The Sandy 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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65° on Nov. 14, 1999, the hottest reading for this week of the year since 1895. Next is 63° in 2010.
Sandy’s center stands about 1,470 ft above sea level. Within three miles the land runs from 1,410 ft to 1,550 ft, a difference of 140 ft: gently rolling country. The highest named summit within 15 miles is Pike Mountain, about 1,950 ft, 9 miles south-southeast.
Under the town center the state geologic map shows Granodiorite to hornblende diorite, locally magmatically foliated (granodiorite, diorite), from the Neoarchean, 2.5 to 2.8 billion years old.
The section below crosses 10 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 42×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Granite, granodiorite. Age: Neoarchean, 2.5 to 2.8 billion years old. About 7 mi of the line.
Granodiorite, diorite. Age: Neoarchean, 2.5 to 2.8 billion years old. About 4 mi of the line.
Felsic-volcanic. Age: Neoarchean, 2.5 to 2.8 billion years old. About 3 mi of the line.
Graywacke, mudstone. Age: Neoarchean, 2.5 to 2.8 billion years old. About 2 mi of the line.
Schist. Age: Neoarchean, 2.5 to 2.8 billion years old. About 2 mi of the line.
Tonalite, granodiorite, diorite. Age: Neoarchean, 2.5 to 2.8 billion years old. About 2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 4 smaller units along the line are not listed.
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 Sandy reaches Hudson Bay by way of the Rice, the Little Fork, the Rainy, the Winnipeg and the Nelson: about 1,100 river miles. Past the border it runs north through Canada to Hudson Bay.
Lakes on the way: Lake of the Woods and Lake Winnipeg.
400 miles of the trip are on the Nelson.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Sandy; river miles along the main stem, rounded.
Sandy has a warm-summer humid continental climate. Summer afternoons average 77° in July; winter nights fall to about −7° in January. A normal year brings about 69 inches of snow; with the rain, that comes to about 28 inches of water.
On November 14 Sandy normally reaches 36° and falls to 19°. The record high is 65°, in 1999; the record low −13°, in 1986. The most rain on this date, 1.53 in, fell in 1944.
Normals 1991–2020 and records since 1895 at Tower 2 S, 12 miles northeast. NOAA, through RCC-ACIS.
