Kīlauea Eruption Status A prolonged deflation/inflation (DI) event started at Kīlauea's summit on March 5. The deflation caused surface flows on Pulama pali and on the coastal plain to slow down, perhaps stop, during the past week, but not before the flows had reached a few tens of meters (yards) into the National Park. As of this writing (March 11), the volcano had rapidly begun to inflate, and surface activity on the pali and coastal plain will likely increase or resume soon.
At Kīlauea's summit, a spattering and roiling lava surface deep within the collapse pit inset within the floor of Halema`uma`u Crater, was barely visible, at times, via Webcam during the past week. The lava surface dropped significantly in response to the deflation phase of the DI event, but has begun to rise slowly back to a higher level since the volcano switched to inflation. Volcanic gas emissions remain elevated, resulting in high concentrations of sulfur dioxide downwind.
Three earthquakes beneath Hawai`i Island were reported felt during the past week—all on Monday, March 8, 2010, at the same location, 32 km (20 miles) northwest of Hilo, and at the same depth, about 32 km (20 miles). A magnitude-4.5 earthquake occurred at 6:29 p.m., H.s.t, a magnitude-3.5 occurred at 6:31 p.m., and a magnitude-1.8 occurred at 6:38 p.m.