The Thorpe 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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73° on Nov. 17, 1953, the hottest reading for this week of the year since 1911. Next is 67° in 1934.
Thorpe’s center stands about 1,740 ft above sea level. Within three miles the land runs from 1,440 ft to 1,800 ft, a difference of 360 ft: rolling country.
Under the town center the state geologic map shows Volcanogenic graywacke and mudstone (graywacke, mudstone), from the Neoarchean, 2.5 to 2.8 billion 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 40×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Metabasalt, greenstone. Age: Neoarchean, 2.5 to 2.8 billion years old. About 15 mi of the line.
Graywacke, mudstone. Age: Neoarchean, 2.5 to 2.8 billion years old. About 6 mi of the line.
Felsic-volcanic. Age: Neoarchean, 2.5 to 2.8 billion years old. About 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 Thorpe reaches the Gulf of America by way of Sucker Branch, the Kabekona, the Leech Lake and the Mississippi: about 2,250 river miles.
Lakes on the way: Leech Lake and Lake Pepin.
1,750 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Thorpe; river miles along the main stem, rounded.
Thorpe has a warm-summer humid continental climate. Summer afternoons average 79° in July; winter nights fall to about −4° in January. A normal year brings about 52 inches of snow; with the rain, that comes to about 28 inches of water.
On November 14 Thorpe normally reaches 35° and falls to 19°. The record high is 70°, in 1953; the record low −20°, in 1940. The most rain on this date, 1.00 in, fell in 1951.
Normals 1991–2020 and records since 1911 at Itasca University Of Minn, 17 miles west-northwest, 250 ft lower. NOAA, through RCC-ACIS.
