Louisiana, 2010

Flash Flood and Coastal Flood in Louisiana, July 6 to 8, 2010

July 6 to 8, 2010 · NWS LCH · 3 events in 2 counties and zones

A small tropical low moved inland along the south central Louisiana coast from late in the evening hours on July 5 into the early morning hours of July 6, then continued northwest across southwest Louisiana into east Texas from July 7 into July 8. This system produced heavy rainfall and flash flooding across south central Louisiana, and minor coastal flooding along the southern Louisiana coast.

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
$500,000
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 LCH wrote it up.

A small tropical low moved inland along the south central Louisiana coast from late in the evening hours on July 5 into the early morning hours of July 6, then continued northwest across southwest Louisiana into east Texas from July 7 into July 8. This system produced heavy rainfall and flash flooding across south central Louisiana, and minor coastal flooding along the southern Louisiana coast.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lake Charles, LA wrote its last area forecast discussion before the first event at Jul 5, 11:00 PM CST, 1 hour earlier.

Area forecast discussion, Jul 5, 11:00 PM CST, 1 hour before
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In the hours before

Local storm report, Jul 5, 11:33 PM CST, 27 minutes before
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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 heavy rain, 1 flash flood, 1 coastal flood. Local standard time, as filed.

Heavy Rain, Iberia

When
July 6, 12:00 AM CST to 1:00 PM CST
Where
Iberia County, 2.14 mi NNW of Hubertville
Reported by
Mesonet
Coordinates
29.959, -91.711

Jeanerette LSU Ag Center measured 7.93 inches of rainfall from midnight through 2 PM CDT.

Flash Flood, Iberia

When
July 6, 6:00 AM CST to 5:00 PM CST
Where
Iberia County, 2.02 mi NNW of Derouen to 2.21 mi SSW of Patoutville
Cause
Heavy Rain
Property damage
$500,000
Reported by
Emergency Manager
Coordinates
29.997, -91.913

Iberia Parish Emergency Management and media reports indicate widespread flooding occurred across central and southern parts of the parish. At least 21 homes were reportedly flooded with the majority of flooded homes in Grand Marais and New Iberia. The First Baptist Church in Lydia was also flooded, along with an unknown number of businesses and other buildings. A total of 18 roads were closed due to flooding, with over a foot of water covering some roadways. Numerous cars stalled out in flood waters, and some high water rescues were performed.

Coastal Flood, Cameron

When
July 6, 10:42 PM CST to July 8, 1:24 PM CST
Where
Cameron forecast zone
Reported by
Official NWS Observations

Calcasieu Pass NOS Tide Gauge measured a peak high tide level of 3.75 feet at 730 AM CDT on July 7, and another peak high tide level of 3.67 feet at 130 AM CDT on July 8. Tide levels were above 3 feet MLLW for two extended periods of time, from 1042 PM CDT on July 6 through 3 PM CDT on July 7, and again from 1048 PM CDT on July 7 through 224 PM CDT on July 8. These high tides caused considerable coastal flooding in Cameron Parish, and the Cameron Pilot newspaper reported several roads in Cameron were underwater at the times of the peak high tides.

What these are

Heavy Rain
Rainfall totals unusual for the place and season that did not produce a flood.
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.
Coastal Flood
Flooding of coastal land by the sea, from storm surge, onshore wind or high tides.

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

The same day elsewhere

More

Every storm in Louisiana in 2010Every state in 2010This day in weather historyWarnings in Louisiana, July 2010

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: 252107, 252126, 252143.