The Sigel 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.
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Showers likely
81° on Nov. 14, 1999, the hottest reading for this week of the year since 1940. Next is 75° in 2015.
Sigel’s center stands about 990 ft above sea level. Within three miles the land runs from 860 ft to 1,020 ft, a difference of 160 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.
Claystone, siltstone, sandstone. Age: Early Cretaceous, 100 to 113 million years old. About 14 mi of the line.
Orthogneiss. Age: Paleoarchean to Mesoarchean, 2.8 to 3.6 billion years old. About 6 mi of the line.
Sandstone, siltstone, shale. Age: Middle Cambrian to Cambrian, 487 to 521 million years old. About 2 mi of the line.
Conglomerate, sandstone, mudstone. Age: Late Cretaceous, 72 to 100 million years old. About 2 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 Sigel reaches the Gulf of America by way of the Cottonwood, the Minnesota and the Mississippi: about 1,980 river miles.
Lake on the way: Lake Pepin.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Sigel; river miles along the main stem, rounded.
Sigel has a hot-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 5° in January. A normal year brings about 50 inches of snow; with the rain, that comes to about 33 inches of water.
On November 14 Sigel normally reaches 44° and falls to 25°. The record high is 81°, in 1999; the record low −8°, in 1959. The most rain on this date, 0.85 in, fell in 1944.
Normals 1991–2020 and records since 1940 at St. James Wwtp, 19 miles south. NOAA, through RCC-ACIS.
