The Grant 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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−10° on Nov. 14, 1940, the coldest reading for this week of the year since 1893. Next is −8° in 1955.
Grant’s center stands about 3,420 ft above sea level. Within three miles the land runs from 3,370 ft to 3,460 ft, a difference of 90 ft: gently rolling country.
Under the town center the state geologic map shows Ogallala Group or Formation (siltstone-mudstone, conglomerate-sandstone), from the Miocene, 5.3 to 23 million years old.
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.
Siltstone-mudstone, conglomerate-sandstone. Age: Miocene, 5.3 to 23 million years old. About 24 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.
Grant has a hot-summer humid continental climate. Summer afternoons average 90° in July; winter nights fall to about 15° in January. A normal year brings about 25 inches of snow; with the rain, that comes to about 20 inches of water.
On November 14 Grant normally reaches 52° and falls to 25°. The record high is 80°, in 1999; the record low −10°, in 1940. The most rain on this date, 1.00 in, fell in 1985.
Normals 1991–2020 and records since 1893 at Ogallala, 20 miles north, 190 ft lower. NOAA, through RCC-ACIS.
