Heavy rain will drench a good part of the weekend in South Mississippi, with 2 to 4 inches of rain expected to fall and isolated areas getting 6 inches or more, said Rupert Lacy, emergency management director for Harrison County.
A flash flood watch is in effect from Friday at 4 p.m. through Sunday at 7 a.m.
Lacy said that locally heavy rainfall likely will lead to ponding of water in low-lying areas and locations with poor drainage. Flash flooding also will be possible.
Rivers are expected to rise and flood warnings may be issued, he said.
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The National Weather Service in Slidell in its Hazardous Weather Outlook said numerous showers and thunderstorms are expected overnight Friday into Saturday. The chance of storms continues Saturday into Sunday, with the possibility of small hail, strong gusty winds and heavy downpours.
The slow-moving disturbance over Texas will draw Gulf of Mexico moisture over the area, the weather service report said, and that the flash flood watch may be extended in the eastern part of the area beyond Sunday at 7 a.m.
The chance of precipitation in Biloxi is 70 percent Saturday and 60 percent on Sunday. High temperatures will be in the mid 80s.