The Romeo 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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71° on Nov. 15, 1949, the hottest reading for this week of the year since 1893. Next is 69° in 1963.
Romeo’s center stands about 7,730 ft above sea level. Within three miles the land runs from 7,660 ft to 7,820 ft, a difference of 160 ft: gently rolling country. The highest named summit within 15 miles is Los Mogotes, about 9,770 ft, 12 miles west-southwest.
Under the town center the state geologic map shows Unclassified surficial deposits and underlying Alamosa Fm in San Luis Valley (unconsolidated), from the Tertiary to Quaternary, less than 66 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 14×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Unconsolidated. Age: Tertiary to Quaternary, less than 66 million years old. About 12 mi of the line.
Basalt. Age: Miocene to Pliocene, 2.6 to 23 million years old. About 8 mi of the line.
Andesite. Age: Late Eocene to Early Oligocene, 30 to 35 million years old. About 4 mi of the line.
Conglomerate, basalt. Age: Miocene to Pliocene, 2.6 to 23 million years old. About 0.7 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.
Romeo has a cold semi-arid climate. Summer afternoons average 81° in July; winter nights fall to about 5° in January. A normal year brings about 30 inches of snow; with the rain, that comes to about 8 inches of water.
On November 14 Romeo normally reaches 50° and falls to 18°. The record high is 66°, in 1999; the record low −10°, in 1929. The most rain on this date, 0.51 in, fell in 1993.
Normals 1991–2020 and records since 1893 at Manassa, 2 miles east. NOAA, through RCC-ACIS.
