The Spruce Grove 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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64° on Nov. 17, 2001, the hottest reading for this week of the year since 1945. Next is 63° in 2016.
Spruce Grove’s center stands about 1,210 ft above sea level. Within three miles the land runs from 1,200 ft to 1,260 ft, a difference of 60 ft: nearly flat ground.
Under the town center the state geologic map shows Mafic metavolcanic rocks (metabasalt, greenstone), from the Neoarchean, 2.5 to 2.8 billion 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 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.
Metabasalt, greenstone. Age: Neoarchean, 2.5 to 2.8 billion years old. About 15 mi of the line.
Felsic-volcanic. Age: Neoarchean, 2.5 to 2.8 billion years old. About 8 mi of the line.
Schist. Age: Neoarchean, 2.5 to 2.8 billion 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.
Spruce Grove has a cold desert climate. Summer afternoons average 79° in July; winter nights fall to about −4° in January. Barely 0.0 inches of rain fall in a normal year.
On November 14 Spruce Grove normally reaches 36° and falls to 20°. The record high is 62°, in 2025; the record low −12°, in 1959. The most rain on this date, 0.61 in, fell in 1951.
Normals 1991–2020 and records since 1945 at Thorhult, 10 miles southeast. NOAA, through RCC-ACIS.
