#CISWS24 is the first in-person symposium since 2018 and attendance is good. I overheard that there were about 250 registrations.

First talk is NWS Indianapolis Warning Coordination Meteorologist Sam Lashley on the 50th anniversary of the April 3, 1974 Super Outbreak. #CISWS24

The NWS used teletypes until the late 80s - Lashley
Many text products still carry vestiges of that era today. - Me
#CISWS24

Fujita originally called the outbreak the "Jumbo Outbreak" because of the year (74) and third day of the fourth month (3+4=7), which reminded him of the Boeing 747. #CISWS24

Fujita originally rated the Xenia, OH tornado EF6 based on aerial survey. He adjusted it down to EF5 after an on-the-ground survey. #CISWS24

I'm always uneasy comparing tornado counts across shifts in radar technology. We're probably much better at finding the low-end (EF0-1) tornados now because we get hints on radar of where to look for them. I wonder if it's better to compare outbreaks solely on EF2+. #CISWS24

The same day of the Super Outbreak, there was also a 4.5 earthquake centered new Mattoon, Illinois. #CISWS24

Lashley says there's an emergency manager in an unspecified Ohio County that sends a drone up after almost every strong thunderstorm and finds small circulations that wouldn't have been found otherwise. #CISWS24

Up next: Greg Melo from NWS Indianapolis reviews the March 31, 2023 tornado outbreak. #CISWS24

When upper-level jet streaks are orthogonal to the warm sector, there's a higher chance for tornado outbreaks. 96% of violent outbreaks show this alignment. This has been nicknamed the "violent outbreak cross" (VOC) #CISWS24

Now some student lightning talks! #CISWS24

Ball State student Tyler Miller on the electrical properties of thunderstorms: "a lightning talk about lightning."
#CISWS24

The last student presentation is from Lainy Brown et al about what got them interested in becoming meteorology students at Ball State. #CISWS24

Back from lunch. Now NWS Indianapolis meteorologist Matthew Eckhoff talking about mesoscale convective systems. #CISWS24

When there's not a lot of stratiform precipitation behind an MCS, that's an indication that it's more shear-dominant, which can lead to severe winds. #CISWS24

Surface stability isn't always an impediment to MCSs. #CISWS24

Sam Lashley returns to the stage for the penultimate #CISWS24 session to talk about the NWS damage survey process.

If anyone has a contact for the "60 Minutes" producers, Sam Lashley would like to be on the show. #CISWS24

Only two tornado fatalities from EF0 and EF1 tornadoes in Indiana since 1980. 85% of Indiana tornadoes are EF0-1. #CISWS24

And now for the final talk of #CISWS24: Randy Bowers from NWS Indianapolis on the future of forecasting.

Part of the future of forecasting is getting better at what we already know. Mesoanalysis is an important and underdeveloped skill for severe weather forecasting. #CISWS24