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Tropical Remnants Produce Life‑Threatening Flooding on the Central Gulf Coast

High precipitable water with stalled rainbands is producing hourly rates that will renew catastrophic flash floods across the Gulf Coast.

Overview

  • Widespread, life‑threatening flash flooding has occurred and continues along the central Gulf Coast, with flash‑flood emergencies issued for Avoyelles Parish, Louisiana and Pearl River County, Mississippi.
  • The heavy rain is tied to the surface low left by Tropical Storm Arthur and lingering mid‑level circulation, which have focused training rainbands over saturated ground.
  • Atmospheric moisture was extreme, with precipitable water values near 2.2–2.6 inches, producing highly efficient rainfall rates of 2–4 inches per hour and pockets of 5–10+ inches where bands persisted.
  • The Storm Prediction Center kept tornado watches and mesoscale discussions active for the central Gulf Coast because the same environment that fuels heavy rain also supports damaging wind gusts and brief tornadoes.
  • Forecasters say renewed heavy‑rain rounds are likely through Friday morning with threats fading later as the atmosphere becomes overworked; local NWS offices and River Forecast Centers are the primary sources for warnings and safety guidance.