Severe Thunderstorms With Strong Winds, Hail Possible Across The Southeast; Heavy Rainfall Is Concern In Parts of East, Appalachians
Published: April 22, 2017
Severe thunderstorms will push east into the South as another severe weather event comes to a close by Sunday. Heavy rainfall may also bring localized flooding to parts of the South into the Ohio Valley and Appalachians.
(MORE: Tornado Central)
One tornado was observed Saturday afternoon near Burton and Belmont in northeastern Mississippi, and this radar and public confirmed tornado continued into Franklin County, Alabama during the mid-afternoon Saturday. Debris fell out of the sky in Franklin County, Alabama, and damage was reported at the Shiloh Baptist Church.
Localized flooding was reported south of Nashville including in Nolensville, Brentwood and Franklin, as locally heavy rain moved through the area Saturday morning. By Saturday afternoon, flash flooding was also occurring in Wilson and Williamson counties, Tennessee and at least one water rescue was necessary. Numerous roads in Williamson County were flooded as of mid-afternoon.
Just west of Knoxville, Tennessee, near Oakdale, portions of state highway 328 were shutdown Saturday evening due to flooding and a rockslide occurred on highway 62.
Heavy rainfall caused minor flooding in eastern Tennessee including in Knoxville, and severe people reported golf ball sized hail.
Locally heavy rainfall has caused flash flooding in southeastern Kentucky. Small waterways are flooding in and around southern Harlan County, Kentucky.
(MORE: View National Interactive Radar Map | Difference Between a Watch and a Warning)
Current Radar, Watches and Warnings
A cold front will pivot across the Southeast with an area of low pressure on Sunday.
This system combined with increasing Gulf of Mexico and Atlantic moisture and moderately strong mid-level winds creating wind shear, the change in wind speed and/or direction with height, provides all the ingredients necessary for severe thunderstorms.
Below is our latest forecast thinking on the timing and magnitude of the severe threats through this weekend.
Severe Weather Forecast
- Forecast: The risk of a few severe thunderstorms will slide east into parts of the Southeast, mainly from southern North Carolina southward into Georgia.
- Threats: Damaging wind gusts and large hail will be the primary concerns, although an isolated tornado is also possible. Locally heavy rain is also likely in the Appalachians and adjacent piedmont, with a threat of flash flooding.
- Cities: Wilmington, North Carolina | Charleston, South Carolina | Savannah, Georgia
Sunday's Thunderstorm Forecast
(MAPS: 7-Day U.S. Rain Forecasts)
Heavy Rainfall Expected
As mentioned above, flash flooding is also a concern with this round of severe storms. Flash flood watches have been issued from central and eastern Tennessee into southeastern Kentucky, southern Virginia and most of North Carolina where multiple rounds of locally heavy rain could create flooding this weekend.
This rainfall will come in multiple waves through the weekend.
An expansive swath of at least 2 inches of rain is expected in the central Appalachians and adjacent piedmont through Sunday.
Parts of the southern Appalachians will see up to 5 inches of rain, with locally higher amounts likely through early next week, leading to a dangerous threat of flash flooding.
Keep this is in mind if you're traveling this weekend. Never drive through flood waters of unknown depth, as roughly two-thirds of flash flood fatalities occur in vehicles.
Check weather.com for updates in the days ahead.
Storm Reports So Far
On Friday night, hail as large as baseball sized was reported along the Red River, or the border of North Texas and southern Oklahoma, in Gainesville, Texas. A tornado was also sighted with that severe thunderstorm near Valley View.
Hen egg sized hail was reported near Tioga, Texas on Friday evening.
Clusters of thunderstorms producing hail and heavy rain flared up after midnight Friday morning to the west of Oklahoma City and north of Amarillo. Quarter-size hail was reported in Weatherford, Oklahoma.
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MORE: Severe Weather Outbreak in the South, April 4-5, 2017
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