07/21/2026
π΄ 10:30 AM Update β July 21, 2026
Tropical Storm Bertha
Livingston Parish residents should continue to monitor Tropical Storm Bertha as it moves through the northern Gulf. While no significant changes have been made to the expected impacts for our area, officials continue to closely monitor the storm's track and intensity.
Key Updates
β’ No significant changes to expected impacts for Southeast Louisiana.
β’ The Storm Surge Watch has been replaced by a Coastal Flood Warning.
β’ Coastal Flood Advisories are now in effect around Lake Pontchartrain and along the open coast west of the Mississippi River.
β’ The Tropical Storm Watch has been upgraded to a Tropical Storm Warning for coastal Jefferson and coastal Lafourche Parishes.
Current Situation
Tropical Storm Bertha has shifted slightly north of previous forecasts but is still expected to turn westward later today or tonight. Current forecasts indicate the storm will move across or near the Southeast Louisiana coast Tuesday into Wednesday.
At this time, rapid intensification is not expected due to current environmental conditions.
Confidence Level
If the current forecast track holds, confidence is high that our region will experience minor to moderate impacts.
Potential Impacts (Wednesday through Thursday Morning)
π Storm Surge (Coastal Areas)
β’ 2β4 feet of inundation above ground level possible in immediate coastal areas east of the Mississippi River.
β’ 1β3 feet of inundation possible elsewhere along the coast.
β’ Some low-lying coastal roads could become impassable.
β’ Flooding of unelevated structures and under-home storage areas is possible.
β’ Minor to moderate beach erosion may occur.
β’ Damage to docks, marinas, and piers is possible.
π¨ Wind
β’ Tropical storm-force wind gusts are likely, especially near the coast.
β’ Lightweight outdoor items may be blown around.
β’ Minor damage to porches, awnings, sheds, and similar structures is possible.
β’ Downed tree limbs and isolated power outages may occur.
π§οΈ Rainfall
Rainfall amounts remain highly dependent on the final track of Bertha.
β’ Many areas may receive less than 1 inch of rainfall.
β’ Coastal portions of Southeast Louisiana could receive 2β4 inches of rain.
β’ Isolated heavy downpours may cause localized street flooding.
πͺοΈ Tornado Threat
At this time, tornado development appears unlikely since the majority of thunderstorms associated with Bertha are expected to remain over water.
π₯ Heat Remains a Concern
Even as Tropical Storm Bertha moves through the region, dangerous heat will continue to impact Livingston Parish and surrounding areas.
β’ Heat index values of 107Β°β111Β° are expected today.
β’ Heat indices could be even higher on Wednesday.
β’ Limited cloud cover and rainfall are expected north of the storm's center, providing little relief from the heat.
What You Should Do
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Continue monitoring official forecasts and updates.
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Secure loose outdoor items.
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Have multiple ways to receive weather warnings.
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Stay hydrated and limit prolonged outdoor activity during peak heat.
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Never drive through flooded roadways.
The Livingston Parish Office of Homeland Security and Emergency Preparedness will continue to monitor Tropical Storm Bertha and provide updates as conditions warrant.