The storm that triggered the warning was moving to the eastern part of the subway and weakened. A strong thunderstorm warning was in effect until 12 noon for parts of central DeCalb counties and southwestern Gwyneth, including Lawrenceville, Lilburn and Stone Mountain.
The tornado clock is generally in effect until 16:00 ET for parts of Georgia and Alabama, including Atlanta, Macon and Montgomery, as additional thunderstorms could produce several tornadoes in this surveillance area in the afternoon. Hail up to 1
In addition, a new system is developing over the plains, which will cause a separate outbreak of severe weather at night.
Tornadoes most likely in the southern plains and the Ohio River Valley
Rainfall and storms on Monday morning will come out of the Ohio River Valley until noon, while the southern plains remain dry for most of the day.
Storms can also become severe in the Dallas and Chicago areas, but the best chance will be between the two cities.
Normal storms are possible at night, so some places may be affected by more than one storm – perhaps more than one strong storm.
These storms may not reach the western Ohio Valley until early Tuesday morning, possibly affecting cities including Nashville, Indianapolis, St. Louis and Louisville.
Strong storms are also possible in the Southeast
Marginal, level 1 of 5, the chances of severe storms extend from the deep South across the Mid-Atlantic. Cities, including Washington, Richmond and Charlotte, are included in this risk zone.
Unlike the central United States, the threat in the southeast will be mostly during the day.
On Monday morning, thunderstorms are already tracking the interior of the Southeast. There will probably be a break from this rain, at least for a few hours at noon, before another round develops.
This round will have to watch for strong storms this afternoon and evening. Tornadoes, hail and harmful winds are expected in some of these storms.
Local flooding will be possible with each of today’s storms, with some locations measuring 1 to 3 inches of rain.
Many states in the southeast have doubled their normal rainfall in the last month, so even 1 to 2 inches of extra rain can lead to flooding.
The storms head east on Tuesday
This puts a state like Mississippi at risk of tornadoes again, but a tornado may be possible especially in parts of Louisiana, Alabama and Tennessee where there is a level 3 out of 5 severe weather risk.
“Heavy hail, harmful gusts of wind and several tornadoes are likely, along with rainfall levels above an inch per hour,” said the National Weather Service in Jackson, Mississippi.
Several showers and storms may be possible during the day, especially in the Tennessee River Valley, but the main event will be Tuesday night through Tuesday night in the Gulf states.
A rain line is expected to form, leading to widespread storms. This line is expected to reach the Great Lakes north, but storms are likely to be more scattered.
A flood will be possible in the south, thanks to the combination of heavy rainfall and all the rains that have fallen in recent days and weeks. Widespread rain of 1-3 inches is forecast in this region until Tuesday night.
By Wednesday, this line of storms should weaken by Wednesday morning, when it approaches the East Coast of the United States, but severe weather will remain possible in isolation.