The Tyro 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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3.70 inches of rain fell in two days, the most for this week of the year since records began in 1902. The next wettest, 3.65 inches, fell in 2020.
Tyro’s center stands about 830 ft above sea level. Within three miles the land runs from 660 ft to 850 ft, a difference of 190 ft: gently rolling country. The highest named summit within 15 miles is Three Hat Mountain, about 1,220 ft, 14 miles east-southeast.
Under the town center the state geologic map shows Granitic Rock, from the Late Mississippian to Permian, 265 to 325 million years old.
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 61×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Granitic. Age: Late Mississippian to Permian, 265 to 325 million years old. About 9 mi of the line.
Metagabbro, metadiorite. Age: Neoproterozoic to Paleozoic, 252 to 1,000 million years old. About 9 mi of the line.
Metavolcanic. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 4 mi of the line.
Slate, argillite. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 1 mi of the line.
Metagranite. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 1 mi of the line.
Metadacite, metarhyolite, metavolcanic. Age: Neoproterozoic to Cambrian, 487 to 1,000 million years old. About 0.3 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 Tyro reaches the Atlantic Ocean by way of South Potts Creek, the Yadkin, the Pee Dee, the Great Pee Dee, Schooner Creek and the Waccamaw: about 270 river miles.
Lake on the way: Lake Tillery.
150 miles of the trip are on the Great Pee Dee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Tyro; river miles along the main stem, rounded.
Tyro has a humid subtropical climate. Summer afternoons average 89° in July; winter nights fall to about 28° in January. About 46 inches of rain fall in a normal year, with about 3 inches of snow.
On November 14 Tyro normally reaches 63° and falls to 36°. The record high is 79°, in 1999; the record low 18°, in 1906. The most rain on this date, 2.00 in, fell in 2018.
Normals 1991–2020 and records since 1902 at Lexington, 7 miles east-northeast. NOAA, through RCC-ACIS.
