The Timberline-Fernwood 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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76° on Nov. 13, 2025, the hottest reading for this week of the year since 1969. Next is 71° in 1973.
Timberline-Fernwood’s center stands about 6,780 ft above sea level. Within three miles the land runs from 6,600 ft to 7,930 ft, a difference of 1,330 ft: steep hill country. The highest named summit within 15 miles is San Francisco Mountain, about 12,570 ft, 7 miles west-northwest.
Under the town center the state geologic map shows Quaternary surficial deposits, undivided (sand, silt, clay), from the Pleistocene to Holocene, less than 2 million years old.
The section below crosses 4 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 3×. 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: Early Pliocene to Holocene, less than 4 million years old. About 11 mi of the line.
Rhyolite, dacite, andesite. Age: Early Pliocene to Holocene, less than 4 million years old. About 9 mi of the line.
Sand, silt, clay. Age: Pleistocene to Holocene, less than 2 million years old. About 4 mi of the line.
Sandstone, limestone. Age: Permian, 270 to 280 million years old. About 0.5 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.
A raindrop that lands in Timberline-Fernwood reaches the Gulf of California by way of San Francisco Wash, Canyon Diablo Wash, the Little Colorado and the Colorado: about 890 river miles.
Lakes on the way: Lake Mead, Lake Mohave and Lake Havasu.
290 miles of the trip are on the Colorado.
Seldom reaches the sea. Dams and canals now take nearly all of the Colorado before its old delta in Mexico.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Timberline-Fernwood; river miles along the main stem, rounded.
Timberline-Fernwood has a dry-summer warm-summer continental climate. Summer afternoons average 84° in July; winter nights fall to about 13° in January. A normal year brings about 49 inches of snow; with the rain, that comes to about 17 inches of water.
On November 14 Timberline-Fernwood normally reaches 54° and falls to 19°. The record high is 67°, in 2017; the record low −10°, in 1985. The most rain on this date, 0.25 in, fell in 1978.
Normals 1991–2020 and records since 1969 at Sunset Crater National Monument, 4 miles north, 200 ft higher. NOAA, through RCC-ACIS.
