Excessive Rainfall and Tropical Storm in the South; Severe Thunderstorms in the Midwest
Excessive rainfall may produce considerable, potentially life-threatening, flooding across the lower Mississippi River Valley and central Great Lakes region through tonight. Tropical Storm Arthur will move northeastward along the Texas coast today and then move inland over southwestern Louisiana by tonight. An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana. Read More >
| NWS Forecast for: Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM (GMZ572) Issued by: National Weather Service New Orleans/Baton Rouge, LA Last Update: 535 AM CDT Wed Jun 17 2026 | |
Today: South winds around 20 knots with gusts up to 30 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave detail: south 7 feet at 7 seconds. A chance of showers. A slight chance of thunderstorms early this morning, then a chance of thunderstorms late this morning and afternoon. Tonight: South winds 20 to 25 knots with gusts up to 30 knots. Seas 6 to 7 feet, occasionally to 9 feet, building to 7 to 9 feet, occasionally to 11 feet after midnight. Wave detail: south 7 feet at 7 seconds, becoming south 8 feet at 7 seconds. A chance of showers and thunderstorms, mainly in the evening. Thursday: South winds 20 to 25 knots with gusts up to 30 knots. Seas 7 to 8 feet, occasionally to 10 feet. Wave detail: south 8 feet at 7 seconds. A slight chance of showers and thunderstorms. Thursday Night: South winds around 20 knots with gusts up to 25 knots. Seas 6 to 7 feet, occasionally to 9 feet. Wave detail: south 7 feet at 8 seconds. Friday: South winds 15 to 20 knots with gusts up to 25 knots, diminishing to 10 to 15 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: south 6 feet at 7 seconds. Friday Night: South winds around 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: south 5 feet at 8 seconds and southwest 1 foot at 7 seconds. Saturday: South winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: southwest 4 feet at 7 seconds. A slight chance of showers and thunderstorms in the afternoon. Saturday Night: South winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: south 3 feet at 7 seconds. Sunday: South winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: south 3 feet at 6 seconds. Sunday Night: South winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: south 3 feet at 6 seconds. winds and seas higher in and near thunderstorms. | |
| Zone Forecast: Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM (GMZ572) | |
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