The Garwin 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
Mostly sunny
Partly cloudy
Mostly sunny
Showers likely
77° on Nov. 14, 1999, the hottest reading for this week of the year since 1894. Next is 75° in 1941.
Garwin’s center stands about 900 ft above sea level. Within three miles the land runs from 870 ft to 1,040 ft, a difference of 170 ft: gently rolling country.
Under the town center the state geologic map shows Famennian formations (shale, siltstone), from the Late Devonian, 359 to 374 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, siltstone. Age: Late Devonian, 359 to 374 million years old. About 14 mi of the line.
Shale, limestone, dolostone. Age: Late Devonian, 374 to 384 million years old. About 9 mi of the line.
Dolostone, limestone, siltstone. Age: Early Mississippian, 347 to 359 million years old. About 0.9 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 Garwin reaches the Gulf of America by way of Deer Creek, the Iowa and the Mississippi: about 1,600 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Garwin; river miles along the main stem, rounded.
Garwin has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 10° in January. A normal year brings about 33 inches of snow; with the rain, that comes to about 35 inches of water.
On November 14 Garwin normally reaches 47° and falls to 27°. The record high is 77°, in 1999; the record low 0°, in 1959. The most rain on this date, 1.43 in, fell in 1926.
Normals 1991–2020 and records since 1894 at Toledo 3 N, 6 miles southeast. NOAA, through RCC-ACIS.
