The Royal Oak 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 cloudy
Mostly cloudy; warmer
Mostly sunny
Sunny
Mostly sunny
Partly cloudy
Partly cloudy
9° on Nov. 13, 2019, the coldest reading for this week of the year since 1934. Next is 13° in 1959.
Royal Oak’s center stands about 670 ft above sea level. Within three miles the land runs from 640 ft to 700 ft, a difference of 60 ft: nearly flat ground.
Under the town center the state geologic map shows Bedford Shale, from the Late Devonian, 359 to 384 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 47×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Shale. Age: Carboniferous, 324 to 359 million years old. About 10 mi of the line.
Limestone. Age: Middle Devonian, 384 to 394 million years old. About 5 mi of the line.
Black-shale. Age: Late Devonian, 359 to 384 million years old. About 4 mi of the line.
Limestone. Age: Middle Devonian, 384 to 394 million years old. About 1 mi of the line.
Shale. Age: Late Devonian, 359 to 384 million years old. About 1 mi of the line.
Black-shale. Age: Devonian to Carboniferous, 324 to 422 million years old. About 0.9 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.
Royal Oak has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 20° in January. About 30 inches of rain fall in a normal year.
On November 14 Royal Oak normally reaches 49° and falls to 35°. The record high is 67°, in 1973; the record low 17°, in 1986. The most rain on this date, 1.07 in, fell in 1957.
Normals 1991–2020 and records since 1934 at Detroit City Airport, 8 miles east-southeast. NOAA, through RCC-ACIS.
