The Selma 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.
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Partly cloudy
12° on Nov. 13, 1978, the coldest reading for this week of the year since 1893. Next is 15° in 1929.
Selma’s center stands about 1,330 ft above sea level. Within three miles the land runs from 1,300 ft to 3,460 ft, a difference of 2,160 ft: mountain country. The highest named summit within 15 miles is Kerby Peak, about 5,510 ft, 9 miles east-southeast.
Under the town center the state geologic map shows Alluvial deposits (sand, gravel, silt), from the Holocene, less than 12,000 years old.
The section below crosses 8 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 5×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Metaandesite, metabasalt, spilite. Age: Triassic to Jurassic, 145 to 252 million years old. About 6 mi of the line.
Peridotite, serpentinite. Age: Paleozoic to Jurassic, 145 to 542 million years old. About 5 mi of the line.
Sand, gravel, silt. Age: Holocene, less than 12,000 years old. About 4 mi of the line.
Mudstone, graywacke. Age: Late Jurassic, 153 to 164 million years old. About 3 mi of the line.
Andesite. Age: Late Jurassic, 145 to 164 million years old. About 2 mi of the line.
Mudstone, graywacke. Age: Late Jurassic, 153 to 164 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. 2 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 Selma reaches the Pacific Ocean by way of Clear Creek, Deer Creek, the Illinois and the Rogue: about 80 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Selma; river miles along the main stem, rounded.
Selma has a hot-summer Mediterranean climate. Summer afternoons average 91° in July; winter nights fall to about 35° in January. About 31 inches of rain fall in a normal year.
On November 14 Selma normally reaches 54° and falls to 39°. The record high is 73°, in 1995; the record low 13°, in 1978. The most rain on this date, 1.74 in, fell in 1966.
Normals 1991–2020 and records since 1893 at Grants Pass, 18 miles east-northeast, 400 ft lower. NOAA, through RCC-ACIS.
