The Clarkedale 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 1962. Next is 18° in 1970.
Clarkedale’s center stands about 230 ft above sea level. Within three miles the land runs from 200 ft to 290 ft, a difference of 90 ft: gently rolling country.
Under the town center the state geologic map shows Alluvium - Alluvial deposits in major stream channels or in mappable meanders of major streams (coarse-detrital, fine-detrital), from the Holocene, less than 12,000 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.
Coarse-detrital, fine-detrital. Age: Holocene, less than 12,000 years old. About 19 mi of the line.
Silt. Age: Quaternary, less than 2.6 million years old. About 3 mi of the line.
Fine-detrital, coarse-detrital. Age: Quaternary, less than 2.6 million years old. About 2 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 Clarkedale reaches the Gulf of America by way of Tenmile Bayou, Lost Creek, the Saint Francis and the Mississippi: about 800 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Clarkedale; river miles along the main stem, rounded.
Clarkedale has a humid subtropical climate. Summer afternoons average 91° in July; winter nights fall to about 31° in January. About 56 inches of rain fall in a normal year, with about 2 inches of snow.
On November 14 Clarkedale normally reaches 62° and falls to 42°. The record high is 80°, in 1964; the record low 21°, in 2019. The most rain on this date, 2.02 in, fell in 1980.
Normals 1991–2020 and records since 1962 at West Memphis, 13 miles south-southeast. NOAA, through RCC-ACIS.
