The Commerce 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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3.88 inches of rain fell in two days, the most for this week of the year since records began in 1957. The next wettest, 3.61 inches, fell in 2018.
Commerce’s center stands about 910 ft above sea level. Within three miles the land runs from 730 ft to 960 ft, a difference of 230 ft: rolling country.
Under the town center the state geologic map shows Hornblende Gneiss/ Amphibolite (hornblende-gneiss, amphibolite), from the Precambrian to Paleozoic.
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 59×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Hornblende-gneiss, amphibolite. Age: Precambrian to Paleozoic. About 10 mi of the line.
Biotite-gneiss, amphibolite. Age: Precambrian to Paleozoic. About 10 mi of the line.
Gneiss. Age: Precambrian to Paleozoic. 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 Commerce reaches the Atlantic Ocean by way of Beaverdam Creek, Grove Creek, the Hudson, the Broad and the Savannah: about 330 river miles.
250 miles of the trip are on the Savannah.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Commerce; river miles along the main stem, rounded.
Commerce has a humid subtropical climate. Summer afternoons average 89° in July; winter nights fall to about 31° in January. About 52 inches of rain fall in a normal year.
On November 14 Commerce normally reaches 64° and falls to 39°. The record high is 79°, in 1985; the record low 22°, in 2019. The most rain on this date, 1.65 in, fell in 1983.
Normals 1991–2020 and records since 1957 at Commerce 4 NNW, 4 miles north-northwest. NOAA, through RCC-ACIS.
