05-01-2018, 02:12 AM
Issued: Tuesday, May 1, 2018, 4:54 AM HST
Source: Hawaiian Volcano Observatory
Notice Number:
Location: N 19 deg 25 min W 155 deg 17 min
Elevation: 4091 ft (1247 m)
Area: Hawaii
Volcanic Activity Summary: Summary:
A collapse of the Pu#699;u #699;#332;#699;#333; crater floor Monday afternoon on K#299;lauea Volcano's East Rift Zone has prompted increases in seismicity and deformation along a large section of the rift zone, with seismicity currently occurring as far east as Hwy 130. A outbreak of lava in a new location is one possible outcome. At this time it is not possible to say with certainty if or where such an outbreak may occur, but the area downrift (east) of Pu#699;u #699;#332;#699;#333; is the most likely location, as this is where seismicity and deformation have been concentrated overnight.
Residents of lower Puna should remain alert and watch for further information about the status of the volcano; watch for Hawaii County Civil Defense messages at http://www.hawaiicounty.gov/active-alerts
Recent Observations:
Between about 2:00 and 4:30 pm on Monday, April 30, following weeks of uplift and increasing lava levels within the cone, the crater floor at Pu'u '#332;'#333; on K#299;lauea Volcano's East Rift Zone collapsed.
Poor weather prevented HVO from flying over the activity or seeing details of the activity in our web cameras on site.
Following the collapse, HVO seismometers and tiltmeters recorded an increase in seismic activity and deformation from K#299;lauea Volcano's summit to an area about 6-10 miles downrift (east) of Pu#699;u #699;#332;#699;#333;. Overnight, this activity localized downrift of Pu#699;u #699;#332;#699;#333; and continued to propagate eastward along the rift zone.
The largest earthquake of this sequence so far was a magnitude 4.0 earthquake just offshore south of Pu'u '#332;'#333; at 02:39 this morning,
K#299;lauea's summit eruption has thus far not been affected by the change at Pu'u '#332;'#333;.
Hazard Analysis:
The migration of seismicity and deformation downrift (east) of Pu#699;u #699;#332;#699;#333; cone following Monday's collapse indicates that a large area along the East Rift Zone is potentially at risk for a new outbreak.
The location of any future outbreak will determine what areas are in the path of new lava flows.
The situation is rapidly evolving and USGS Hawaiian Volcano Observatory scientists continue to closely monitor K#299;lauea's East Rift Zone and summit. More updates will follow as information becomes available.
Source: Hawaiian Volcano Observatory
Notice Number:
Location: N 19 deg 25 min W 155 deg 17 min
Elevation: 4091 ft (1247 m)
Area: Hawaii
Volcanic Activity Summary: Summary:
A collapse of the Pu#699;u #699;#332;#699;#333; crater floor Monday afternoon on K#299;lauea Volcano's East Rift Zone has prompted increases in seismicity and deformation along a large section of the rift zone, with seismicity currently occurring as far east as Hwy 130. A outbreak of lava in a new location is one possible outcome. At this time it is not possible to say with certainty if or where such an outbreak may occur, but the area downrift (east) of Pu#699;u #699;#332;#699;#333; is the most likely location, as this is where seismicity and deformation have been concentrated overnight.
Residents of lower Puna should remain alert and watch for further information about the status of the volcano; watch for Hawaii County Civil Defense messages at http://www.hawaiicounty.gov/active-alerts
Recent Observations:
Between about 2:00 and 4:30 pm on Monday, April 30, following weeks of uplift and increasing lava levels within the cone, the crater floor at Pu'u '#332;'#333; on K#299;lauea Volcano's East Rift Zone collapsed.
Poor weather prevented HVO from flying over the activity or seeing details of the activity in our web cameras on site.
Following the collapse, HVO seismometers and tiltmeters recorded an increase in seismic activity and deformation from K#299;lauea Volcano's summit to an area about 6-10 miles downrift (east) of Pu#699;u #699;#332;#699;#333;. Overnight, this activity localized downrift of Pu#699;u #699;#332;#699;#333; and continued to propagate eastward along the rift zone.
The largest earthquake of this sequence so far was a magnitude 4.0 earthquake just offshore south of Pu'u '#332;'#333; at 02:39 this morning,
K#299;lauea's summit eruption has thus far not been affected by the change at Pu'u '#332;'#333;.
Hazard Analysis:
The migration of seismicity and deformation downrift (east) of Pu#699;u #699;#332;#699;#333; cone following Monday's collapse indicates that a large area along the East Rift Zone is potentially at risk for a new outbreak.
The location of any future outbreak will determine what areas are in the path of new lava flows.
The situation is rapidly evolving and USGS Hawaiian Volcano Observatory scientists continue to closely monitor K#299;lauea's East Rift Zone and summit. More updates will follow as information becomes available.