The Hutchinson Island South 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.
90° on Nov. 11, 2015, the hottest reading for this week of the year since 1935. Next is 89° in 1948.
Hutchinson Island South’s center stands about 9 ft above sea level. Within three miles the land runs from 0 ft to 40 ft, a difference of 40 ft: nearly flat ground. Open water lies within three miles.
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 64×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sand, limestone. Age: Pleistocene, less than 2.6 million years old. About 5 mi of the line.
Sand, clay. Age: Pleistocene to Holocene, less than 2.6 million years old. About 3 mi of the line.
Sand. 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.
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.
Hutchinson Island South has a tropical rainforest climate. Summer afternoons average 91° in July; winter nights fall to about 56° in January. About 63 inches of rain fall in a normal year.
On November 14 Hutchinson Island South normally reaches 80° and falls to 65°. The record high is 88°, in 1948; the record low 43°, in 1975. The most rain on this date, 2.75 in, fell in 1954.
Normals 1991–2020 and records since 1935 at Stuart, 8 miles south. NOAA, through RCC-ACIS.