Massive rainstorm threatens to soak the South this holiday weekend

It's on track to become the first named storm of the hurricane season.
1:10 | 05/24/18

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Transcript for Massive rainstorm threatens to soak the South this holiday weekend
We do move on now to the next tropical storm threat this holiday weekend. The massive rainmaker that could become the first named storm of the hurricane season. Parts of the south already under water, flash flooding here in Little Rock, Arkansas. And this raging creek, take a look, in western Georgia, after a foot of rain. And tonight, the forecast on how many hurricanes we could expect to see. ABC's senior meteorologist rob Marciano, tracking it all. We're starting strong. Reporter: We are. Not even hurricane season officially. This cluster of thunderstorm, a 90% chance of developing into a tropical cyclone here, clickly over the weekend, as it gets into the gulf of Mexico. Heavy rain expected. Unlikely to be a hurricane. Something hybridy, but definitely a lot of rain, five inches over the weekend. Kind of stalling, maybe more, through midweek, and likely some flooding, Tom. And we mentioned this earlier, they released their forecast for this year of hurricanes and it's going to be a very active season? Reporter: Hopefully not as active as last season, but likely to be more active than usual. Named storms, 10 to 16, hurricanes, anywhere from 5 to 9, noaa says. Major hurricanes, 1 to 4. Can't say how many of those will impact land, but it only M takes one. Rob, thank you. Next to a horrible incident on a boulevard in Tampa.

This transcript has been automatically generated and may not be 100% accurate.

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