The Selma 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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3.74 inches of rain fell in two days, the most for this week of the year since records began in 1892. The next wettest, 3.31 inches, fell in 1926.
Selma’s center stands about 170 ft above sea level. Within three miles the land runs from 130 ft to 220 ft, a difference of 90 ft: gently rolling country.
Under the town center the state geologic map shows Terrace Deposits and Upland Sediment (gravel, sand), from the Tertiary, 2.6 to 66 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 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.
Gravel, sand. Age: Tertiary, 2.6 to 66 million years old. About 10 mi of the line.
Clay. Age: Tertiary, 2.6 to 66 million years old. About 9 mi of the line.
Biotite-gneiss, mica-schist, amphibolite. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 2 mi of the line.
Phyllite, schist. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 2 mi of the line.
Sandstone, mudstone. Age: Cretaceous, 66 to 145 million years old. About 1 mi of the line.
Granitic. Age: Early Pennsylvanian to Permian, 270 to 320 million years old. About 0.8 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 Selma reaches Pamlico Sound and the Atlantic Ocean by way of the Neuse: about 190 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Selma; river miles along the main stem, rounded.
Selma has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 31° in January. About 49 inches of rain fall in a normal year.
On November 14 Selma normally reaches 65° and falls to 39°. The record high is 82°, in 1951; the record low 18°, in 1920. The most rain on this date, 1.25 in, fell in 2024.
Normals 1991–2020 and records since 1892 at Smithfield, 3 miles west-southwest. NOAA, through RCC-ACIS.
