The Porter 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
11° on Nov. 13, 2019, the coldest reading for this week of the year since 1951. Next is 14° in 1959.
Porter’s center stands about 340 ft above sea level. Within three miles the land runs from 240 ft to 370 ft, a difference of 130 ft: gently rolling country.
Under the town center the state geologic map shows Queenston Shale, from the Late Ordovician, 445 to 459 million years old.
The section below crosses 5 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 43×. 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: Late Ordovician, 445 to 459 million years old. About 7 mi of the line.
Dolostone. Age: Silurian, 425 to 434 million years old. About 5 mi of the line.
Shale. Age: Silurian, 422 to 428 million years old. About 1 mi of the line.
Sandstone. Age: Silurian, 428 to 445 million years old. About 0.6 mi of the line.
Sandstone, shale. Age: Silurian, 434 to 445 million years old. About 0.4 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.
Rain that falls on Porter runs straight into Lake Ontario. From the lake it goes down the St. Lawrence to the Atlantic.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Porter; river miles along the main stem, rounded.
Porter has a warm-summer humid continental climate. Summer afternoons average 81° in July; winter nights fall to about 17° in January. About 33 inches of rain fall in a normal year.
On November 14 Porter normally reaches 48° and falls to 32°. The record high is 65°, in 2009; the record low 23°, in 2004. The most rain on this date, 0.50 in, fell in 1961.
Normals 1991–2020 and records since 1951 at Niagara Falls International Airport, 10 miles south, 240 ft higher. NOAA, through RCC-ACIS.
