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 sunny
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Partly cloudy
Mostly sunny
Partly cloudy
Showers likely
81° on Nov. 14, 1999, the hottest reading for this week of the year since 1966. Next is 77° in 1989.
Marion’s center stands about 1,320 ft above sea level. Within three miles the land runs from 1,290 ft to 1,420 ft, a difference of 130 ft: gently rolling country.
Under the town center the state geologic map shows Alluvium (sand, silt, clay), from the Pleistocene to Holocene, less than 2.6 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 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. Age: Permian, 252 to 299 million years old. About 11 mi of the line.
Shale, limestone. Age: Permian, 252 to 299 million years old. About 10 mi of the line.
Sand, silt, clay. Age: Pleistocene to Holocene, less than 2.6 million years old. About 3 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 Marion reaches the Gulf of America by way of Clear Creek, the Cottonwood, the Neosho, the Arkansas and the Mississippi: about 1,490 river miles.
Lakes on the way: Murray Lake and Ozark Lake.
600 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 92° in July; winter nights fall to about 21° in January. About 34 inches of rain fall in a normal year.
On November 14 Marion normally reaches 56° and falls to 35°. The record high is 81°, in 1999; the record low 8°, in 1986. The most rain on this date, 0.30 in, fell in 1993.
Normals 1991–2020 and records since 1966 at Marion Reservoir, 4 miles west-northwest. NOAA, through RCC-ACIS.
