The Glasgow 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.
79° on Nov. 12, 1999, the hottest reading for this week of the year since 1893. Next is 69° in 1939.
Glasgow’s center stands about 2,120 ft above sea level. Within three miles the land runs from 2,080 ft to 2,310 ft, a difference of 230 ft: rolling country. The highest named summit within 15 miles is Tiger Butte, about 2,320 ft, 7 miles southeast.
Under the town center the state geologic map shows Bearpaw Formation (shale), from the Late Cretaceous, 72 to 84 million years old.
The section below crosses 2 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 34×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale. Age: Late Cretaceous, 72 to 84 million years old. About 21 mi of the line.
Gravel, sand, silt. Age: Pleistocene to Holocene, less than 1.8 million years old. About 3 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 Glasgow reaches the Gulf of America by way of Cherry Creek, the Milk River, the Missouri and the Mississippi: about 2,990 river miles.
Lakes on the way: Lake Oahe, Lake Sakakawea, Lake Sharpe and Lake Francis Case.
1,170 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Glasgow; river miles along the main stem, rounded.
Glasgow has a cold semi-arid climate. Summer afternoons average 86° in July; winter nights fall to about 6° in January. A normal year brings about 41 inches of snow; with the rain, that comes to about 13 inches of water.
On November 14 Glasgow normally reaches 41° and falls to 21°. The record high is 66°, in 1939; the record low −15°, in 2014. The most rain on this date, 0.45 in, fell in 1996.
Normals 1991–2020 and records since 1893 from the Glasgow Area threaded record (Glasgow International Airport, here, 170 ft higher). NOAA, through RCC-ACIS.