The Warsaw 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
Mostly sunny
Sunny
Partly cloudy
Mostly sunny
Partly cloudy
3° on Nov. 17, 1959, the coldest reading for this week of the year since 1891. Next is 5° in 1940.
Warsaw’s center stands about 580 ft above sea level. Within three miles the land runs from 480 ft to 740 ft, a difference of 260 ft: rolling country.
The section below crosses 8 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. Age: Middle Mississippian, 331 to 347 million years old. About 11 mi of the line.
Clay, silt, sand. Age: Holocene, less than 12,000 years old. About 6 mi of the line.
Dolostone, limestone, siltstone. Age: Early Mississippian, 347 to 359 million years old. About 2 mi of the line.
Dolostone, limestone. Age: Early Mississippian to Middle Mississippian, 331 to 359 million years old. About 2 mi of the line.
Shale, siltstone. Age: Late Devonian, 359 to 374 million years old. About 0.9 mi of the line.
Limestone. Age: Carboniferous, 324 to 359 million years old. About 0.7 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 2 smaller units 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 Warsaw reaches the Gulf of America by way of the Mississippi: about 1,330 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Warsaw; river miles along the main stem, rounded.
Warsaw has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 17° in January. About 40 inches of rain fall in a normal year.
On November 14 Warsaw normally reaches 51° and falls to 33°. The record high is 78°, in 1999; the record low 7°, in 1940. The most rain on this date, 1.32 in, fell in 1926.
Normals 1991–2020 and records since 1891 at Keokuk L&D 19, 4 miles northeast. NOAA, through RCC-ACIS.
