The Linwood 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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81° on Nov. 15, 1993, the hottest reading for this week of the year since 1871. Next is 76° in 1955.
Linwood’s center stands about 100 ft above sea level. Within three miles the land runs from 0 ft to 300 ft, a difference of 300 ft: rolling country. Open water lies within three miles. The highest named summit within 15 miles is Hunting Hill, about 510 ft, 9 miles north.
The section below crosses 14 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 40×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Gneiss. Age: Precambrian. About 6 mi of the line.
Clay, sand. Age: Early Miocene, 16 to 23 million years old. About 2 mi of the line.
Sand. Age: Late Cretaceous, 72 to 84 million years old. About 2 mi of the line.
Mica-schist. Age: Paleozoic, 252 to 542 million years old. About 2 mi of the line.
Gneiss. Age: Paleozoic, 252 to 542 million years old. About 2 mi of the line.
Sand, clay. Age: Late Cretaceous, 94 to 100 million years old. About 2 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 8 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 Linwood reaches Delaware Bay and the Atlantic Ocean by way of the Delaware: about 45 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Linwood; river miles along the main stem, rounded.
Linwood has a humid subtropical climate. Summer afternoons average 88° in July; winter nights fall to about 26° in January. A normal year brings about 23 inches of snow; with the rain, that comes to about 44 inches of water.
On November 14 Linwood normally reaches 56° and falls to 39°. The record high is 76°, in 1955; the record low 19°, in 1986. The most rain on this date, 2.64 in, fell in 1972.
Normals 1991–2020 and records since 1871 from the Philadelphia Area threaded record (Philadelphia International Airport, 11 miles east-northeast). NOAA, through RCC-ACIS.
