The Unadilla 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.
Chance of showers
Mostly cloudy
Mostly cloudy
Mostly sunny
Mostly sunny
Partly cloudy
Partly cloudy
73° on Nov. 11, 2020, the hottest reading for this week of the year since 1906. Next is 72° in 1909.
Unadilla’s center stands about 1,020 ft above sea level. Within three miles the land runs from 1,000 ft to 1,860 ft, a difference of 860 ft: hilly country. The highest named summit within 15 miles is Crane Hill, about 2,350 ft, 14 miles south-southeast.
Under the town center the state geologic map shows Oneonta Formation (shale), from the Middle Devonian to Late Devonian, 359 to 394 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 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. Age: Middle Devonian to Late Devonian, 359 to 394 million years old. About 12 mi of the line.
Shale, sandstone, conglomerate. Age: Late Devonian, 359 to 384 million years old. About 5 mi of the line.
Sandstone, conglomerate, shale. Age: Late Devonian, 359 to 384 million years old. About 4 mi of the line.
Shale, siltstone, sandstone. Age: Late Devonian, 359 to 384 million years old. About 3 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 Unadilla reaches Chesapeake Bay and the Atlantic Ocean by way of the Unadilla and the Susquehanna: about 410 river miles.
Lake on the way: Lake Aldred.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Unadilla; river miles along the main stem, rounded.
Unadilla has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 12° in January. A normal year brings about 75 inches of snow; with the rain, that comes to about 45 inches of water.
On November 14 Unadilla normally reaches 48° and falls to 28°. The record high is 68°, in 1989; the record low 11°, in 1986. The most rain on this date, 1.52 in, fell in 1972.
Normals 1991–2020 and records since 1906 at Norwich, 17 miles northwest. NOAA, through RCC-ACIS.
