The Hulmeville 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.
82° on Nov. 15, 1993, the hottest reading for this week of the year since 1915. Next is 79° in 1973.
Hulmeville’s center stands about 80 ft above sea level. Within three miles the land runs from 20 ft to 240 ft, a difference of 220 ft: rolling country. The highest named summit within 15 miles is Buckingham Mountain, about 570 ft, 14 miles north-northwest.
Under the town center the state geologic map shows Wissahickon Formation (mica-schist), from the Paleozoic, 252 to 542 million years old.
The section below crosses 9 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 45×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sand, clay. Age: Pleistocene, less than 2.6 million years old. About 6 mi of the line.
Gneiss. Age: Precambrian. About 4 mi of the line.
Mica-schist. Age: Paleozoic, 252 to 542 million years old. About 3 mi of the line.
Quartzite, schist. Age: Cambrian, 487 to 542 million years old. About 3 mi of the line.
Sand. Age: Miocene, 5.3 to 23 million years old. About 2 mi of the line.
Gneiss. Age: Precambrian. About 1 mi of the line.
From the USGS State Geologic Map Compilation (Horton and others, 2017), the states’ geologic maps joined at a common scale. 3 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 Hulmeville reaches Delaware Bay and the Atlantic Ocean by way of Neshaminy Creek and the Delaware: about 90 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Hulmeville; river miles along the main stem, rounded.
Hulmeville has a hot-summer humid continental climate. Summer afternoons average 86° in July; winter nights fall to about 22° in January. A normal year brings about 20 inches of snow; with the rain, that comes to about 51 inches of water.
On November 14 Hulmeville normally reaches 55° and falls to 33°. The record high is 76°, in 1973; the record low 17°, in 1920. The most rain on this date, 2.23 in, fell in 1972.
Normals 1991–2020 and records since 1915 at Neshaminy Falls, 2 miles west. NOAA, through RCC-ACIS.