To give you an idea of what's going on. This is Pu'u O'o crater April 28th full to the brim with lava & then yesterday completely drained like someone unplugged the tub. All the lava has flowed into lava tubes to were it's reaching the surface miles away in Leilani. pic.twitter.com/BzJwNC0Fvh
— Reel News Hawaii (@reelnewshawaii) May 6, 2018
Foggy/rainy weather had limited visibility, but the skies cleared May 3. A USGS overflight revealed the crater was completely drained:
At 10:30 AM, a magnitude-5 earthquake caused more of the crater to collapse, throwing up a cloud of pink ash.
See also Mick Kalber’s May 2 flyover video.
Meanwhile, increased seismicity at the summit coincided with the summit lava lake changing from inflation to deflation— this is when it began to drop (source: HVO Volcano Watch).
On May 1st, the night after Pu’u O’o’s floor fell in, the newly-drained crater was sending up a huge plume of pink ash.*
MORE VIDEO, LINKS, INFO ON PLUME:
The floor of Pu’u O’o collapsed in stages starting at 2PM in the afternoon and evening of April 30. Poor weather, fog and clouds obscured the view, but the thermal webcam positioned on Pu’u O’o’s north rim captured it. Timelapse April 28-May 1:
This isn’t the first time it’s collapsed. Here’s a regular webcam timelapse movie of Pu’u O’o’s crater floor collapsing on March 5, 2011.
So there’s a chance the lava may return.
Amateur video of Halema’uma’u lava lake in Overlook Crater, taken by Jeffrey Brown on April 30, 2018.
The week before, the summit had been inflating and the lava lake had been overflowing, as seen on this USGS timelapse video of Halema’uma’u Crater April 25-26.
Map of Halema’uma’u and Kilauea Summit, because it’s a little confusing: