Remember the GFS tendency to show convective bursts that generate vorticity? Like I said, they are often real! Here's the one forecasted a week ago, happening in real-time north of Panama.

The GFS bias is that it makes them too strong and persistent. That's why the original GFS… https://t.co/sEqpMLfHLp pic.twitter.com/Zz5zXqifna

— Dr. Levi Cowan (@TropicalTidbits) June 17, 2023