The Twinsburg 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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75° on Nov. 11, 2020, the hottest reading for this week of the year since 1948. Next is 68° in 2022.
Twinsburg’s center stands about 990 ft above sea level. Within three miles the land runs from 960 ft to 1,190 ft, a difference of 230 ft: rolling country. The highest named summit within 15 miles is Derthick Hill, about 1,390 ft, 15 miles east.
Under the town center the state geologic map shows Maxville Limestone; Rushville, Logan, and Cuyhoga Formations, Undivided (shale, siltstone, sandstone), from the Devonian to Carboniferous, 324 to 422 million years old.
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 30×. 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, siltstone, sandstone. Age: Devonian to Carboniferous, 324 to 422 million years old. About 10 mi of the line.
Shale, siltstone. Age: Carboniferous, 299 to 324 million years old. About 7 mi of the line.
Shale, black-shale. Age: Devonian, 359 to 422 million years old. About 4 mi of the line.
Sandstone, shale. Age: Devonian, 359 to 422 million years old. About 4 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 Twinsburg reaches Lake Erie by way of Tinkers Creek and the Cuyahoga: about 35 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 Twinsburg; river miles along the main stem, rounded.
Twinsburg has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 17° in January. A normal year brings about 45 inches of snow; with the rain, that comes to about 43 inches of water.
Normals 1991–2020 and records since 1948 at Ravenna 2 S, 15 miles south-southeast, 120 ft higher. NOAA, through RCC-ACIS.
