The Amasa 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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67° on Nov. 11, 2016, the hottest reading for this week of the year since 1994. Next is 66° in 1999.
Amasa’s center stands about 1,440 ft above sea level. Within three miles the land runs from 1,410 ft to 1,640 ft, a difference of 230 ft: rolling country. The highest named summit within 15 miles is Michigamme Mountain, about 1,610 ft, 13 miles east-southeast.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 51×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Mixed-clastic, metagraywacke. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 13 mi of the line.
Mafic-volcanic. Age: Paleoproterozoic, 1.6 to 2.5 billion years old. About 11 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 Amasa reaches Lake Michigan by way of the Hemlock, the Paint, the Brule and the Menominee: about 150 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
120 miles of the trip are on the Menominee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Amasa; river miles along the main stem, rounded.
Amasa has a warm-summer humid continental climate. Summer afternoons average 79° in July; winter nights fall to about 0° in January. About 31 inches of rain fall in a normal year.
Normals 1991–2020 and records since 1994 at Amasa 1 W, here. NOAA, through RCC-ACIS.
