The Sharpsburg 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.
Partly cloudy
Mostly cloudy; warmer
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Sunny
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81° on Nov. 15, 1973, the hottest reading for this week of the year since 1891. Next is 80° in 1931.
Sharpsburg’s center stands about 430 ft above sea level. Within three miles the land runs from 290 ft to 900 ft, a difference of 610 ft: hilly country. The highest named summit within 15 miles is Black Rock, about 1,870 ft, 11 miles northeast.
Under the town center the state geologic map shows Conococheague Limestone, from the Cambrian to Early Ordovician, 471 to 497 million years old.
The section below crosses 10 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 14×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Limestone. Age: Cambrian, 487 to 542 million years old. About 8 mi of the line.
Dolostone. Age: Cambrian, 487 to 542 million years old. About 8 mi of the line.
Limestone, shale. Age: Cambrian, 487 to 542 million years old. About 4 mi of the line.
Limestone. Age: Early Ordovician, 471 to 487 million years old. About 1 mi of the line.
Limestone. Age: Cambrian to Early Ordovician, 471 to 497 million years old. About 0.8 mi of the line.
Quartzite. Age: Proterozoic to Cambrian, 487 to 2,500 million years old. About 0.8 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 4 smaller units 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 Sharpsburg reaches Chesapeake Bay and the Atlantic Ocean by way of Antietam Creek and the Potomac: about 190 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Sharpsburg; river miles along the main stem, rounded.
Sharpsburg has a hot-summer humid continental climate. Summer afternoons average 87° in July; winter nights fall to about 23° in January. About 39 inches of rain fall in a normal year.
On November 14 Sharpsburg normally reaches 56° and falls to 35°. The record high is 77°, in 1989; the record low 13°, in 1986. The most rain on this date, 1.41 in, fell in 1972.
Normals 1991–2020 and records since 1891 from the Martinsburg Area threaded record (Martinsburg Eastern West Virginia Regional Airport, 13 miles west-southwest, 110 ft higher). NOAA, through RCC-ACIS.
