The Thynedale 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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3.62 inches of rain fell in two days, the most for this week of the year since records began in 1947. The next wettest, 3.20 inches, fell in 1979.
Thynedale’s center stands about 630 ft above sea level. Within three miles the land runs from 440 ft to 610 ft, a difference of 170 ft: gently rolling country.
The section below crosses 10 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 49×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Phyllite, slate. Age: Neoproterozoic, 542 to 1,000 million years old. About 4 mi of the line.
Gabbro. Age: Proterozoic, 542 to 2,500 million years old. About 3 mi of the line.
Phyllite, metavolcanic. Age: Neoproterozoic, 542 to 1,000 million years old. About 3 mi of the line.
Metavolcanic. Age: Neoproterozoic, 542 to 1,000 million years old. About 3 mi of the line.
Felsic-volcanic. Age: Neoproterozoic, 542 to 1,000 million years old. About 3 mi of the line.
Granodiorite, granite. Age: Proterozoic, 542 to 2,500 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. 4 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 Thynedale reaches Albemarle Sound and the Atlantic Ocean by way of Little Bluestone Creek, Bluestone Creek and the Roanoke: about 220 river miles.
Lake on the way: Roanoke Rapids Lake.
130 miles of the trip are on the Roanoke.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Thynedale; river miles along the main stem, rounded.
Thynedale has a humid subtropical climate. Summer afternoons average 89° in July; winter nights fall to about 29° in January. A normal year brings about 5 inches of snow; with the rain, that comes to about 46 inches of water.
On November 14 Thynedale normally reaches 62° and falls to 38°. The record high is 78°, in 1989; the record low 18°, in 1986. The most rain on this date, 0.70 in, fell in 1972.
Normals 1991–2020 and records since 1947 at Chase City, 3 miles south, 220 ft lower. NOAA, through RCC-ACIS.
