The Limestone 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. 11, 2020, the hottest reading for this week of the year since 1924. Next is 71° in 1956.
Limestone’s center stands about 1,410 ft above sea level. Within three miles the land runs from 1,400 ft to 2,350 ft, a difference of 950 ft: steep hill country. The highest named summit within 15 miles is Hartzfelt Mountain, about 2,430 ft, 9 miles east.
Under the town center the state geologic map shows Conneaut Group, undivided (shale, sandstone), from the Late Devonian, 359 to 384 million years old.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 19×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale, sandstone. Age: Late Devonian, 359 to 384 million years old. About 11 mi of the line.
Shale. Age: Late Devonian, 359 to 384 million years old. About 4 mi of the line.
Sandstone, siltstone, shale. Age: Devonian to Carboniferous, 324 to 422 million years old. About 4 mi of the line.
Siltstone, conglomerate. Age: Late Devonian, 359 to 384 million years old. About 2 mi of the line.
Shale, sandstone. Age: Late Devonian to Carboniferous, 324 to 384 million years old. About 1 mi of the line.
Sandstone, siltstone, shale. Age: Late Devonian, 359 to 384 million years old. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 1 smaller unit 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 Limestone reaches the Gulf of America by way of Tunungwant Creek, the Allegheny, the Ohio and the Mississippi: about 2,200 river miles.
Lake on the way: Allegheny Reservoir.
970 miles of the trip are on the Ohio.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Limestone; river miles along the main stem, rounded.
Limestone has a warm-summer humid continental climate. Summer afternoons average 79° in July; winter nights fall to about 15° in January. About 47 inches of rain fall in a normal year.
On November 14 Limestone normally reaches 47° and falls to 30°. The record high is 65°, in 1989; the record low 8°, in 1996. The most rain on this date, 1.20 in, fell in 1972.
Normals 1991–2020 and records since 1924 at Allegany State Park, 8 miles northwest. NOAA, through RCC-ACIS.
