The L'Anse 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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66° on Nov. 17, 2023, the hottest reading for this week of the year since 1956. Next is 64° in 2016.
L'Anse’s center stands about 710 ft above sea level. Within three miles the land runs from 590 ft to 1,190 ft, a difference of 600 ft: hilly country. The highest named summit within 15 miles is Mount Curwood, about 2,010 ft, 10 miles east-southeast.
Under the town center the state geologic map shows Baraga Group; Michigamme Formation; Gray to black slate, from the Paleoproterozoic, 1.6 to 2.5 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 14×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 10 mi of the line.
Slate. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 8 mi of the line.
Gneiss, amphibolite. Age: Neoarchean, 2.5 to 2.8 billion years old. About 5 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 L'Anse reaches Lake Superior by way of the Falls: about 1 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of L'Anse; river miles along the main stem, rounded.
L'Anse has a warm-summer humid continental climate. Summer afternoons average 77° in July; winter nights fall to about 6° in January. About 33 inches of rain fall in a normal year.
On November 14 L'Anse normally reaches 40° and falls to 25°. The record high is 62°, in 1990; the record low 2°, in 1986. The most rain on this date, 0.33 in, fell in 1957.
Normals 1991–2020 and records since 1956 at Alberta Ford For Center, 8 miles south-southwest, 600 ft higher. NOAA, through RCC-ACIS.
