06/17/2026
⚠️ WEATHER ALERT⚠️
The threat of heavy rain and flash flooding continues to increase across our area.
Multiple rounds of showers and thunderstorms are expected through Friday, with the highest risk for significant impacts from Wednesday afternoon through Thursday night.
What to expect:
• Periods of heavy rain through the week
• Street flooding and flooding in low-lying areas
• Frequent lightning and wind gusts up to 40 to 50 mph
• Rising water levels in rivers, bayous, and streams
• Widespread rainfall totals of 3 to 6 inches, with some areas potentially receiving much more
The greatest concern is flash flooding Wednesday night through Thursday evening. If storms repeatedly move over the same area, isolated rainfall totals could exceed 8 to 10 inches, leading to road closures, flooded homes and businesses, and dangerous travel conditions.
There is also a low risk for isolated severe weather, including damaging winds and brief tornadoes, especially Wednesday and Thursday.
A Potential Tropical Cyclone (possible Tropical Storm Arthur) is expected to strengthen before making landfall near the Louisiana-Texas border. St. Tammany Parish is expected to experience periods of heavy rain, gusty winds, and elevated water levels through the end of the week.
St. Tammany Parish has opened a self-service sandbag station in Slidell located at 34783 Grantham College Drive.
Please stay weather aware, monitor forecasts, and avoid driving through flooded roadways. We will continue to share updates as conditions change.