Louisiana, 2024

Flash Flooding in Louisiana, September 5, 2024

September 5, 2024 · NWS LIX · 3 events in 2 counties and zones

A stalled boundary along the LA coast in association with a stationary low in the northeast Gulf created multiple rounds of heavy rain. This caused some isolated flash flooding along the I-12 corridor in Baton Rouge and St.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
3

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS LIX wrote it up.

A stalled boundary along the LA coast in association with a stationary low in the northeast Gulf created multiple rounds of heavy rain. This caused some isolated flash flooding along the I-12 corridor in Baton Rouge and St. Tammany Parish.

The radar

The Hammond radar (KHDC), 65 km away, was scanning. The volume nearest the first event began at 15:47 UTC.

Open the radar archive at this moment

Event by event

3 flash flood. Local standard time, as filed.

Flash Flood, East Baton Rouge

When
September 5, 9:45 AM CST to 11:15 AM CST
Where
East Baton Rouge County, 2.48 mi WSW of Foreman to 2.67 mi NE of Arlington
Cause
Heavy Rain
Reported by
Trained Spotter
Coordinates
30.360, -91.060

Spotter report of flooding in the Village St. George area.

Flash Flood, St. Tammany

When
September 5, 10:00 AM CST to 12:30 PM CST
Where
St. Tammany County, 1.38 mi WSW of North Slidell to 1.67 mi WSW of North Slidell
Cause
Heavy Rain
Reported by
Public
Coordinates
30.290, -89.800

Video on social media showing flooding on Gause Blvd.

Flash Flood, St. Tammany

When
September 5, 11:45 AM CST to 12:45 PM CST
Where
St. Tammany County, 3.58 mi E of North Slidell to 3.24 mi E of North Slidell
Cause
Heavy Rain
Reported by
Public
Coordinates
30.300, -89.720

Multiple streets flooded in the Cross Gates subdivision via pictures on social media.

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Louisiana in 2024Every state in 2024This day in weather historyWarnings in Louisiana, September 2024

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1218708, 1218709, 1218711.