Heavy Rainfall Threat Tuesday May 18, 2021

Click HERE, HERE, and HERE an update concerning the heavy rain threat today into Wednesday.

Changes from previous update:

• The threat of heavy rainfall/flash flooding has expanded to include much of the area.

• The Flash Flood Watch has been expanded to include much of the area.

Overview: WHAT: MODERATE RISK of Heavy Rain WHEN: Through at least Wednesday morning WHERE: All of southeast Louisiana and most of south Mississippi CONFIDENCE: 

• We are confident that there will be thunderstorms across the area and that a few will produce heavy rainfall, especially this morning. We are less confident in exactly where the greatest threat will occur this afternoon and overnight.

Impacts:

• Rainfall of 3 to 6 inches is currently forecast for much of southeast Louisiana. Locally higher amounts will be possible. Rain amounts over south Mississippi are likely to be between 2 and 4 inches in most areas, with locally higher amounts possible.

• Widespread and significant flash flooding will be possible. High water rescues may become necessary in areas that receive the heaviest rainfall.

• As water drains into area rivers, flooding will be possible

The HERE hyperlinks graphics highlight the highest threat area, the Flash Flood Watch and expected rainfall amounts associated with this system.