The San Antonito 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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86° on Nov. 11, 2007, the hottest reading for this week of the year since 1894. Next is 84° in 1999.
San Antonito’s center stands about 4,600 ft above sea level. Within three miles the land runs from 4,520 ft to 5,070 ft, a difference of 550 ft: hilly country. The highest named summit within 15 miles is Molino Peak, about 8,880 ft, 14 miles west-northwest.
Under the town center the state geologic map shows Piedmont alluvial deposits (unconsolidated), from the Pleistocene to Holocene, less than 2.6 million years old.
The section below crosses 11 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 7×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Conglomerate-sandstone, coarse-detrital, fine-detrital. Age: Late Miocene to Pleistocene, 0.1 to 7.2 million years old. About 9 mi of the line.
Unconsolidated. Age: Pleistocene to Holocene, less than 0.1 million years old. About 3 mi of the line.
Unconsolidated. Age: Pleistocene to Holocene, less than 2.6 million years old. About 3 mi of the line.
Felsic-volcanic, clastic, andesite. Age: Late Eocene to Early Oligocene, 28 to 38 million years old. About 2 mi of the line.
Dacite, rhyolite. Age: Miocene, 5.3 to 23 million years old. About 2 mi of the line.
Conglomerate-sandstone, coarse-detrital, fine-detrital. Age: Late Oligocene to Late Miocene, 5.3 to 28 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. 5 smaller units along the line are not listed.
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 San Antonito reaches the Gulf of America by way of the Rio Grande: about 1,460 river miles.
Lakes on the way: Paz Ramirez Lake, Amistad Reservoir, Elephant Butte Reservoir and Caballo Reservoir.
760 miles of the trip are on the Rio Grande.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of San Antonito; river miles along the main stem, rounded.
San Antonito has a cold semi-arid climate. Summer afternoons average 97° in June; winter nights fall to about 19° in December. About 10 inches of rain fall in a normal year, with about 2 inches of snow.
On November 14 San Antonito normally reaches 68° and falls to 27°. The record high is 83°, in 1973; the record low 13°, in 2018. The most rain on this date, 0.66 in, fell in 2003.
Normals 1991–2020 and records since 1894 at Bosque Del Apache, 6 miles south. NOAA, through RCC-ACIS.
