The Ona 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.
Mostly sunny
Sunny; warmer
Mostly sunny
Partly cloudy
Partly cloudy
Mostly sunny
Partly cloudy
91° on Nov. 14, 2008, the hottest reading for this week of the year since 1933. Next is 91° in 2018.
Ona’s center stands about 90 ft above sea level. Within three miles the land runs from 70 ft to 120 ft, a difference of 50 ft: nearly flat ground.
Under the town center the state geologic map shows Hawthorn Group, Peace River Formation (sand, clay, dolostone), from the Middle Miocene to Pliocene, 2.6 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, dolostone. Age: Middle Miocene to Pliocene, 2.6 to 16 million years old. About 11 mi of the line.
Sand, clay, phosphorite. Age: Middle Miocene to Pliocene, 2.6 to 16 million years old. About 10 mi of the line.
Sand. Age: Late Pliocene to Pleistocene, less than 3.6 million years old. About 3 mi of the line.
Sand, clay. Age: Pleistocene to Holocene, less than 2.6 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 Ona reaches the Gulf of America by way of Oak Creek and the Peace: about 60 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Ona; river miles along the main stem, rounded.
Ona has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 48° in January. About 52 inches of rain fall in a normal year.
On November 14 Ona normally reaches 80° and falls to 56°. The record high is 91°, in 2018; the record low 35°, in 1968. The most rain on this date, 7.60 in, fell in 1997.
Normals 1991–2020 and records since 1933 at Wauchula, 9 miles east-northeast. NOAA, through RCC-ACIS.
