The Milan 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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78° on Nov. 11, 2020, the hottest reading for this week of the year since 1894. Next is 76° in 1909.
Milan’s center stands about 670 ft above sea level. Within three miles the land runs from 590 ft to 760 ft, a difference of 170 ft: gently rolling country.
Under the town center the state geologic map shows Ohio Shale (shale, black-shale), from the Devonian, 359 to 422 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 41×. 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, black-shale. Age: Devonian, 359 to 422 million years old. About 9 mi of the line.
Sandstone, shale. Age: Devonian, 359 to 422 million years old. About 7 mi of the line.
Limestone. Age: Devonian, 359 to 422 million years old. About 3 mi of the line.
Limestone. Age: Devonian, 359 to 422 million years old. About 2 mi of the line.
Shale, siltstone, sandstone. Age: Devonian to Carboniferous, 324 to 422 million years old. About 2 mi of the line.
Shale, limestone. Age: Devonian, 359 to 422 million years old. About 0.7 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 Milan reaches Lake Erie by way of the Huron: about 13 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Milan; river miles along the main stem, rounded.
Milan has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 19° in January. A normal year brings about 33 inches of snow; with the rain, that comes to about 40 inches of water.
On November 14 Milan normally reaches 50° and falls to 34°. The record high is 76°, in 1909; the record low 10°, in 2019. The most rain on this date, 2.35 in, fell in 1955.
Normals 1991–2020 and records since 1894 at Norwalk Wwtp, 2 miles south-southwest. NOAA, through RCC-ACIS.
