The Monterey 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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71° on Nov. 11, 2006, the hottest reading for this week of the year since 1994. Next is 71° in 2011.
Monterey’s center stands about 2,900 ft above sea level. Within three miles the land runs from 2,690 ft to 4,030 ft, a difference of 1,340 ft: steep hill country. The highest named summit within 15 miles is Elleber Knob, about 4,580 ft, 8 miles west.
Under the town center the state geologic map shows Millboro Shale and Needmore Formation (shale, black-shale), from the Devonian, 359 to 422 million years old.
The section below crosses 12 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 8×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Limestone. Age: Silurian to Devonian, 359 to 445 million years old. About 6 mi of the line.
Shale, sandstone. Age: Devonian, 359 to 422 million years old. About 3 mi of the line.
Arenite, shale, sandstone. Age: Silurian, 422 to 445 million years old. About 3 mi of the line.
Shale, sandstone. Age: Devonian, 359 to 422 million years old. About 3 mi of the line.
Shale, black-shale. Age: Devonian, 359 to 422 million years old. About 2 mi of the line.
Siltstone, sandstone. Age: Devonian, 359 to 422 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. 6 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 Monterey reaches Chesapeake Bay and the Atlantic Ocean by way of West Strait Creek, Strait Creek, the South Branch Potomac and the Potomac: about 420 river miles.
290 miles of the trip are on the Potomac.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Monterey; river miles along the main stem, rounded.
Monterey has a warm-summer humid continental climate. Summer afternoons average 80° in July; winter nights fall to about 18° in January. A normal year brings about 39 inches of snow; with the rain, that comes to about 47 inches of water.
On November 14 Monterey normally reaches 53° and falls to 28°. The record high is 71°, in 2011; the record low 13°, in 2014. The most rain on this date, 0.84 in, fell in 2019.
Normals 1991–2020 and records since 1994 at Mustoe 1 SW, 8 miles south-southwest, 530 ft lower. NOAA, through RCC-ACIS.
