The Warren 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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69° on Nov. 13, 1999, the hottest reading for this week of the year since 1856. Next is 68° in 1899.
Warren’s center stands about 50 ft above sea level. Within three miles the land runs from 0 ft to 560 ft, a difference of 560 ft: hilly country. The highest named summit within 15 miles is Long Mountain, about 2,250 ft, 13 miles west.
Under the town center the state geologic map shows Glaciofluvial, lacustrine, and pediment sedimentary deposits (silt, sand, gravel), from the Pleistocene, less than 2.6 million years old.
The section below crosses 7 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 9×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Basalt. Age: Miocene, 5.3 to 23 million years old. About 7 mi of the line.
Conglomerate. Age: Pliocene, 2.6 to 5.3 million years old. About 5 mi of the line.
Silt, sand, gravel. Age: Pleistocene, less than 2.6 million years old. About 3 mi of the line.
Silt, sand. Age: Holocene, less than 12,000 years old. About 3 mi of the line.
Sandstone, siltstone. Age: Late Eocene to Early Miocene, 16 to 38 million years old. About 2 mi of the line.
Sand, gravel, silt. Age: Holocene, less than 12,000 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. 1 smaller unit 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 Warren reaches the Pacific Ocean by way of McNulty Creek, the Multnomah Channel and the Columbia: about 90 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Warren; river miles along the main stem, rounded.
Warren has a warm-summer Mediterranean climate. Summer afternoons average 79° in August; winter nights fall to about 32° in January. About 42 inches of rain fall in a normal year.
On November 14 Warren normally reaches 52° and falls to 36°. The record high is 68°, in 1899; the record low 15°, in 1978. The most rain on this date, 2.33 in, fell in 1966.
Normals 1991–2020 and records since 1856 at Vancouver 4 NNE, 14 miles southeast, 170 ft higher. NOAA, through RCC-ACIS.
