Flash Flood Warning Issued for Assumption, Lafourche, Terrebonne Parishes LA
This alert is no longer in effect.
NOAA issued it on July 20, 2026, 5 weeks ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS New Orleans has issued a Flash Flood Warning for southeastern Assumption, northwestern Lafourche, and northeastern Terrebonne Parishes until 5:30 AM CDT June 18.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Southeastern Louisiana
- Issued
- July 20, 2026
- Issuing authority
- NWS New Orleans LA
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 5 weeks ago; use the issuing agency's live warning service for current conditions in Southeastern Louisiana.
Alert Details
Flash Flood Warning issued by NWS New Orleans LA. Effective from June 18 at 2:31 AM CDT until June 18 at 5:30 AM CDT. Severity: Severe. Urgency: Immediate. Certainty: Likely.
Affected Areas
Southeastern Assumption Parish, northwestern Lafourche Parish, and northeastern Terrebonne Parish in southeastern Louisiana. Locations that will experience flash flooding include Houma, Thibodaux, Gray, Bayou Cane, Schriever, Raceland, Chackbay, and Labadieville.
What You Should Do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding.
Expected Conditions
Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 4 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly. Hazard: Flash flooding caused by thunderstorms. Impact: Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.
Timeline
Alert effective June 18 at 2:31 AM CDT. Expires June 18 at 5:30 AM CDT.
Original source: NOAA Official Notice ↗
Related Weather Alerts
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Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,171 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to July 20, 2026.
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