The Mathias 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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70° on Nov. 11, 2016, the hottest reading for this week of the year since 1987. Next is 64° in 1990.
Mathias’s center stands about 790 ft above sea level. Within three miles the land runs from 750 ft to 920 ft, a difference of 170 ft: gently rolling country.
Under the town center the state geologic map shows Trenton Limestone (limestone, dolostone), from the Late Ordovician, 445 to 459 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 58×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Limestone, dolostone. Age: Late Ordovician, 445 to 459 million years old. About 10 mi of the line.
Limestone. Age: Late Ordovician, 445 to 459 million years old. About 9 mi of the line.
Black-shale. Age: Late Ordovician, 445 to 459 million years old. About 2 mi of the line.
Dolostone. Age: Early Ordovician, 471 to 487 million years old. About 1 mi of the line.
Shale, limestone. Age: Late Ordovician, 445 to 459 million years old. About 0.9 mi of the line.
Black-shale, limestone. Age: Late Ordovician, 445 to 459 million years old. About 0.4 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 Mathias reaches Lake Michigan by way of the East Branch Whitefish and the Whitefish: about 20 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 Mathias; river miles along the main stem, rounded.
Mathias has a warm-summer humid continental climate. Summer afternoons average 78° in July; winter nights fall to about 7° in February. A normal year brings about 164 inches of snow; with the rain, that comes to about 35 inches of water.
On November 14 Mathias normally reaches 41° and falls to 26°. The record high is 60°, in 1999; the record low 11°, in 2018. The most rain on this date, 0.63 in, fell in 2000.
Normals 1991–2020 and records since 1987 at Chatham Experiment Farm 2, 9 miles north-northwest. NOAA, through RCC-ACIS.
