The Shannon City 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
Partly cloudy; warmer
Mostly sunny
Mostly sunny
Partly cloudy
Mostly sunny
Showers likely
74° on Nov. 16, 2001, the hottest reading for this week of the year since 1905. Next is 73° in 1964.
Shannon City’s center stands about 1,170 ft above sea level. Within three miles the land runs from 1,120 ft to 1,270 ft, a difference of 150 ft: gently rolling country.
Under the town center the state geologic map shows Lansing Group (limestone, shale), from the Late Pennsylvanian, 299 to 307 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.
Limestone, shale. Age: Late Pennsylvanian, 299 to 307 million years old. About 15 mi of the line.
Limestone, shale. Age: Late Pennsylvanian, 299 to 307 million years old. About 8 mi of the line.
Shale, mudstone. Age: Late Pennsylvanian, 299 to 307 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.
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 Shannon City reaches the Gulf of America by way of the Grand River, the Missouri and the Mississippi: about 1,620 river miles.
1,170 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Shannon City; river miles along the main stem, rounded.
Shannon City has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 11° in January. About 38 inches of rain fall in a normal year.
On November 14 Shannon City normally reaches 49° and falls to 27°. The record high is 72°, in 1964; the record low −1°, in 1916. The most rain on this date, 0.84 in, fell in 1972.
Normals 1991–2020 and records since 1905 at Creston 2 SW, 12 miles northwest, 130 ft higher. NOAA, through RCC-ACIS.
