The Old Monroe 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.
Sunny
Partly cloudy; warmer
Sunny
Sunny
Partly cloudy
Partly cloudy
Partly cloudy
3.60 inches of rain fell in two days, the most for this week of the year since records began in 1893. The next wettest, 2.76 inches, fell in 1913.
Old Monroe’s center stands about 450 ft above sea level. Within three miles the land runs from 420 ft to 550 ft, a difference of 130 ft: gently rolling country. The highest named summit within 15 miles is Tucker Knob, about 890 ft, 13 miles east-northeast.
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 51×. 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. Age: Carboniferous, 324 to 359 million years old. About 9 mi of the line.
Clay, silt, sand. Age: Holocene, less than 12,000 years old. About 6 mi of the line.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 5 mi of the line.
Limestone. Age: Middle Ordovician, 459 to 471 million years old. About 3 mi of the line.
Limestone. Age: Middle Ordovician to Late Ordovician, 445 to 471 million years old. About 2 mi of the line.
Limestone, siltstone. Age: Carboniferous, 324 to 359 million years old. About 0.3 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 Old Monroe reaches the Gulf of America by way of the Cuivre and the Mississippi: about 1,220 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Old Monroe; river miles along the main stem, rounded.
Old Monroe has a hot-summer humid continental climate. Summer afternoons average 88° in July; winter nights fall to about 22° in January. A normal year brings about 9 inches of snow; with the rain, that comes to about 46 inches of water.
On November 14 Old Monroe normally reaches 56° and falls to 36°. The record high is 83°, in 1955; the record low 11°, in 1986. The most rain on this date, 2.21 in, fell in 1913.
Normals 1991–2020 and records since 1893 at St Charles Elm Point, 15 miles east-southeast. NOAA, through RCC-ACIS.
