The Bayou L'Ourse 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
Chance of showers; warmer
Chance of showers; cooler
Mostly sunny; warmer
Mostly sunny
Partly cloudy
Mostly sunny
20° on Nov. 16, 1940, the coldest reading for this week of the year since 1893. Next is 24° in 1969.
Bayou L'Ourse’s center stands about 15 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 Natural Levees (silt, clay), from the Holocene, less than 12,000 years old.
The section below crosses 3 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.
Clay. Age: Holocene, less than 12,000 years old. About 12 mi of the line.
Silt, clay. Age: Holocene, less than 12,000 years old. About 7 mi of the line.
Clay. Age: Holocene, less than 12,000 years old. About 3 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 Bayou L'Ourse reaches the Gulf of America by way of the Bayou Chene and the Lower Atchafalaya: about 30 river miles.
Traced down the USGS NHDPlus V2.1 river network from the Census center point of Bayou L'Ourse; river miles along the main stem, rounded.
Bayou L'Ourse has a humid subtropical climate. Summer afternoons average 92° in July; winter nights fall to about 44° in January. About 71 inches of rain fall in a normal year.
On November 14 Bayou L'Ourse normally reaches 73° and falls to 52°. The record high is 88°, in 1909; the record low 27°, in 1907. The most rain on this date, 3.50 in, fell in 1914.
Normals 1991–2020 and records since 1893 at Thibodaux 4 SE, 17 miles east. NOAA, through RCC-ACIS.
