Linked volcano names (below) go to the report for this month within all of the Smithsonian reports for that volcano. Select "Complete Issue" to see all the reports for this month.
Anatahan (Mariana Islands)
Nearly continuous ash plumes through May
Chikurachki (Kurile Islands, Russia)
Eruption continued through May; long plumes and some ashfall
Karymsky (Kamchatka Peninsula, Russia)
Frequent ash plumes generated from October 2002 through May 2003
Har-Togoo (Mongolia)
Fumaroles and minor seismicity since October 2002
Mayon (Luzon, Philippines)
Three small ash-and-steam explosions during April-May 2003
Karangetang (Sangihe Islands, Indonesia)
Ash explosions from January through May 2003
Lokon-Empung (Sulawesi, Indonesia)
Increased explosive activity during January-April 2003; local ashfall
Ruapehu (North Island, New Zealand)
Steam plume issued from warm Crater Lake in May, but no eruption
Monowai Seamount (Kermadec Islands)
Volcanic earthquake swarm April-May detected by T-waves
Piton de la Fournaise (Reunion Island)
Eruption on 30 May generates lava flows within Dolomieu crater
Stromboli (Italy)
Lava effusion continues through mid-June; infrared satellite observations
Nyiragongo (DR Congo)
2002-2003 lava lake activity, thermal radiation, and CO2 and SO2 emissions
Robledo (Argentina)
Satellite surveys during May 1996-October 2000 indicate subsidence
Uturuncu (Bolivia)
Deformation detected by satellite surveys; low-level seismicity and active fumaroles
Sabancaya (southern Perú)
Inflation at Hualca Hualca detected by satellite surveys from June 1992 to April 1996
Santa Maria (Guatemala)
Lahars during January-October 2002; explosions and pyroclastic flows
Kilauea (Hawaii, USA)
Continued lava flows during December 2002-June 2003 enter the ocean
Editors: Edward Venzke, Jennifer Fela, Gari Mayberry, and Rick Wunderman
Volunteer Staff: Jacquelyn Gluck, David Charvonia, Robert Andrews, Jessica Ball, and Ashley McCleaf