In preparation for our upcoming meeting, I would like to bring a recent event review to your attention. Back on 3 May, a brief tornado touched down in Abbeville County, South Carolina. The pre-storm environment was characterized by high shear and low CAPE. Upon further review of the radar data, the familiar “broken-S” signature was seen in the reflectivity data about 10-15 minutes before tornadogenesis. What made this case unusual was the relatively short length of the QLCS and the time of year. That it occurred in May, which is normally thought of as a ‘warm season’ month, is proof that “broken-S” tornadoes are not cool season events, they are HSLC events. It just so happens that the majority of high shear, low CAPE environments are observed in the cooler months.
Please take a look at:
for more information.