Spectacular lava fountains and lava flows from the south vent (image: @disaster_db/x.com)
The north and south vents ceased erupting around the same time. The fountaining phase of episode 18 began at 03:20 AM yesterday and continued for 10 hours and 8 minutes. The lava erupted from both vents, with the south vent producing fountains that exceeded 600 feet (200 meters) in height, while the north vent’s fountains remained under 200 feet (60 meters).
Source: Hawaiian Volcano Observatory volcano activity update 23 April 2025