The Logan 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.
Showers likely
Mostly cloudy
Partly cloudy
Partly cloudy
Sunny; warmer
Mostly sunny
Mostly sunny
2° on Nov. 17, 2014, the coldest reading for this week of the year since 1941. Next is 7° in 2018.
Logan’s center stands about 3,800 ft above sea level. Within three miles the land runs from 3,690 ft to 3,980 ft, a difference of 290 ft: rolling country.
Under the town center the state geologic map shows Alluvium (unconsolidated), from the Pleistocene to Holocene, less than 0.1 million years old.
The section below crosses 3 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 39×. 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: Pleistocene to Holocene, less than 0.1 million years old. About 12 mi of the line.
Mudstone. Age: Late Triassic, 208 to 227 million years old. About 11 mi of the line.
Sandstone, conglomerate. Age: Late Triassic, 208 to 227 million years old. About 0.5 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 Logan reaches the Gulf of America by way of Ute Reservoir, the Canadian, the Arkansas and the Mississippi: about 1,700 river miles.
Lakes on the way: Murray Lake, Ozark Lake and Ute Reservoir.
720 miles of the trip are on the Canadian.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Logan; river miles along the main stem, rounded.
Logan has a cold semi-arid climate. Summer afternoons average 95° in July; winter nights fall to about 24° in January. About 13 inches of rain fall in a normal year.
On November 14 Logan normally reaches 63° and falls to 33°. The record high is 85°, in 2025; the record low 14°, in 1976. The most rain on this date, 0.09 in, fell in 1968.
Normals 1991–2020 and records since 1941 at Tucumcari Municipal Airport, 15 miles southwest, 240 ft higher. NOAA, through RCC-ACIS.
