The Sussex 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
Partly cloudy; warmer
Partly cloudy
Mostly sunny
Sunny
Mostly sunny
Mostly sunny
75° on Nov. 16, 1928, the hottest reading for this week of the year since 1880. Next is 75° in 1993.
Sussex’s center stands about 430 ft above sea level. Within three miles the land runs from 390 ft to 850 ft, a difference of 460 ft: hilly country. The highest named summit within 15 miles is Kittatinny Mountain, about 1,780 ft, 8 miles north-northwest.
Under the town center the state geologic map shows Ramseyburg Member (graywacke, siltstone), from the Middle Ordovician to Late Ordovician, 445 to 471 million years old.
The section below crosses 17 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 16×. 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, sandstone. Age: Late Ordovician, 445 to 459 million years old. About 5 mi of the line.
Graywacke, siltstone. Age: Middle Ordovician to Late Ordovician, 445 to 471 million years old. About 4 mi of the line.
Dolostone. Age: Cambrian to Early Ordovician, 471 to 497 million years old. About 3 mi of the line.
Siltstone, sandstone. Age: Silurian, 422 to 428 million years old. About 3 mi of the line.
Biotite-gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 2 mi of the line.
Gneiss. Age: Mesoproterozoic, 1 to 1.6 billion 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. 11 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 Sussex reaches New York Harbor and the Atlantic Ocean by way of Clove Brook, Papakating Creek and the Hudson: about 180 river miles.
90 miles of the trip are on the Hudson.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Sussex; river miles along the main stem, rounded.
Sussex has a hot-summer humid continental climate. Summer afternoons average 84° in July; winter nights fall to about 16° in January. A normal year brings about 43 inches of snow; with the rain, that comes to about 47 inches of water.
On November 14 Sussex normally reaches 50° and falls to 30°. The record high is 71°, in 1989; the record low 12°, in 1905. The most rain on this date, 1.40 in, fell in 1972.
Normals 1991–2020 and records since 1880 at Port Jervis, 13 miles north-northwest, 150 ft higher. NOAA, through RCC-ACIS.
