The Elmo 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
Showers likely; cooler
Chance of showers; warmer
Partly cloudy
Partly cloudy
Partly cloudy
Mostly sunny
19° on Nov. 13, 2019, the coldest reading for this week of the year since 1975. Next is 21° in 1997.
Elmo’s center stands about 510 ft above sea level. Within three miles the land runs from 460 ft to 580 ft, a difference of 120 ft: gently rolling country.
The section below crosses 5 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.
Clay, sand. Age: Paleocene, 56 to 66 million years old. About 15 mi of the line.
Clay. Age: Late Cretaceous, 66 to 72 million years old. About 6 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 3 mi of the line.
Clay. Age: Paleocene, 56 to 66 million years old. About 0.3 mi of the line.
Sandstone. Age: Late Cretaceous, 66 to 72 million years old. About 0.1 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 Elmo reaches Galveston Bay and the Gulf of America by way of Muddy Cedar Creek, Cedar Creek and the Trinity: about 410 river miles.
Lakes on the way: Woodlands Golf Course Lake and Cedar Creek Reservoir.
150 miles of the trip are on the Trinity.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Elmo; river miles along the main stem, rounded.
Elmo has a humid subtropical climate. Summer afternoons average 94° in July; winter nights fall to about 34° in January. About 44 inches of rain fall in a normal year.
On November 14 Elmo normally reaches 66° and falls to 44°. The record high is 84°, in 1989; the record low 22°, in 1986. The most rain on this date, 0.32 in, fell in 1993.
Normals 1991–2020 and records since 1975 at Lake Tawakoni, 19 miles east-northeast. NOAA, through RCC-ACIS.
