shale. Age: Carboniferous, 299 to 324 million years old. About 2 mi of the line.
Sandstone. Age: Carboniferous, 299 to 324 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. 2 smaller units along the line are not listed.
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 Aurora reaches the Gulf of America by way of Rhine Creek, the Youghiogheny, the Monongahela, the Ohio and the Mississippi: about 2,090 river miles.
970 miles of the trip are on the Ohio.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Aurora; river miles along the main stem, rounded.
Aurora has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 18° in January. A normal year brings about 105 inches of snow; with the rain, that comes to about 51 inches of water.
On November 14 Aurora normally reaches 52° and falls to 30°. The record high is 72°, in 1993; the record low 3°, in 1920. The most rain on this date, 1.25 in, fell in 1972.
Normals 1991–2020 and records since 1893 at Oakland 1 SE, 10 miles northeast, 210 ft lower. NOAA, through RCC-ACIS.
