The Jacob City 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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Mostly sunny; warmer
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6.99 inches of rain fell in two days, the most for this week of the year since records began in 1939. The next wettest, 3.92 inches, fell in 1951.
Jacob City’s center stands about 170 ft above sea level. Within three miles the land runs from 120 ft to 200 ft, a difference of 80 ft: gently rolling country. The highest named summit within 15 miles is Falling Water Hill, about 360 ft, 13 miles southwest.
Under the town center the state geologic map shows Alum Bluff Group (sand, clay), from the Middle Miocene to Early Pliocene, 3.6 to 16 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, clay. Age: Middle Miocene to Early Pliocene, 3.6 to 16 million years old. About 20 mi of the line.
Clay. Age: Eocene to Miocene, 5.3 to 56 million years old. About 3 mi of the line.
Sand. Age: Holocene, less than 12,000 years old. About 0.6 mi of the line.
Sand. Age: Late Pliocene, 2.6 to 3.6 million years old. About 0.4 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.
Jacob City has a humid subtropical climate. Summer afternoons average 93° in July; winter nights fall to about 38° in January. About 61 inches of rain fall in a normal year.
On November 14 Jacob City normally reaches 73° and falls to 46°. The record high is 86°, in 2015; the record low 26°, in 1963. The most rain on this date, 1.77 in, fell in 1957.
Normals 1991–2020 and records since 1939 at Chipley, 11 miles southwest. NOAA, through RCC-ACIS.
