The Antimony 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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75° on Nov. 16, 2016, the hottest reading for this week of the year since 1981. Next is 72° in 1999.
Antimony’s center stands about 6,450 ft above sea level. Within three miles the land runs from 6,350 ft to 7,400 ft, a difference of 1,050 ft: steep hill country. The highest named summit within 15 miles is Mount Dutton, about 11,020 ft, 14 miles west-southwest.
Under the town center the state geologic map shows Alluvium and colluvium (unconsolidated), from the Quaternary, less than 2.6 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 5×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Felsic-volcanic. Age: Late Oligocene to Middle Miocene, 12 to 28 million years old. About 16 mi of the line.
Unconsolidated. Age: Quaternary, less than 2.6 million years old. About 4 mi of the line.
Felsic-volcanic, andesite. Age: Late Eocene to Oligocene, 23 to 38 million years old. About 2 mi of the line.
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 Antimony reaches Sevier Lake by way of the East Fork Sevier and the Sevier: about 320 river miles. Sevier Lake has no outlet to the sea: the water leaves only by evaporating or soaking into the ground.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Antimony; river miles along the main stem, rounded.
Antimony has a cold semi-arid climate. Summer afternoons average 85° in July; winter nights fall to about 6° in December. A normal year brings about 20 inches of snow; with the rain, that comes to about 9 inches of water.
On November 14 Antimony normally reaches 52° and falls to 16°. The record high is 72°, in 1999; the record low 2°, in 2000. The most rain on this date, 0.16 in, fell in 1987.
Normals 1991–2020 and records since 1981 at Angle, 9 miles north-northeast. NOAA, through RCC-ACIS.
