The Florence 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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Partly cloudy
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3.80 inches of rain fell in two days, the most for this week of the year since records began in 1971. The next wettest, 3.19 inches, fell in 2017.
Florence’s center stands about 40 ft above sea level. Within three miles the land runs from 0 ft to 530 ft, a difference of 530 ft: hilly country. Open water lies within three miles. The highest named summit within 15 miles is Mount Grayback, about 2,360 ft, 13 miles east-southeast.
Under the town center the state geologic map shows Lacustrine and fluvial sedimentary rocks (clay, silt, sand), from the Pleistocene, 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 10×. The colored band under the surface is the rock the state geologic map shows at the surface, not a picture of what lies beneath.
Sandstone. Age: Middle Eocene, 38 to 48 million years old. About 9 mi of the line.
Sand. Age: Holocene, less than 12,000 years old. About 5 mi of the line.
Clay, silt, sand. Age: Pleistocene, less than 2.6 million years old. About 3 mi of the line.
Basalt. Age: Late Eocene, 34 to 38 million 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.
A raindrop that lands in Florence reaches the Pacific Ocean by way of Munsel Creek and the Siuslaw: about 7 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Florence; river miles along the main stem, rounded.
Florence has a warm-summer Mediterranean climate. Summer afternoons average 67° in July; winter nights fall to about 38° in February. About 68 inches of rain fall in a normal year.
On November 14 Florence normally reaches 53° and falls to 42°. The record high is 67°, in 1999; the record low 26°, in 1978. The most rain on this date, 2.00 in, fell in 1973.
Normals 1991–2020 and records since 1971 at Honeyman State Park, 4 miles south. NOAA, through RCC-ACIS.
