Around 10:40 PM Central time a tornado hit the community of Fultondale, AL located just to the north of Birmingham. https://twitter.com/WeatherNation/status/1353944489426100224 The aftermath of the tornado shows significant damage to many areas in Fultondale. Here is the latest drone footage of the damage from the tornado. https://twitter.com/WeatherNation/status/1354112111899598853 https://twitter.com/NWS/status/1354109749395148802 The National Weather Service Office in Birmingham, Alabama, has storm surveys  underway, with preliminary reports of EF-3 tornado damage.  They will have final updates after all surveys are complete.

A Look Back

https://twitter.com/i/status/1354157160733810688 This is the Doppler radar velocity data taken at the time that the tornado moved through Fultondale. There is clearly a tornado showing on the velocity imagery right in this areas. Velocity shows the inbound and outbound winds in relation to the radar.  This is a great tool for tracking a tornado. Just minutes after this imagery, a particular signature showed up on dual-polarization Doppler radar that showed debris that was being flung through the air.  This was the confirmation that a tornado was occurring. The correlation coefficient is a great tool for showing debris getting blow around by a tornado. There is another risk of severe weather for the Southeast again today. Here is a look at what areas could see severe storms---> SEVERE