The Udell 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
Chance of showers
78° on Nov. 15, 1999, the hottest reading for this week of the year since 1970. Next is 76° in 2001.
Udell’s center stands about 1,000 ft above sea level. Within three miles the land runs from 860 ft to 1,000 ft, a difference of 140 ft: gently rolling country.
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 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, sandstone, siltstone. Age: Early Pennsylvanian to Middle Pennsylvanian, 307 to 324 million years old. About 12 mi of the line.
Shale, limestone. Age: Middle Pennsylvanian, 307 to 315 million years old. About 7 mi of the line.
Shale, siltstone. Age: Middle Pennsylvanian, 307 to 315 million years old. About 4 mi of the line.
Limestone, shale. Age: Middle Pennsylvanian to Late Pennsylvanian, 299 to 315 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 Udell reaches the Gulf of America by way of North Fox Creek, the Fox River and the Mississippi: about 1,430 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Udell; river miles along the main stem, rounded.
Udell has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 13° in January. About 39 inches of rain fall in a normal year.
On November 14 Udell normally reaches 50° and falls to 30°. The record high is 73°, in 1989; the record low 4°, in 1986. The most rain on this date, 0.81 in, fell in 1972.
Normals 1991–2020 and records since 1970 at Rathbun Dam, 9 miles west-northwest. NOAA, through RCC-ACIS.
