The Dunkirk 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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3° on Nov. 13, 2019, the coldest reading for this week of the year since 1942. Next is 10° in 1959.
Dunkirk’s center stands about 950 ft above sea level. Within three miles the land runs from 900 ft to 1,000 ft, a difference of 100 ft: gently rolling country.
Under the town center the state geologic map shows Salina Group (dolostone), from the Silurian, 422 to 445 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 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: Silurian, 428 to 445 million years old. About 20 mi of the line.
Dolostone. Age: Silurian, 422 to 445 million years old. About 4 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 Dunkirk reaches Lake Erie by way of the Blanchard, the Auglaize and the Maumee: about 190 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
95 miles of the trip are on the Blanchard.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Dunkirk; river miles along the main stem, rounded.
Dunkirk has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 21° in January. About 34 inches of rain fall in a normal year.
On November 14 Dunkirk normally reaches 52° and falls to 35°. The record high is 70°, in 1971; the record low 12°, in 1986. The most rain on this date, 1.78 in, fell in 1993.
Normals 1991–2020 and records since 1942 at Findlay Airport, 16 miles north, 140 ft lower. NOAA, through RCC-ACIS.
