The Greensboro 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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69° on Nov. 12, 2002, the hottest reading for this week of the year since 1993. Next is 67° in 2006.
Greensboro’s center stands about 1,400 ft above sea level. Within three miles the land runs from 1,160 ft to 2,010 ft, a difference of 850 ft: hilly country. The highest named summit within 15 miles is Wheelock Mountain, about 2,780 ft, 7 miles east.
Under the town center the state geologic map shows Waits River Formation - carbonaceous phyllite and limestone member (phyllite, limestone), from the Silurian to Early Devonian, 394 to 425 million years old.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 12×. 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, limestone. Age: Silurian to Early Devonian, 394 to 425 million years old. About 12 mi of the line.
Quartzite, phyllite, mica-schist. Age: Early Devonian, 404 to 414 million years old. About 5 mi of the line.
Granofels, quartzite. Age: Cambrian to Early Ordovician, 471 to 542 million years old. About 4 mi of the line.
Metasandstone, metacarbonate, phyllite. Age: Silurian to Early Devonian, 394 to 425 million years old. About 1 mi of the line.
Quartzite. Age: Early Devonian, 394 to 422 million years old. About 0.8 mi of the line.
Granite, granodiorite. Age: Devonian, 359 to 422 million years old. About 0.5 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 1 smaller unit 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 Greensboro reaches the St. Lawrence River by way of Stanley Brook, Greensboro Brook, the Lamoille and the Richelieu: about 200 river miles. The St. Lawrence carries it on to the Atlantic.
Lake on the way: Lake Champlain.
80 miles of the trip are on the Richelieu.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Greensboro; river miles along the main stem, rounded.
Greensboro has a cold desert climate. Summer afternoons average 77° in July; winter nights fall to about 3° in January. Barely 0.0 inches of rain fall in a normal year.
Normals 1991–2020 and records since 1993 at Morrisville Stowe State Airport, 16 miles west, 660 ft lower. NOAA, through RCC-ACIS.
