The McKenney 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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8° on Nov. 12, 2016, the coldest reading for this week of the year since 1972. Next is 14° in 1986.
McKenney’s center stands about 320 ft above sea level. Within three miles the land runs from 180 ft to 370 ft, a difference of 190 ft: gently rolling country.
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 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Metavolcanic. Age: Proterozoic, 542 to 2,500 million years old. About 7 mi of the line.
Biotite-gneiss. Age: Proterozoic, 542 to 2,500 million years old. About 7 mi of the line.
Diorite, gabbro. Age: Proterozoic, 542 to 2,500 million years old. About 4 mi of the line.
Mylonite, gneiss, cataclasite. Age: Proterozoic to Phanerozoic, less than 2,500 million years old. About 3 mi of the line.
Granite, granodiorite. Age: Proterozoic, 542 to 2,500 million years old. About 2 mi of the line.
Gravel, sand. Age: Pliocene, 2.6 to 5.3 million years old. About 0.4 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 McKenney reaches Albemarle Sound and the Atlantic Ocean by way of Smith Creek, the Nottoway and the Chowan: about 160 river miles.
85 miles of the trip are on the Chowan.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of McKenney; river miles along the main stem, rounded.
McKenney has a humid subtropical climate. Summer afternoons average 88° in July; winter nights fall to about 26° in January. About 47 inches of rain fall in a normal year, with about 3 inches of snow.
On November 14 McKenney normally reaches 61° and falls to 36°. The record high is 75°, in 1989; the record low 14°, in 1986. The most rain on this date, 0.70 in, fell in 1997.
Normals 1991–2020 and records since 1972 at Fort Pickett, 13 miles west-northwest. NOAA, through RCC-ACIS.
