Tropical Arthur Remnants Cause Life‑Threatening Flooding and Active Tornado Watches on Gulf Coast

Overview

• A concentrated band of storms is moving over the New Orleans area on Thursday with radar and gauge reports showing 2 to 4+ inches of rain per hour and observed 3–4.5 inch hourly rates in Houma, making flash flooding likely and potentially life‑threatening.
• The Storm Prediction Center says Tornado Watch 348 remains in effect for eastern Louisiana and southern Mississippi and that supercells on the system’s southwest flank are capable of producing tornadoes, with a watch extension or replacement likely.
• The Weather Prediction Center expanded mesoscale flash‑flood concerns into southern and central Mississippi and western Alabama, warning that slow storm motion and very high precipitable water (about 2.2–2.6 inches) could yield localized 7–10 inch totals.
• A separate Severe Thunderstorm Watch 350 covers parts of western Virginia and eastern West Virginia for damaging winds to 70 mph and isolated tornadoes, and forecasters say additional watch issuance is possible across West Virginia into northwestern Virginia.
• Showers and storms are also expanding into southeast Kansas, southwest Missouri, northwest Arkansas and northeast Oklahoma with rainfall rates near 2 inches per hour and a risk of scattered flash flooding and localized 3–4 inch totals as watches and warnings are updated.