The Trilby 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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Sunny; warmer
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90° on Nov. 13, 2008, the hottest reading for this week of the year since 1895. Next is 90° in 2023.
Trilby’s center stands about 90 ft above sea level. Within three miles the land runs from 60 ft to 180 ft, a difference of 120 ft: gently rolling country. The highest named summit within 15 miles is Nursery Hill, about 270 ft, 10 miles south.
Under the town center the state geologic map shows Hawthorn Group, Undifferentiated (sand, clay), from the Miocene, 5.3 to 23 million years old.
The section below crosses 2 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: Miocene, 5.3 to 23 million years old. About 12 mi of the line.
Limestone. Age: Late Eocene, 34 to 38 million years old. About 12 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 Trilby reaches the Gulf of America by way of the Withlacoochee: about 90 river miles.
Lake on the way: Lake Rousseau.
70 miles of the trip are on the Withlacoochee.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Trilby; river miles along the main stem, rounded.
Trilby has a humid subtropical climate. Summer afternoons average 90° in July; winter nights fall to about 49° in January. About 54 inches of rain fall in a normal year.
On November 14 Trilby normally reaches 77° and falls to 57°. The record high is 88°, in 2008; the record low 33°, in 1906. The most rain on this date, 2.15 in, fell in 1941.
Normals 1991–2020 and records since 1895 at Saint Leo, 9 miles south-southwest. NOAA, through RCC-ACIS.
