The Hebron 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.
Partly cloudy
Mostly sunny; warmer
Partly cloudy
Partly cloudy; cooler
Chance of showers; cooler
Mostly cloudy
Chance of showers
75° on Nov. 15, 1963, the hottest reading for this week of the year since 1916. Next is 72° in 1999.
Hebron’s center stands about 2,160 ft above sea level. Within three miles the land runs from 2,090 ft to 2,380 ft, a difference of 290 ft: rolling country. The highest named summit within 15 miles is Young Mans Butte, about 2,710 ft, 10 miles west-southwest.
Under the town center the state geologic map shows Sentinel Butte Formation (siltstone, claystone, sandstone), from the Paleocene, 56 to 66 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 38×. 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, claystone, sandstone. Age: Paleocene, 56 to 66 million years old. About 23 mi of the line.
Claystone, siltstone. Age: Paleocene, 56 to 66 million years old. About 1 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 Hebron reaches the Gulf of America by way of the Branch Knife, the Knife, the Missouri and the Mississippi: about 2,670 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 Hebron; river miles along the main stem, rounded.
Hebron has a warm-summer humid continental climate. Summer afternoons average 83° in July; winter nights fall to about 7° in January. A normal year brings about 33 inches of snow; with the rain, that comes to about 16 inches of water.
On November 14 Hebron normally reaches 40° and falls to 22°. The record high is 68°, in 1975; the record low −20°, in 1940. The most rain on this date, 1.43 in, fell in 1944.
Normals 1991–2020 and records since 1916 at Richardton Abbey, 13 miles west, 310 ft higher. NOAA, through RCC-ACIS.
