With a moderate risk for severe thunderstorms across the southeast US on 19 March 2018, 30-sec GOES-16 imagery was made available over the region. SPC High or Moderate risk for severe is the number 1 priority for mesoscale sector requests.

Figure 1: 19 March 2018 GOES-16 30-sec visible imagery over northern Alabama. Full res

A tornado was confirmed with storms a little later in the evening. 30-sec IR imagery captured persistent overshooting tops and rapid anvil expansion with these storms indicating strong updrafts.

Figure 2: 19 March 2018 GOES-16 30-sec IR imagery. Full res

• Bill Line, NWS