The Fort Ann 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.
Mostly cloudy
Partly cloudy; warmer
Partly cloudy
Mostly sunny
Mostly sunny
Mostly sunny
Partly cloudy
70° on Nov. 15, 1956, the hottest reading for this week of the year since 1893. Next is 69° in 1909.
Fort Ann’s center stands about 160 ft above sea level. Within three miles the land runs from 130 ft to 750 ft, a difference of 620 ft: hilly country. The highest named summit within 15 miles is Black Mountain, about 2,640 ft, 13 miles north.
The section below crosses 16 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 11×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Metasedimentary, migmatite. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 3 mi of the line.
Graywacke. Age: Late Ordovician, 445 to 459 million years old. About 3 mi of the line.
Charnockite, gneiss. Age: Mesoproterozoic, 1 to 1.6 billion years old. About 3 mi of the line.
Dolostone, limestone. Age: Early Ordovician, 471 to 487 million years old. About 2 mi of the line.
Dolostone. Age: Cambrian to Early Ordovician, 471 to 497 million years old. About 2 mi of the line.
Slate, phyllite. Age: Early Ordovician to Middle Ordovician, 459 to 487 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. 10 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 Fort Ann reaches the St. Lawrence River by way of Halfway Creek, Wood Creek, the Mettawee and the Richelieu: about 230 river miles. The St. Lawrence carries it on to the Atlantic.
Lake on the way: Lake Champlain.
90 miles of the trip are on the Mettawee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Fort Ann; river miles along the main stem, rounded.
Fort Ann has a warm-summer humid continental climate. Summer afternoons average 82° in July; winter nights fall to about 10° in January. About 38 inches of rain fall in a normal year.
On November 14 Fort Ann normally reaches 47° and falls to 28°. The record high is 67°, in 1973; the record low 5°, in 1905. The most rain on this date, 1.45 in, fell in 2009.
Normals 1991–2020 and records since 1893 from the Glens Falls Area threaded record (Glens Falls/Floyd Bennett Memorial Airport, 8 miles southwest, 160 ft higher). NOAA, through RCC-ACIS.
