The Martinsville 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.
Mostly sunny
Mostly sunny; warmer
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Partly cloudy
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4° on Nov. 13, 2019, the coldest reading for this week of the year since 1922. Next is 5° in 1959.
Martinsville’s center stands about 610 ft above sea level. Within three miles the land runs from 580 ft to 850 ft, a difference of 270 ft: rolling country. The highest named summit within 15 miles is Cooks Hill, about 1,020 ft, 9 miles southeast.
Under the town center the state geologic map shows Borden Group (siltstone), from the Carboniferous, 324 to 359 million years old.
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.
Siltstone. Age: Carboniferous, 324 to 359 million years old. About 24 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 Martinsville reaches the Gulf of America by way of the White River, Big Bayou, the Wabash River Old Channel, the Old Channel Wabash, the Ohio and the Mississippi: about 1,370 river miles.
970 miles of the trip are on the Mississippi.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Martinsville; river miles along the main stem, rounded.
Martinsville has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 19° in January. A normal year brings about 17 inches of snow; with the rain, that comes to about 46 inches of water.
On November 14 Martinsville normally reaches 53° and falls to 32°. The record high is 78°, in 1955; the record low 4°, in 2019. The most rain on this date, 3.40 in, fell in 1993.
Normals 1991–2020 and records since 1922 at Martinsville 2 SW, 2 miles southwest. NOAA, through RCC-ACIS.
