The Mobridge 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.
Mostly sunny
Sunny; warmer
Partly cloudy
Partly cloudy
Partly cloudy
Partly cloudy
Chance of showers
76° on Nov. 15, 1953, the hottest reading for this week of the year since 1911. Next is 71° in 2005.
Mobridge’s center stands about 1,660 ft above sea level. Within three miles the land runs from 1,600 ft to 1,910 ft, a difference of 310 ft: rolling country. The highest named summit within 15 miles is Rattlesnake Butte, about 2,230 ft, 14 miles north-northwest.
Under the town center the state geologic map shows Pierre Shale (shale, bentonite), from the Late Cretaceous, 66 to 100 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 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, bentonite. Age: Late Cretaceous, 66 to 100 million years old. About 18 mi of the line.
Sandstone, siltstone. Age: Late Cretaceous, 66 to 100 million years old. About 4 mi of the line.
Coarse-detrital, fine-detrital. Age: Quaternary, less than 2.6 million years old. About 0.6 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 Mobridge reaches the Gulf of America by way of Lake Oahe, the Missouri and the Mississippi: about 2,350 river miles.
Lakes on the way: Lake Oahe, Lake Sharpe, Lake Francis Case and Lewis and Clark Lake.
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 Mobridge; river miles along the main stem, rounded.
Mobridge has a hot-summer humid continental climate. Summer afternoons average 87° in July; winter nights fall to about 6° in January. A normal year brings about 31 inches of snow; with the rain, that comes to about 18 inches of water.
On November 14 Mobridge normally reaches 45° and falls to 23°. The record high is 70°, in 2015; the record low −18°, in 1940. The most rain on this date, 0.80 in, fell in 1928.
Normals 1991–2020 and records since 1911 from the Mobridge Area threaded record (Mobridge Municipal Airport, here). NOAA, through RCC-ACIS.
