NEW ORLEANS – Starting this evening through Tuesday morning will be a WDSU First Warning Impact Day due to the threat of severe weather and flooding. The first half of Monday stays dry with partly to mostly cloudy skies. Highs will rise to the low 80s. A few isolated showers and thunderstorms will arrive late Monday afternoon. Expect these isolated showers and thunderstorms to continue for the Monday evening commute. Strong storms and heavy rain will arrive Monday night.