The Ronald 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.
12° on Nov. 14, 2014, the coldest reading for this week of the year since 1905. Next is 21° in 2012.
Ronald’s center stands about 2,360 ft above sea level. Within three miles the land runs from 2,030 ft to 3,610 ft, a difference of 1,580 ft: steep hill country. The highest named summit within 15 miles is Gallaher Head, about 6,720 ft, 15 miles north.
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.
Silt, sand. Age: Holocene, less than 12,000 years old. About 9 mi of the line.
Phyllite. Age: Jurassic to Early Cretaceous, 100 to 202 million years old. About 3 mi of the line.
Arkose. Age: Late Cretaceous to Eocene, 34 to 100 million years old. About 3 mi of the line.
Basalt. Age: Late Oligocene to Early Pliocene, 3.6 to 28 million years old. About 3 mi of the line.
Basalt, basaltic-andesite. Age: Late Eocene to Oligocene, 23 to 38 million years old. About 1 mi of the line.
Arkose. Age: Eocene to Early Oligocene, 28 to 56 million years old. About 1 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 Ronald reaches the Pacific Ocean by way of the Cle Elum, the Yakima and the Columbia: about 520 river miles.
Lake on the way: Lake Umatilla.
210 miles of the trip are on the Columbia.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Ronald; river miles along the main stem, rounded.
Ronald has a dry-summer warm-summer continental climate. Summer afternoons average 76° in July; winter nights fall to about 25° in January. About 50 inches of rain fall in a normal year.
Normals 1991–2020 and records since 1905 at Easton, 7 miles west, 190 ft lower. NOAA, through RCC-ACIS.