The Brownsville 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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79° on Nov. 11, 2020, the hottest reading for this week of the year since 1976. Next is 76° in 2005.
Brownsville’s center stands about 790 ft above sea level. Within three miles the land runs from 740 ft to 1,240 ft, a difference of 500 ft: hilly country. The highest named summit within 15 miles is Fort Hill, about 1,590 ft, 11 miles east-northeast.
The section below crosses 6 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 29×. 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, shale, sandstone. Age: Carboniferous, 299 to 324 million years old. About 12 mi of the line.
Sandstone, shale. Age: Carboniferous to Permian, 252 to 324 million years old. About 4 mi of the line.
Shale, clastic. Age: Carboniferous, 299 to 324 million years old. About 3 mi of the line.
Shale. Age: Carboniferous, 299 to 324 million years old. About 2 mi of the line.
Sandstone, shale. Age: Permian, 252 to 299 million years old. About 1 mi of the line.
Sandstone. Age: Carboniferous, 299 to 324 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.
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 Brownsville reaches the Gulf of America by way of Redstone Creek, the Monongahela, the Ohio and the Mississippi: about 2,000 river miles.
970 miles of the trip are on the Ohio.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Brownsville; river miles along the main stem, rounded.
Brownsville has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 21° in January. A normal year brings about 24 inches of snow; with the rain, that comes to about 47 inches of water.
Normals 1991–2020 and records since 1976 at Connellsville 2 SSW, 15 miles east, 110 ft higher. NOAA, through RCC-ACIS.
