The Pemberton 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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74° on Nov. 14, 1999, the hottest reading for this week of the year since 1914. Next is 74° in 2012.
Pemberton’s center stands about 1,050 ft above sea level. Within three miles the land runs from 1,000 ft to 1,070 ft, a difference of 70 ft: gently rolling country.
Under the town center the state geologic map shows Lower Ordovician (dolostone, sandstone), from the Early Ordovician, 471 to 487 million years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 60×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Dolostone, sandstone. Age: Early Ordovician, 471 to 487 million years old. About 11 mi of the line.
Sandstone, siltstone, shale. Age: Cambrian, 487 to 497 million years old. About 5 mi of the line.
Limestone, dolostone. Age: Late Ordovician, 445 to 459 million years old. About 5 mi of the line.
Shale, limestone, sandstone. Age: Middle Ordovician to Late Ordovician, 445 to 471 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 Pemberton reaches the Gulf of America by way of the Little Cobb, the Cobb, the Le Sueur, the Blue Earth, the Minnesota and the Mississippi: about 1,980 river miles.
Lake on the way: Lake Pepin.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Pemberton; river miles along the main stem, rounded.
Pemberton has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 5° in January. A normal year brings about 52 inches of snow; with the rain, that comes to about 38 inches of water.
On November 14 Pemberton normally reaches 42° and falls to 25°. The record high is 74°, in 1999; the record low −9°, in 1959. The most rain on this date, 0.79 in, fell in 1951.
Normals 1991–2020 and records since 1914 at Waseca Southern Research And Outreach Center, 13 miles east-northeast. NOAA, through RCC-ACIS.
