The Summit 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.
Showers likely
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74° on Nov. 13, 2012, the hottest reading for this week of the year since 1985. Next is 72° in 2002.
Summit’s center stands about 2,110 ft above sea level. Within three miles the land runs from 1,420 ft to 2,410 ft, a difference of 990 ft: steep hill country. The highest named summit within 15 miles is Utsayantha Mountain, about 3,210 ft, 12 miles south.
Under the town center the state geologic map shows Moscow Formation (sandstone, shale), from the Middle Devonian, 384 to 388 million years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 12×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone, shale. Age: Middle Devonian, 384 to 388 million years old. About 10 mi of the line.
Shale, siltstone, sandstone. Age: Middle Devonian, 384 to 394 million years old. About 7 mi of the line.
Shale, siltstone, sandstone. Age: Middle Devonian, 384 to 394 million years old. About 4 mi of the line.
Black-shale. Age: Middle Devonian, 388 to 394 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.
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 Summit reaches Chesapeake Bay and the Atlantic Ocean by way of Charlotte Creek and the Susquehanna: about 460 river miles.
Lake on the way: Lake Aldred.
390 miles of the trip are on the Susquehanna.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Summit; river miles along the main stem, rounded.
Summit has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 11° in January. About 45 inches of rain fall in a normal year.
On November 14 Summit normally reaches 50° and falls to 28°. The record high is 65°, in 2011; the record low 8°, in 2019. The most rain on this date, 0.90 in, fell in 1997.
Normals 1991–2020 and records since 1985 at Lansing Manor, 11 miles southeast, 1,000 ft lower. NOAA, through RCC-ACIS.
