All times are local unless otherwise stated.

Hood (United States) | 26 June-2 July 2002 | New Eruptive Activity Cite this Report
Hood High Cascades Volcanic Arc	CVO reported that the strongest earthquake in the Mount Hood area in decades occurred on 29 June at 0736. The widely felt M 4.5 event was located ~4.5 km S of the summit at a depth of 6 km. Hundreds of aftershocks followed, including two greater than M 3. Typically, several earthquake swarms occur each year at Mount Hood. Sources: US Geological Survey Cascades Volcano Observatory (CVO), Associated Press
Karangetang (Indonesia) | 26 June-2 July 2002 | Continuing Eruptive Activity Cite this Report
Karangetang Sangihe Volcanic Arc	During 17-23 June, there was a significant increase in the number of shallow and deep volcanic earthquakes at Karangetang in comparison to the previous week. In addition, low-level plumes rose above the main crater and crater II. A red reflection was visible 25 m above the rim of crater II. Karangetang remained at Alert Level 2 (on a scale of 1-4). Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Karymsky (Russia) | 26 June-2 July 2002 | Continuing Eruptive Activity Cite this Report
Karymsky Eastern Kamchatka Volcanic Arc	During 21-28 June, seismicity was above background levels at Karymsky, with ~10 earthquakes occurring per hour. The character of seismicity suggested that weak ash-and-gas explosions and gas blow-outs had probably occurred. A steam-and-gas plume was visible on AVHRR satellite imagery on 25 June. Thermal anomalies were visible on satellite imagery, but ash was not. Karymsky remained at Concern Color Code Yellow ("volcano is restless"). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Kīlauea (United States) | 26 June-2 July 2002 | Continuing Eruptive Activity Cite this Report
Kīlauea Hawaiian-Emperor Hotspot Volcano Group	During 25-30 June, surface lava flows were visible on Kīlauea's SW flank. Mild deflation, totaling 0.9 microradians, occurred at Puʻu ʻŌʻō on 26 June around 2130. No other significant deformation was recorded during the report period. Seismicity was at normal levels, except for the continued swarm of long-period earthquakes and tremor that has been occurring below Kīlauea's caldera since early June. Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Merapi (Indonesia) | 26 June-2 July 2002 | Continuing Eruptive Activity Cite this Report
Merapi Sunda Volcanic Arc	During 17-23 June, observers noted 65 incandescent lava avalanches flowing predominately down Merapi's SW flank into the upstream portions of the Sat, Lamat, and Senowo rivers. The avalanches reached a maximum run-out distance of ~2.5 km. Seismicity decreased in comparison to the previous week. Merapi remained at Alert Level 2 (on a scale of 1-4). Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Popocatépetl (Mexico) | 26 June-2 July 2002 | Continuing Eruptive Activity Cite this Report
Popocatépetl Trans-Mexican Volcanic Arc	During 26 June-1 July, there were small-to-moderate emissions of steam, gas, and ash at Popocatépetl. In addition, several episodes of low-amplitude harmonic tremor were recorded. The most notable emissions, on 26 June at 1110 and on 1 July at 0238, produced ash clouds to a height of ~2 km above the volcano. Source: Centro Nacional de Prevencion de Desastres (CENAPRED)
Semeru (Indonesia) | 26 June-2 July 2002 | Continuing Eruptive Activity Cite this Report
Semeru Sunda Volcanic Arc	During 17-23 June, seismic and volcanic activity were higher than normal at Semeru. Lava avalanches were observed traveling 750 m E to the Besuk Kembar River. Seismicity included 670 explosion events. Semeru remained at Alert Level 2 (on a scale of 1-4). Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Sheveluch (Russia) | 26 June-2 July 2002 | Continuing Eruptive Activity Cite this Report
Sheveluch Eastern Kamchatka Volcanic Arc	Seismicity declined at Shiveluch during 21-28 June, but remained above background levels. It included earthquakes with magnitudes less than or equal to 1.9 at depths of 0-6 km, many local shallow seismic signals (from possible avalanches or weak gas-and-ash explosions), and episodes of weak intermittent volcanic tremor. Gas-and-steam plumes reached to 3 km above the lava dome and small avalanches were captured on video rolling down the dome on 23 June. Thermal anomalies were visible on AVHRR satellite imagery, but ash was not. The Concern Color Code remained at Yellow ("volcano is restless"). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Soufrière Hills (United Kingdom) | 26 June-2 July 2002 | Continuing Eruptive Activity Cite this Report
Soufrière Hills Lesser Antilles Volcanic Arc	Volcanic and seismic activity were at low levels during 21-28 June at Soufrière Hills. Growth of the extruded lobe on the SE side of the lava dome appeared to have stagnated. The number of rockfalls decreased abruptly on the afternoon of 22 June, remained at low levels for the rest of the week, and declined to very low levels during the last 3 days of the report period. SO2 emission rates also decreased to very low levels by the end of the report period. Sources: Washington Volcanic Ash Advisory Center (VAAC), Montserrat Volcano Observatory (MVO)
Tungurahua (Ecuador) | 26 June-2 July 2002 | Continuing Eruptive Activity Cite this Report
Tungurahua Northern Andean Volcanic Arc	During 26 June-2 July, volcanism at Tungurahua consisted of small emissions of gas, steam, and ash. For several days, frequent explosions emitted rocks and incandescent material that traveled down the volcano's flanks. IG reported that an explosion on 1 July at 1123 produced an ash cloud that rose 1.5 km above the summit and drifted to the W. Sources: Washington Volcanic Ash Advisory Center (VAAC), Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)

Since the Weekly Volcanic Activity Report began in November 2000, there have been 22,859 individual reports over 1,335 weeks (average of 17 per week) on 351 different volcanoes.

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The RSS (Really Simple Syndication) feed is identical to the Weekly Volcanic Activity Report minus some features including the header information (latitude and longitude and summit elevation), the Geological Summary, and a link to the GVP volcano profile page. At the end of each report is a list of the sources used. Each report includes a link from the volcano's name back to the more complete information on the GVP website.

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Criteria

The Weekly Volcanic Activity Report does not necessarily include all volcanic activity that occurred on Earth during the week. More than a dozen volcanoes globally have displayed essentially continuous eruptive activity for decades or longer, and such routine activity is typically not reported here. Submarine activity is reported when information is available. The Weekly Volcanic Activity Report summarizes volcanic activity that meets one or more of the following criteria:

- A volcano observatory raises or lowers the alert level at the volcano.
- A volcanic ash advisory has been released by a volcanic ash advisory center (VAAC) stating that an ash cloud has been produced from the volcano.
- A verifiable news report of new activity or a change in activity at the volcano has been issued.
- Observers have reported a significant change in volcanic activity. Such activity can include, but is not restricted to, pyroclastic flows, lahars, lava flows, dome collapse, or increased unrest.

Reports categorized as "Activity (New)" indicate eruptive activity that has occurred after at least 3 months of quiescence. Once a volcano is included in this section, updates will remain on that list unless the activity continues for more than 1 month without escalating, after which time updates will be listed in the "Activity (Continuing)" section. Reports are included in the "Unrest" sections (New or Continuing) if the volcano is undergoing non-eruptive activity such as seismicity or deformation that is unusually high for that volcano or is increasing. The "Other" category includes non-eruptive and non-unrest reports, such as Alert Level decreases or previous ash deposits resuspended by winds. Reports through 2025 were only divided into "New Activity/Unrest" and "Continuing Activity", which have been automatically converted to the "Activity (New)" and "Activity (Continuing)" groups, respectively, without a review of content that might change the category to "Unrest" or "Other".

It is important to note that volcanic activity meeting one or more of these criteria may occur during the week, but may not be included in the Weekly Volcanic Activity Report because we did not have the relevant information at the time.

Disclaimers

1. The Weekly Volcanic Activity Report is intended to provide timely information about global volcanism on a weekly basis. Consequently, the report is generated rapidly by summarizing volcanic reports from various sources, with little time for fact checking. The accuracy of the Weekly Volcanic Activity Report is dependent upon the quality of the volcanic activity reports we receive. Reports published in the Bulletin of the Global Volcanism Network are cover longer time periods and are more carefully reviewed, although all of the volcanoes discussed in the Weekly Volcanic Activity Report are not necessarily reported in the Bulletin. Reports are updated on the Weekly Volcanic Activity Report web page as they are received, therefore information may be included regarding events that occurred before the current report period.

2. Rapidly developing events lead to coverage that is often fragmentary. Volcanoes, their eruptions, and their plumes and associated atmospheric effects are complex phenomena that may require months to years of data analysis in order to create a comprehensive summary and interpretation of events.

3. Preliminary accounts sometimes contain exaggerations and "false alarms," and accordingly, this report may include some events ultimately found to be erroneous or misleading.

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