The Warren 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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16° on Nov. 13, 2019, the coldest reading for this week of the year since 1876. Next is 19° in 1940.
Warren’s center stands about 230 ft above sea level. Within three miles the land runs from 120 ft to 310 ft, a difference of 190 ft: gently rolling country.
Under the town center the state geologic map shows Jackson Group (marl), from the Late Eocene, 34 to 38 million years old.
The section below crosses 4 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.
Coarse-detrital, fine-detrital. Age: Pleistocene, less than 2.6 million years old. About 8 mi of the line.
Marl. Age: Late Eocene, 34 to 38 million years old. About 7 mi of the line.
Coarse-detrital, fine-detrital. Age: Holocene, less than 12,000 years old. About 6 mi of the line.
Sand, clay. Age: Middle Eocene, 38 to 48 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 Warren reaches the Gulf of America by way of Town Branch, Franklin Creek, the Saline, the Ouachita, the Black River, the Red River, the Atchafalaya and the Lower Atchafalaya: about 470 river miles.
190 miles of the trip are on the Ouachita.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Warren; river miles along the main stem, rounded.
Warren has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 34° in January. About 53 inches of rain fall in a normal year.
On November 14 Warren normally reaches 65° and falls to 43°. The record high is 87°, in 1955; the record low 20°, in 1963. The most rain on this date, 1.61 in, fell in 2005.
Normals 1991–2020 and records since 1876 at Monticello Municipal Airport, 18 miles east. NOAA, through RCC-ACIS.
