The Fernandina Beach 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.
86° on Nov. 16, 1961, the hottest reading for this week of the year since 1892. Next is 86° in 2018.
Fernandina Beach’s center stands about 20 ft above sea level. Within three miles the land runs from 0 ft to 60 ft, a difference of 60 ft: nearly flat ground. Open water lies within three miles.
Under the town center the state geologic map shows Beach ridge and dune (sand, clay), from the Pleistocene to Holocene, less than 2.6 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 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. Age: Holocene, less than 12,000 years old. About 4 mi of the line.
Fine-detrital. Age: Holocene, less than 12,000 years old. About 2 mi of the line.
Sand, clay. Age: Pleistocene to Holocene, less than 2.6 million years old. About 2 mi of the line.
Sand, clay. Age: Pleistocene to Holocene, less than 2.6 million years old. About 0.9 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 Fernandina Beach reaches the Atlantic Ocean by way of Egans Creek, the Amelia and the Saint Marys: about 7 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Fernandina Beach; river miles along the main stem, rounded.
Fernandina Beach has a humid subtropical climate. Summer afternoons average 91° in July; winter nights fall to about 45° in January. About 50 inches of rain fall in a normal year.
On November 14 Fernandina Beach normally reaches 73° and falls to 56°. The record high is 85°, in 1915; the record low 36°, in 1984. The most rain on this date, 1.95 in, fell in 1954.
Normals 1991–2020 and records since 1892 at Fernandina Beach, here. NOAA, through RCC-ACIS.