The Carlisle 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.
4.26 inches of rain fell in two days, the most for this week of the year since records began in 1893. The next wettest, 4.07 inches, fell in 2020.
Carlisle’s center stands about 480 ft above sea level. Within three miles the land runs from 320 ft to 570 ft, a difference of 250 ft: rolling country.
Under the town center the state geologic map shows Metamorphosed granitoid rocks, undivided (metagranite), from the Neoproterozoic to Devonian, 359 to 1,000 million years old.
The section below crosses 8 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.
Metagranite. Age: Neoproterozoic to Devonian, 359 to 1,000 million years old. About 6 mi of the line.
Metagranite, metadiorite. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 4 mi of the line.
Granite. Age: Paleozoic, 252 to 542 million years old. About 4 mi of the line.
Granite. Age: Carboniferous to Permian, 252 to 359 million years old. About 3 mi of the line.
Metavolcanic, hornblende-gneiss, amphibolite. Age: Neoproterozoic to Ordovician, 445 to 1,000 million years old. About 2 mi of the line.
Mylonite. Age: Carboniferous to Permian, 252 to 359 million years old. About 2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 2 smaller units along the line are not listed.
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 Carlisle reaches the Atlantic Ocean by way of Coxs Creek, the Broad, the Congaree, the Santee and the South Santee: about 240 river miles.
Lake on the way: Lib Pines Lake.
70 miles of the trip are on the Santee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Carlisle; river miles along the main stem, rounded.
Carlisle has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 31° in January. About 45 inches of rain fall in a normal year, with about 3 inches of snow.
On November 14 Carlisle normally reaches 64° and falls to 39°. The record high is 84°, in 1931; the record low 18°, in 1920. The most rain on this date, 1.20 in, fell in 1940.
Normals 1991–2020 and records since 1893 at Santuck, 4 miles northwest. NOAA, through RCC-ACIS.