The Sublette 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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1° on Nov. 12, 2019, the coldest reading for this week of the year since 1912. Next is 3° in 1986.
Sublette’s center stands about 920 ft above sea level. Within three miles the land runs from 820 ft to 960 ft, a difference of 140 ft: gently rolling country.
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 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.
Sandstone, limestone, dolostone. Age: Middle Ordovician to Late Ordovician, 454 to 468 million years old. About 8 mi of the line.
Dolostone, limestone. Age: Late Ordovician, 447 to 459 million years old. About 7 mi of the line.
Dolostone, limestone. Age: Silurian, 422 to 445 million years old. About 4 mi of the line.
Dolostone. Age: Early Ordovician to Middle Ordovician, 459 to 487 million years old. About 3 mi of the line.
Shale, limestone. Age: Late Ordovician, 445 to 454 million years old. About 1 mi of the line.
Dolostone, limestone. Age: Late Ordovician, 454 to 459 million years old. About 1 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 Sublette reaches the Gulf of America by way of Big Bureau Creek, the Illinois and the Mississippi: about 1,460 river miles.
Lake on the way: Peoria Lake.
1,190 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Sublette; river miles along the main stem, rounded.
Sublette has a hot-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 12° in January. A normal year brings about 30 inches of snow; with the rain, that comes to about 37 inches of water.
On November 14 Sublette normally reaches 47° and falls to 29°. The record high is 73°, in 1989; the record low 3°, in 1986. The most rain on this date, 2.42 in, fell in 1926.
Normals 1991–2020 and records since 1912 at Paw Paw 2 S, 13 miles east. NOAA, through RCC-ACIS.
