USGS
Hawaiian Volcano Observatory

1984 Eruption of Mauna Loa Volcano
March 25 - April 15


March 25 Glow reflected on cloud of steam and gas from eruption at summit of Mauna Loa Early morning view of glow reflected by eruption cloud above summit of Mauna Loa Volcano from the Hawaiian Volcano Observatory
March 25 Plume of steam and gas rises from fissures erupting on the northeast rift zone of Mauna Loa Late morning view of eruption cloud (steam and volcanic gas) above the northeast rift zone of Mauna Loa Volcano from Hawaiian Volcano Observatory
March 25 Lava fountains erupt from fissures on upper northeast rift zone, Mauna Loa Volcano Lava fountains erupting from fissure on upper northeast rift zone of Mauna Loa Volcano
March 25 A`a lava flow, Mauna Loa Volcano `A`a lava flow moves down southeast slope of Mauna Loa from fissure on the northeast rift zone
March 25 Lava fissure and flows from northeast rift zone of Mauna Loa, Hawai`i; 1984 Erupting fissure at about the 3,400-m level on the northeast rift zone
March 26 Lava fountains on March 26, 1984 Vents at 2,900-m level supply lava for remainder of eruption
March 28 Channelized `a`a lava flow, Mauna Loa Volcano Channelized `a`a lava flow below 2,900-m vents on northeast rift zone
March 31 Dark explosion cloud rises from a methane explosion, Mauna Loa Volcano Methane explosion in front of advancing `a`a lava flow
April 6 Advancing front of an `a`a lava flow `A`a lava flow moves through trees and grass
April 7 Overflow from lava channel caused by blockage Lava spills from levee collapse of main channel
April 8 Aerial view of 2,900-m vents, Mauna Loa Volcano Lava supply slows from 2,900-m vents
April 13 Aerial view of 2,900-m vents, Mauna Loa Volcano Fewer vents erupt lava; eruption ends April 15

Narrative of the 1984 eruption

Mauna Loa Volcano Current Activity


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The URL of this page is: http://hvo.wr.usgs.gov/photogallery/maunaloa/1984
Contact: hvowebmaster@usgs.gov
Updated: 6 July 1998