Rare “high-risk” flash flood alert issued as Nicholas nears Louisiana

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Southwest Louisiana is facing a “high risk” of flash flooding from Tropical Depression Nichols early Wednesday morning National Weather Service warned.

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why it matters: Such “high-risk” approaches are rarely issued anywhere in the US. There is also a moderate risk of flash-flooding in New Orleans, which is still hitting the state last month by Hurricane Ida. more than

The flood warning area covers more than half of Louisiana. Photo: National Weather Service/NOAA

Our thought bubble: The warning is due to a prior storm slowing forward momentum. As the bands of rain work east, they are moving into more saturated ground in the wake of Ida – increasing the risk of flash flooding across the rest of Louisiana as well as parts of Mississippi.


threat level: The slow-moving storm was expected to bring 5 to 10 inches of rain to parts of southern and central Louisiana, southern Mississippi, far southern Alabama and the western Florida panhandle early Friday. NHC said late Tuesday.

  • Isolated storm totals of 20 inches were possible from southern Louisiana to the far western Florida panhandle.
  • “In these areas, especially in urban areas, the effects of life-threatening flash floods are possible,” the NHC warned.

By numbers: According to the utility tracking site, more than 125,000 customers in Texas were without electricity and more than 75,000 others in Louisiana had no electricity Wednesday morning. power outage.us.

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big picture: Nichols made landfall as a Category 1 hurricane near Sargent Beach, Texas, early Tuesday.

  • It later weakened into a tropical depression, but heavy rain continued in the Houston metro area as it slowly made its way over southeastern Texas and southwestern Louisiana.

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