The Menallen 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.
Menallen’s center stands about 1,210 ft above sea level. Within three miles the land runs from 920 ft to 1,280 ft, a difference of 360 ft: rolling country. The highest named summit within 15 miles is Devies Mountain, about 2,780 ft, 15 miles south.
Under the town center the state geologic map shows Casselman Formation (shale, clastic), from the Carboniferous, 299 to 324 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 10×. 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 4 mi of the line.
Sandstone. Age: Carboniferous, 324 to 359 million years old. About 2 mi of the line.
Sandstone, siltstone, shale. Age: Devonian to Carboniferous, 324 to 422 million years old. About 1 mi of the line.
Sandstone. Age: Carboniferous, 299 to 324 million years old. About 0.7 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 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 Menallen reaches the Gulf of America by way of Redstone Creek, the Monongahela, the Ohio and the Mississippi: about 2,020 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 Menallen; river miles along the main stem, rounded.
Menallen 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, 10 miles east-northeast, 310 ft lower. NOAA, through RCC-ACIS.
