The National Weather Service in New Orleans issued a flash-flood warning for north-central Jefferson Parish, including Metairie, at 5:57 p.m. Central Daylight Time Saturday, October 31.
The warning continues until 9 p.m. CDT. Forecasters said radar indicated thunderstorms producing heavy rain across the warned area, where two to four inches had already fallen.
The weather service described flash flooding as underway or expected to begin shortly. Its bulletin identifies urban areas, highways, streets, underpasses and other poorly drained or low-lying locations as places at risk.
The rainfall range is the agency’s estimate for the warned area at issuance. It should not be read as a measurement from every neighborhood, nor does the notice establish that every road in Jefferson Parish is closed.
Metairie is specifically named among the locations expected to experience flooding. The warning covers the north-central portion of the parish, rather than the whole New Orleans metropolitan region.
This report concerns the October 31 evening warning and the conditions stated in that official bulletin. The 9 p.m. expiration is the warning’s scheduled validity limit, rather than a prediction that accumulated water will have drained from every affected street by that time.
Sources NWS New Orleans — October 31, 5:57 p.m. CDT Flash Flood Warning: https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.0e6c51bb0b3f4d425acd8646ff96541623d1c288.001.1