The Wilmar 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
Mostly sunny
Partly cloudy
Mostly sunny
Mostly sunny
Mostly sunny
16° on Nov. 13, 2019, the coldest reading for this week of the year since 1876. Next is 19° in 1940.
Wilmar’s center stands about 170 ft above sea level. Within three miles the land runs from 120 ft to 250 ft, a difference of 130 ft: gently rolling country. The highest named summit within 15 miles is Gaster Hill, about 390 ft, 7 miles east-northeast.
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.
Marl. Age: Late Eocene, 34 to 38 million years old. About 11 mi of the line.
Coarse-detrital, fine-detrital. Age: Pleistocene, less than 2.6 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.
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 Wilmar reaches the Gulf of America by way of Flat Branch, Tenmile Creek, Log Slough, Big Slough, the Saline, the Ouachita, the Black River, the Red River, the Atchafalaya and the Lower Atchafalaya: about 460 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 Wilmar; river miles along the main stem, rounded.
Wilmar 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 Wilmar 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, 10 miles east, 110 ft higher. NOAA, through RCC-ACIS.
