The Rockport 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.
Partly cloudy
Partly cloudy; warmer
Mostly sunny
Sunny
Mostly sunny
Partly cloudy
Mostly sunny
16° on Nov. 13, 2019, the coldest reading for this week of the year since 1883. Next is 19° in 1907.
Rockport’s center stands about 340 ft above sea level. Within three miles the land runs from 230 ft to 540 ft, a difference of 310 ft: rolling country. The highest named summit within 15 miles is Shinn Mountain, about 830 ft, 9 miles west.
Under the town center the state geologic map shows Wilcox Group (sand, fine-detrital), from the Early Eocene, 48 to 56 million years old.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 27×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Novaculite. Age: Late Devonian to Carboniferous, 324 to 384 million years old. About 9 mi of the line.
Sand, fine-detrital. Age: Early Eocene, 48 to 56 million years old. About 8 mi of the line.
Coarse-detrital, fine-detrital. Age: Pleistocene, less than 2.6 million years old. About 3 mi of the line.
Coarse-detrital, fine-detrital. Age: Holocene, less than 12,000 years old. About 2 mi of the line.
Sandstone. Age: Silurian, 422 to 445 million years old. About 1 mi of the line.
Clay, marl. Age: Paleocene, 56 to 66 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.
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 Rockport reaches the Gulf of America by way of the Ouachita, the Black River, the Red River, the Atchafalaya and the Lower Atchafalaya: about 590 river miles.
390 miles of the trip are on the Ouachita.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Rockport; river miles along the main stem, rounded.
Rockport has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 29° in January. About 58 inches of rain fall in a normal year, with about 1 inch of snow.
On November 14 Rockport normally reaches 62° and falls to 39°. The record high is 89°, in 1999; the record low 16°, in 2019. The most rain on this date, 3.20 in, fell in 1980.
Normals 1991–2020 and records since 1883 at Malvern, here. NOAA, through RCC-ACIS.
