The Rockport 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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7° on Nov. 14, 1955, the coldest reading for this week of the year since 1905. Next is 10° in 1911.
Rockport’s center stands about 230 ft above sea level. Within three miles the land runs from 190 ft to 4,770 ft, a difference of 4,580 ft: mountain country. The highest named summit within 15 miles is Bacon Peak, about 6,990 ft, 13 miles north-northeast.
Under the town center the state geologic map shows Glacial drift, undivided (sand, gravel), from the Pleistocene, less than 2.6 million years old.
The section below crosses 3 rock units mapped at the surface.
Heights every 0.1 mile from the Copernicus GLO-90 surface model; vertical exaggeration about 4×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Phyllite. Age: Jurassic to Early Cretaceous, 100 to 202 million years old. About 10 mi of the line.
Sand, gravel. Age: Pleistocene, less than 2.6 million years old. About 9 mi of the line.
Graywacke. Age: Late Devonian to Cretaceous, 66 to 384 million years old. About 4 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 Rockport reaches the Pacific Ocean by way of the Skagit, the South Fork Skagit and Freshwater Slough: about 65 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Rockport; river miles along the main stem, rounded.
Rockport has a warm-summer Mediterranean climate. Summer afternoons average 77° in August; winter nights fall to about 34° in January. A normal year brings about 16 inches of snow; with the rain, that comes to about 71 inches of water.
On November 14 Rockport normally reaches 49° and falls to 38°. The record high is 66°, in 1943; the record low 7°, in 1955. The most rain on this date, 2.09 in, fell in 2015.
Normals 1991–2020 and records since 1905 at Concrete Ppl Fish Station, 7 miles west-northwest. NOAA, through RCC-ACIS.
