1976: When water began leaking from Idaho’s new Teton Dam, there seemed to be no cause for alarm. On this date, warnings were frantic that the dam was about to break. As workers tried to shore up the crumbling dam, it crumbled shortly after 11 AM, sending 180 billion gallons of water pouring through Teton Canyon. 11 people lost their lives, but the toll would have been much higher if the dam had failed at night and residents had been asleep.
2015: Phoenix, Arizona measured just 0.16 inches of precipitation on this day. Yet this was the most rainfall they received on June 5th, since 1934.