The Andrews 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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4.16 inches of rain fell in two days, the most for this week of the year since records began in 1962. The next wettest, 3.42 inches, fell in 2009.
Andrews’s center stands about 40 ft above sea level. Within three miles the land runs from 10 ft to 80 ft, a difference of 70 ft: gently rolling country.
Under the town center the state geologic map shows Socastee Formation (sand, clay), from the Quaternary, less than 2.6 million years old.
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 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.
Sand, clay. Age: Quaternary, less than 2.6 million years old. About 17 mi of the line.
Sand, clay. Age: Quaternary, less than 2.6 million years old. About 5 mi of the line.
Sand, gravel. Age: Quaternary, less than 2.6 million years old. About 3 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 Andrews reaches the Atlantic Ocean by way of Horse Pen Swamp and the Black River: about 50 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Andrews; river miles along the main stem, rounded.
Andrews has a cold desert climate. Summer afternoons average 90° in July; winter nights fall to about 34° in January. Barely 0.0 inches of rain fall in a normal year.
On November 14 Andrews normally reaches 68° and falls to 42°. The record high is 87°, in 1993; the record low 23°, in 1984. The most rain on this date, 1.20 in, fell in 2002.
Normals 1991–2020 and records since 1962 at Andrews, here. NOAA, through RCC-ACIS.
