The Convoy 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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77° on Nov. 11, 2020, the hottest reading for this week of the year since 1893. Next is 75° in 1927.
Convoy’s center stands about 790 ft above sea level. Within three miles the land runs from 760 ft to 830 ft, a difference of 70 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, 422 to 445 million years old. About 18 mi of the line.
Limestone, dolostone. Age: Silurian, 422 to 445 million years old. About 7 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 Convoy reaches Lake Erie by way of Hagerman Creek, Prairie Creek, the Little Auglaize, the Auglaize and the Maumee: about 110 river miles. From there it moves on through the Great Lakes, over Niagara Falls and down the St. Lawrence to the Atlantic.
65 miles of the trip are on the Maumee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Convoy; river miles along the main stem, rounded.
Convoy has a hot-summer humid continental climate. Summer afternoons average 85° in July; winter nights fall to about 18° in January. A normal year brings about 17 inches of snow; with the rain, that comes to about 40 inches of water.
On November 14 Convoy normally reaches 50° and falls to 33°. The record high is 72°, in 1956; the record low 5°, in 2019. The most rain on this date, 1.09 in, fell in 1897.
Normals 1991–2020 and records since 1893 at Van Wert 1 S, 8 miles southeast. NOAA, through RCC-ACIS.
