Harrison and Hancock counties were inundated with 6 to 12 inches of rain Thursday, which quickly flooded streets and raised river levels above their flood stages.
Luckily, the chance of rain is very low Friday and Saturday, but heavy rain is expected again Sunday.
The National Weather Service on Wednesday had predicted only a 50 percent chance of rain Thursday for the coastal counties. But meteorologist Robert Ricks said the chances of precipitation can be misleading, as Jackson County and the upper counties saw little rain.
The slow-moving front dumped rain over the same areas early in the day, which is possible with any storm. The weather service typically warns that a certain inch count is likely, but that locally higher amounts of rain are possible.
Ricks said the Coast is vulnerable to strong storms this time of year.
"This pattern is not that uncommon," he said. "When you get slow-moving fronts in late spring they can bring heavy rainfall."
The Coast is likely to get a break from the rain over the next two days, though, as a high-pressure area pushes out the moisture-rich low.
Friday is predicted to by mostly cloudy with a 10 percent chance of rain. Chances increase to 20 percent Saturday, then 40 percent Saturday night.
Sunday should see widespread showers and thunderstorms, with a 70 percent chance of rain.
Temperatures are expected to warm a bit, with daily highs in the upper 80s and lows in the upper 60s.