The North Johns 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.
Sunny
Partly cloudy
Mostly sunny
Sunny
Mostly sunny
Mostly sunny
Mostly sunny
20° on Nov. 13, 2019, the coldest reading for this week of the year since 1977. Next is 21° in 1997.
North Johns’s center stands about 480 ft above sea level. Within three miles the land runs from 410 ft to 700 ft, a difference of 290 ft: rolling country. The highest named summit within 15 miles is Little Shades Mountain, about 860 ft, 12 miles east.
The section below crosses 8 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 40×. 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, siltstone, sandstone. Age: Carboniferous, 299 to 324 million years old. About 14 mi of the line.
Sandstone. Age: Carboniferous, 299 to 324 million years old. About 3 mi of the line.
Shale. Age: Carboniferous, 324 to 359 million years old. About 2 mi of the line.
Shale. Age: Carboniferous, 324 to 359 million years old. About 2 mi of the line.
Dolostone, chert. Age: Cambrian, 487 to 542 million years old. About 1 mi of the line.
Sandstone, shale, siltstone. Age: Carboniferous, 299 to 324 million years old. 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. 2 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 North Johns reaches Mobile Bay and the Gulf of America by way of Suck Branch, Blue Creek, Valley Creek, the Black Warrior, the Tombigbee and the Mobile: about 420 river miles.
170 miles of the trip are on the Tombigbee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of North Johns; river miles along the main stem, rounded.
North Johns has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 34° in January. About 56 inches of rain fall in a normal year, with about 1 inch of snow.
On November 14 North Johns normally reaches 66° and falls to 42°. The record high is 81°, in 1993; the record low 23°, in 1986. The most rain on this date, 2.09 in, fell in 1998.
Normals 1991–2020 and records since 1977 at Bessemer 3 WSW, 6 miles east-northeast. NOAA, through RCC-ACIS.
