Here is a pdf of screenshots from the today. See page 14 for the start of a major emission event stemming from unit 1 https://www.dropbox.com/s/06pq5hunk8cjlec/JULY%2014%20STEAM%20EVENT.docx
The two screenshots below marked the BEGINNING of the unit 1 steam event, which only lasted from 2:56 AM to 3:08:

The two screenshots below marked the BEGINNING of the unit 1 steam event, which only lasted from 2:56 AM to 3:08: