The Tyrone 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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79° on Nov. 15, 2005, the hottest reading for this week of the year since 1994. Next is 79° in 2011.
Tyrone’s center stands about 980 ft above sea level. Within three miles the land runs from 850 ft to 1,010 ft, a difference of 160 ft: gently rolling country.
Under the town center the state geologic map shows Porphyritic granite, from the Precambrian to Paleozoic.
The section below crosses 11 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 60×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Granite. Age: Precambrian to Paleozoic. About 10 mi of the line.
Amphibolite, biotite-gneiss, mica-schist. Age: Precambrian to Paleozoic. About 5 mi of the line.
Mica-schist. Age: Precambrian to Paleozoic. About 3 mi of the line.
Hornblende-gneiss. Age: Precambrian to Paleozoic. About 3 mi of the line.
Schist. Age: Precambrian to Paleozoic. About 0.8 mi of the line.
Amphibolite, mica-schist, biotite-gneiss. Age: Precambrian to Paleozoic. About 0.8 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 5 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 Tyrone reaches the Gulf of America by way of Kedron Creek, Flat Creek, Line Creek, the Flint and the Apalachicola: about 420 river miles.
290 miles of the trip are on the Flint.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Tyrone; river miles along the main stem, rounded.
Tyrone has a humid subtropical climate. Summer afternoons average 91° in July; winter nights fall to about 34° in January. About 49 inches of rain fall in a normal year.
On November 14 Tyrone normally reaches 66° and falls to 41°. The record high is 79°, in 2011; the record low 22°, in 2013. The most rain on this date, 0.79 in, fell in 2024.
Normals 1991–2020 and records since 1994 at Peachtree City Falcon Field, 9 miles south, 190 ft lower. NOAA, through RCC-ACIS.
