The Manchester 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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−2° on Nov. 12, 2019, the coldest reading for this week of the year since 1921. Next is 1° in 1986.
Manchester’s center stands about 950 ft above sea level. Within three miles the land runs from 920 ft to 1,050 ft, a difference of 130 ft: gently rolling country. The highest named summit within 15 miles is Wolf Hill, about 1,110 ft, 8 miles north-northwest.
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.
Dolostone. Age: Late Ordovician to Silurian, 434 to 447 million years old. About 17 mi of the line.
Dolostone. Age: Silurian, 431 to 440 million years old. About 6 mi of the line.
Limestone. Age: Silurian, 431 to 440 million 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.
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 Manchester reaches the Gulf of America by way of the Maquoketa and the Mississippi: about 1,640 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Manchester; river miles along the main stem, rounded.
Manchester has a warm-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 8° in January. A normal year brings about 35 inches of snow; with the rain, that comes to about 39 inches of water.
On November 14 Manchester normally reaches 46° and falls to 26°. The record high is 77°, in 1999; the record low 1°, in 1986. The most rain on this date, 0.49 in, fell in 1994.
Normals 1991–2020 and records since 1921 at Manchester #2, here. NOAA, through RCC-ACIS.
