Locally Heavy Rain Spreads Through South and East Ahead of Winter Storm Delphi

November 30,2015

No severe thunderstorms are forecast as we head into December, as instability is expected to be too weak for thunderstorm activity.
The combination of subtropical moisture and a slow moving low pressure system will set the stage for locally heavy rain, which will move through the South and East through Wednesday, potentially creating some travel impacts. This rain is ahead of Winter Storm Delphi, which is dumping snow on the Midwest to start this week.
(MORE: Winter Storm Delphi Forecast)

Flood Alerts

Some localized flooding is possible in the southern Appalachians, and the National Weather Service has posted flood watches for parts of eastern Tennessee, southwest Virginia, western North Carolina, far northwestern South Carolina, northern Georgia and northeastern Alabama through Wednesday.
The soaked southern Plains will see much drier conditions this upcoming week after the flooding that was observed over Thanksgiving weekend.

Thunderstorm Forecast

Tuesday - Wednesday

• No organized severe thunderstorm activity is expected as a relatively stable environment is forecast across the country.
• Rain will spread from the South into parts of the Midwest and Northeast through Wednesday night. The rain may be locally heavy at times which may cause some localized flash flooding, as well as river flooding.
• A swath stretching from the Tennessee Valley to the southern Appalachians and mid-Atlantic has the potential for 1 to 3 additional inches of rainfall through Wednesday, with locally higher amounts possible.
• An isolated thunderstorm may develop from the Mid-Atlantic to northern Florida on Wednesday, as a cold front approaches. Severe thunderstorms, however, remain unlikely.

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Rainfall Forecast

Thursday - Sunday

• A few thunderstorms may develop ahead of a cold front in central and southern Florida on Thursday and into early Friday, but severe thunderstorms are not expected.
• Thunderstorms are not likely this weekend. A few showers are possible in portions of the central and southern Plains Saturday night and Sunday. 
• Otherwise, rain is expected along the Pacific Northwest coast through the weekend.

For specific tornado threat forecasts, check out the latest TOR:CON forecasts from severe weather expert, Dr. Greg Forbes.

Current Radar with Watches and Warnings

The radar map(s) above focus on the most likely areas for severe weather and/or flash flooding, if any. Maps update every five minutes; refresh this page for the latest image.
For radar and watch/warning information in other areas of the country, click on the links below.
(MORE: View National Interactive Radar Map | Difference Between a Watch and a Warning)

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