Southwest 278 was given a report of braking action good 10 minutes earlier from another 737, they were shooting the ILS 8. You have to pop the autopilot off at least 300 feet above the touchdown zone according to the approach plate. The tower reported an area of heavy precipitation right over the airport. Southwest replied 'perfect, thanks'. Final wind given was 270/10. The accident occurred around 1702Z from the liveatc.com tapes.
http://archive-server.liveatc.net/kb...2018-1630Z.mp3
http://archive-server.liveatc.net/kb...2018-1700Z.mp3
From overhead pictures of the mishap and the BUR taxi chart, it appears that the EMAS pad is offset from the end of the runway with more crunchy concrete area to the left of the extended runway 8 centerline.