The Marion 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
Mostly cloudy
Partly cloudy
Sunny
Mostly sunny
Partly cloudy
Partly cloudy
78° on Nov. 11, 2020, the hottest reading for this week of the year since 1893. Next is 74° in 1893.
Marion’s center stands about 980 ft above sea level. Within three miles the land runs from 910 ft to 1,020 ft, a difference of 110 ft: gently rolling country.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 64×. 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 7 mi of the line.
Dolostone. Age: Silurian, 428 to 445 million years old. About 5 mi of the line.
Limestone. Age: Devonian, 359 to 422 million years old. About 4 mi of the line.
Dolostone. Age: Silurian, 422 to 445 million years old. About 4 mi of the line.
Limestone. Age: Devonian, 359 to 422 million years old. About 2 mi of the line.
Dolostone. Age: Silurian, 425 to 445 million years old. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 1 smaller unit 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 Marion reaches the Gulf of America by way of the Little Scioto, the Scioto, the Ohio and the Mississippi: about 1,780 river miles.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Marion; river miles along the main stem, rounded.
Marion has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 20° in January. A normal year brings about 23 inches of snow; with the rain, that comes to about 38 inches of water.
On November 14 Marion normally reaches 52° and falls to 35°. The record high is 72°, in 1909; the record low 6°, in 2019. The most rain on this date, 1.15 in, fell in 1972.
Normals 1991–2020 and records since 1893 at Bucyrus, 18 miles north-northeast. NOAA, through RCC-ACIS.
