Potential Vorticity ("PV") streamer type, or "baroclinic" genesis event if this Gulf storm spins up. This streamer is associated with an upper-level trough that is over the NE today. An indication that summer is coming to an end, as PV streamers are most common in Spring & Fall. https://t.co/iaWrK5sF0P pic.twitter.com/OianxS19zU

— Mike Ventrice (@MJVentrice) September 3, 2021