14) { $gdate = $gdate2; } if($ghr < 3) { $gdate = "$yester"."12"; } echo "\"Latest"; echo "\"Latest"; echo "\"Latest"; echo "\"Latest"; echo "\"Latest"; echo "\"Latest"; } ?> Global Sulfur Dioxide Monitoring Home Page "; echo ""; } ?>
NASA Logo, National Aeronautics and Space Administration

Atmospheric Chemistry and Dynamics Laboratory (Code 614)

Global Sulfur Dioxide Monitoring Home Page


Each week, Smithsonian's Global Volcanism Program publishes a report of new volcanic activity.

The SO2 data collected by AURA/OMI and Suomi NPP/OMPS for the new activity this week are shown below.


Week of 06 - 12 May 2026


Afar - Hayli Gubbi: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Alaska - Pavlof: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Aleutian Islands - Atka & Pavlof: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Colombia - Purace & Reventador: OMI   NPP-OMPS   TROPOMI   N20-OMPS
DRCongo - Nyamulagira & Nyiragongo: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Halmahera - Dukono: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Hawaii - Kilauea: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Italy - Etna: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Java - Ruang & Semeru: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Kamchatka - Klyuchevsky, Krasheninnikov, Mutnovsky & Sheveluch: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Mexico - El Chichon & Popocatepetl: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Papau New Guinea - Bagana, Langila & Manam: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Philippines - Kanlaon, Mayon & Taal: OMI   NPP-OMPS   TROPOMI   N20-OMPS
Vanuatu - Ambae & Yasur: OMI   NPP-OMPS   TROPOMI   N20-OMPS

Summary of Preliminary Tonnage estimates