The London Britain 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.
Partly cloudy
Mostly sunny
Partly cloudy
Sunny
Partly cloudy
Mostly sunny
Mostly sunny
80° on Nov. 15, 1993, the hottest reading for this week of the year since 1894. Next is 77° in 1973.
London Britain’s center stands about 340 ft above sea level. Within three miles the land runs from 140 ft to 450 ft, a difference of 310 ft: rolling country.
Under the town center the state geologic map shows "Glenarm Wissahickon" formation (mica-schist), from the Paleozoic, 252 to 542 million years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 30×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Mica-schist. Age: Paleozoic, 252 to 542 million years old. About 12 mi of the line.
Sand, clay, silt. Age: Early Cretaceous, 100 to 145 million years old. About 6 mi of the line.
Schist, gneiss. Age: Paleozoic, 252 to 542 million years old. About 4 mi of the line.
Mica-schist, quartzite. Age: Paleozoic, 252 to 542 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.
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 London Britain reaches Delaware Bay and the Atlantic Ocean by way of White Clay Creek, the Christina and the Delaware: about 65 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of London Britain; river miles along the main stem, rounded.
London Britain has a humid subtropical climate. Summer afternoons average 89° in July; winter nights fall to about 25° in January. About 47 inches of rain fall in a normal year.
On November 14 London Britain normally reaches 57° and falls to 36°. The record high is 75°, in 1955; the record low 19°, in 1986. The most rain on this date, 2.53 in, fell in 1972.
Normals 1991–2020 and records since 1894 at Newark Ag Farm, 6 miles south-southeast, 230 ft lower. NOAA, through RCC-ACIS.
