The Centrahoma 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.
84° on Nov. 16, 2025, the hottest reading for this week of the year since 1947. Next is 83° in 2016.
Centrahoma’s center stands about 710 ft above sea level. Within three miles the land runs from 630 ft to 820 ft, a difference of 190 ft: gently rolling country. The highest named summit within 15 miles is Biscuit Knob, about 1,070 ft, 14 miles west-southwest.
Under the town center the state geologic map shows Savanna Formation (shale, sandstone), from the Carboniferous, 299 to 324 million years old.
The section below crosses 9 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 60×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale, sandstone. Age: Carboniferous, 299 to 324 million years old. About 9 mi of the line.
Fine-detrital. Age: Holocene, less than 12,000 years old. About 6 mi of the line.
Shale, sandstone. Age: Carboniferous, 299 to 324 million years old. About 4 mi of the line.
Shale, sandstone. Age: Carboniferous, 299 to 324 million years old. About 3 mi of the line.
Shale. Age: Carboniferous, 324 to 359 million years old. About 0.6 mi of the line.
Marlstone, shale, limestone. Age: Silurian to Early Devonian, 394 to 445 million years old. About 0.5 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 3 smaller units along the line are not listed.
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 Centrahoma reaches the Gulf of America by way of Owl Creek, Leader Creek, Clear Boggy Creek, Muddy Boggy Creek, the Red River, the Atchafalaya and the Lower Atchafalaya: about 840 river miles.
590 miles of the trip are on the Red River.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Centrahoma; river miles along the main stem, rounded.
Centrahoma has a humid subtropical climate. Summer afternoons average 93° in August; winter nights fall to about 28° in January. About 46 inches of rain fall in a normal year, with about 3 inches of snow.
Normals 1991–2020 and records since 1947 at Centrahoma 2 ESE, here. NOAA, through RCC-ACIS.