‘High-Risk’ Flash Flood Alert Issued for Southwest Louisiana Amid Tropical Depression Nicholas

A satellite image shows Tropical Storm Nicholas in the Gulf of Mexico, on Sept. 12, 2021. NOAA/Handout via Reuters

The National Weather Service on Sept. 15 warned that Southwest Louisiana faces a “high risk” of flash flooding from Tropical Depression Nicholas.

Such “high risk” warnings, the most dire and severe type of warnings, are rarely issued anywhere in the United States.