The Forney 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
Sunny; warmer
Mostly cloudy
Partly cloudy
Partly cloudy
89° on Nov. 14, 1989, the hottest reading for this week of the year since 1913. Next is 88° in 2025.
Forney’s center stands about 480 ft above sea level. Within three miles the land runs from 380 ft to 530 ft, a difference of 150 ft: gently rolling country.
Under the town center the state geologic map shows Neylandville and Marlbrook Marls, undivided (claystone), from the Late Cretaceous, 66 to 72 million years old.
The section below crosses 4 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.
Claystone. Age: Late Cretaceous, 66 to 72 million years old. About 16 mi of the line.
Clay. Age: Late Cretaceous, 66 to 72 million years old. About 4 mi of the line.
Fine-detrital, coarse-detrital. Age: Holocene, less than 12,000 years old. About 3 mi of the line.
Sandstone-mudstone. Age: Late Cretaceous, 66 to 72 million years old. About 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 Forney reaches Galveston Bay and the Gulf of America by way of Mustang Creek, the East Fork Trinity and the Trinity: about 430 river miles.
Lake on the way: Woodlands Golf Course Lake.
220 miles of the trip are on the Trinity.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Forney; river miles along the main stem, rounded.
Forney has a humid subtropical climate. Summer afternoons average 97° in July; winter nights fall to about 38° in January. About 38 inches of rain fall in a normal year, with about 2 inches of snow.
On November 14 Forney normally reaches 68° and falls to 48°. The record high is 89°, in 1989; the record low 21°, in 1940. The most rain on this date, 2.05 in, fell in 1994.
Normals 1991–2020 and records since 1913 from the Dallas Area threaded record (Dallas Faa Airport, 22 miles west-northwest). NOAA, through RCC-ACIS.
