The Weekly Volcanic Activity Report: April 9–15, 2025
New activity/unrest was reported for 3 volcanoes from April 9 to 15, 2025. During the same period, ongoing activity was reported for 20 volcanoes.
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Critical to Extremely Critical Fire Weather expected in much of New Mexico and parts of Texas, Colorado, and eastern Arizona
Unseasonably warm, dry, and windy conditions spread across much of New Mexico and parts of Texas, Colorado, and Arizona on April 16, 2025, prompting Critical to Extremely Critical Fire Weather Outlooks from the Storm Prediction Center (SPC). Fire danger is expected to remain elevated through the weekend.
CME impacts Earth sparking widespread aurora, G3 – Strong storm Watch in effect for April 16
A coronal mass ejection produced by a filament eruption on April 13 impacted Earth’s magnetic field at 16:37 UTC on April 15, sparking a G2 – Moderate geomagnetic storm. A G3 – Strong geomagnetic storm watch is in effect for April 16 due to the anticipated arrival of additional CMEs.
Shallow M6.6 earthquake hits Southeast Indian Ridge
A shallow earthquake registered by the USGS as M6.6 hit the southeast Indian Ridge at 01:42 UTC on April 16, 2025. The agency is reporting a depth of 10 km (6.2 miles).
Shallow M5.2 earthquake near San Diego triggers numerous aftershocks, Southern California
A shallow earthquake registered by the USGS as M5.2 struck near Julian, San Diego County, at 17:08 UTC (10:08 local time) on April 14, 2025, shaking large areas of Southern California. The agency reports a depth of 14.3 km (9 miles).
Large Saharan dust plume impacts southern and eastern Europe
A large plume of Saharan dust is moving across the Mediterranean Sea into southern and central Europe, with peak concentrations expected on April 16. The event is likely to reduce air quality and may cause “blood rain” in areas affected by rainfall.
G2 geomagnetic storm watch in effect for April 16 following solar filament eruption
A G2 – Moderate geomagnetic storm watch is in effect for April 16, 2025, due to an Earth-directed coronal mass ejection from an April 13 filament eruption. Solar activity is forecast to remain moderate through April 15, with potential X-class flares from Region 4055, before decreasing to low levels on April 16.
Deep M6.5 earthquake hits south of Fiji Islands
A deep earthquake registered by the USGS as M6.5 hit south of Fiji Islands at 20:03 UTC on April 13, 2025. The agency is reporting a depth of 270 km (168 miles). EMSC is reporting M6.5 at a depth of 262 km (163 miles).
The Weekly Volcanic Activity Report: April 2–8, 2025
New activity/unrest was reported for 4 volcanoes from April 2 to 8, 2025. During the same period, ongoing activity was reported for 23 volcanoes.
Bright fireball observed over New Zealand’s North Island
A very bright fireball lasting 8 seconds crossed the sky over New Zealand’s central North Island on April 10, 2025.
