The Springfield 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.
Springfield’s center stands about 250 ft above sea level. Within three miles the land runs from 70 ft to 340 ft, a difference of 270 ft: rolling country. The highest named summit within 15 miles is Diamond Rock Hill, about 700 ft, 14 miles northwest.
Under the town center the state geologic map shows Bryn Mawr Formation (sand, gravel), from the Miocene, 5.3 to 23 million years old.
The section below crosses 17 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 35×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sand, clay. Age: Pleistocene, less than 2.6 million years old. About 3 mi of the line.
Gneiss. Age: Precambrian. About 3 mi of the line.
Mica-schist. Age: Paleozoic, 252 to 542 million years old. About 2 mi of the line.
Sand. Age: Miocene, 5.3 to 23 million years old. About 2 mi of the line.
Sand, gravel. Age: Miocene, 5.3 to 23 million years old. About 2 mi of the line.
Granite, gneiss. Age: Paleozoic, 252 to 542 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. 11 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 Springfield reaches Delaware Bay and the Atlantic Ocean by way of Lewis Run, Darby Creek and the Delaware: about 65 river miles.
50 miles of the trip are on the Delaware.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Springfield; river miles along the main stem, rounded.
Springfield 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 Springfield 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, 6 miles southeast, 240 ft lower). NOAA, through RCC-ACIS.
