The Arnold Line 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.
Mostly sunny
Partly cloudy; warmer
Partly cloudy
Mostly sunny; warmer
Mostly sunny
Mostly sunny
Mostly sunny
5.00 inches of rain fell in two days, the most for this week of the year since records began in 1893. The next wettest, 4.25 inches, fell in 1929.
Arnold Line’s center stands about 240 ft above sea level. Within three miles the land runs from 170 ft to 400 ft, a difference of 230 ft: rolling country.
Under the town center the state geologic map shows Pascagoula and Hattiesburg formation (clay, sand), from the Miocene, 5.3 to 23 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 61×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Clay, sand. Age: Miocene, 5.3 to 23 million years old. About 18 mi of the line.
Sand, gravel. Age: Pliocene to Pleistocene, less than 5.3 million years old. About 6 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 Arnold Line reaches the Gulf of America by way of Mixons Creek, the Bouie, the Leaf, the Pascagoula and the West Pascagoula: about 160 river miles.
70 miles of the trip are on the Leaf.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Arnold Line; river miles along the main stem, rounded.
Arnold Line has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 38° in January. About 59 inches of rain fall in a normal year.
On November 14 Arnold Line normally reaches 70° and falls to 44°. The record high is 90°, in 1925; the record low 25°, in 1963. The most rain on this date, 3.60 in, fell in 1957.
Normals 1991–2020 and records since 1893 from the Hattiesburg Area threaded record (Hattiesburg Chain Municipal Airport, 9 miles east-southeast). NOAA, through RCC-ACIS.
