The Mission Hills 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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90° on Nov. 16, 2008, the hottest reading for this week of the year since 1917. Next is 89° in 1990.
Mission Hills’s center stands about 350 ft above sea level. Within three miles the land runs from 70 ft to 930 ft, a difference of 860 ft: hilly country. The highest named summit within 15 miles is Sudden Peak, about 2,100 ft, 9 miles south-southwest.
Under the town center the state geologic map shows Older Quaternary alluvium and marine deposits (coarse-detrital), from the Pleistocene, less than 2.6 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 11×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Coarse-detrital. Age: Pleistocene, less than 2.6 million years old. About 9 mi of the line.
Sandstone, mudstone. Age: Oligocene to Pliocene, 2.6 to 34 million years old. About 6 mi of the line.
Coarse-detrital. Age: Pleistocene to Holocene, less than 2.6 million years old. About 3 mi of the line.
Sandstone, mudstone. Age: Miocene to Pleistocene, less than 23 million years old. About 2 mi of the line.
Sandstone, conglomerate. Age: Miocene to Pleistocene, less than 23 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.
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 Mission Hills reaches the Pacific Ocean by way of the Santa Ynez: about 10 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Mission Hills; river miles along the main stem, rounded.
Mission Hills has a warm-summer Mediterranean climate. Summer afternoons average 75° in September; winter nights fall to about 42° in December. About 15 inches of rain fall in a normal year.
On November 14 Mission Hills normally reaches 70° and falls to 46°. The record high is 88°, in 2008; the record low 30°, in 1919. The most rain on this date, 2.59 in, fell in 1953.
Normals 1991–2020 and records since 1917 at Lompoc, 3 miles south-southwest, 280 ft lower. NOAA, through RCC-ACIS.
