The Hermleigh 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.
Showers likely
Mostly cloudy
Mostly cloudy
Partly cloudy
Partly cloudy; warmer
Partly cloudy
Partly cloudy
89° on Nov. 11, 2006, the hottest reading for this week of the year since 1911. Next is 88° in 1933.
Hermleigh’s center stands about 2,440 ft above sea level. Within three miles the land runs from 2,330 ft to 2,450 ft, a difference of 120 ft: gently rolling country.
Under the town center the state geologic map shows Ogallala Formation (sand), from the Late Miocene to Pliocene, 2.6 to 12 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 55×. 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. Age: Middle Triassic to Late Triassic, 208 to 247 million years old. About 11 mi of the line.
Sand. Age: Late Miocene to Pliocene, 2.6 to 12 million years old. About 8 mi of the line.
Coarse-detrital, fine-detrital. Age: Quaternary, less than 2.6 million years old. About 2 mi of the line.
Shale. Age: Permian, 252 to 299 million years old. About 1 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 1 mi of the line.
Sand. Age: Holocene, less than 12,000 years old. About 0.8 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 Hermleigh reaches the Gulf of America by way of Buffalo Creek, the Clear Fork and the Brazos: about 1,050 river miles.
Lakes on the way: Possum Kingdom Lake and Lake Granbury.
550 miles of the trip are on the Brazos.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Hermleigh; river miles along the main stem, rounded.
Hermleigh has a humid subtropical climate. Summer afternoons average 95° in July; winter nights fall to about 29° in January. About 22 inches of rain fall in a normal year, with about 2 inches of snow.
On November 14 Hermleigh normally reaches 66° and falls to 39°. The record high is 88°, in 1933; the record low 15°, in 1940. The most rain on this date, 1.28 in, fell in 2001.
Normals 1991–2020 and records since 1911 at Snyder, 10 miles west-northwest, 120 ft lower. NOAA, through RCC-ACIS.
