What appears to be “smoke” from Catania or Taormina may be an ordinary weather cloud, condensed steam, volcanic gas or ash. Colour alone only supports a hypothesis: it cannot establish whether an eruption is under way or whether a trail is open. To give a proper answer, consider the wind direction, the duration of the emission and INGV bulletins.
Four things you may see above Etna
| Possible appearance | What it may be | What it means |
|---|---|---|
| Rapidly changing white cloud | Condensation, steam or a weather cloud | Does not automatically indicate an eruption |
| Persistent plume from the craters | Volcanic degassing, often rich in steam | Common on an active volcano; its intensity must be assessed with instruments |
| Grey or brown column | Volcanic ash mixed with gas | May affect downwind towns and air traffic |
| Glow or fountains visible at night | Strombolian activity or a lava fountain | An eruptive phenomenon to observe only from authorised areas |
Why a volcano emits gas even without a major eruption
Magma contains volatile components, chiefly water vapour, carbon dioxide and sulfur dioxide. When pressure and temperature change, these components separate from the magma and rise through craters and fissures. Degassing is therefore a normal part of Etna’s activity and can continue even when no lava flows are visible.
When the air is cold or humid, water vapour condenses and the plume appears whiter and more voluminous. In dry air, it may seem almost absent. A photograph cannot measure gas composition: that is why scientists use instrument networks, thermal cameras, seismometers and geochemical measurements.
When the plume contains ash
Ash is not smoke: it consists of extremely fine fragments of rock, minerals and volcanic glass. It can be generated by explosions at the craters and carried for kilometres by the wind. A dark cloud does not necessarily mean a major eruption, but it can reduce visibility, dirty roads and terraces, irritate eyes and airways, and affect operations at Catania Airport.
Wind direction matters more than apparent distance. A nearby town may not receive ash, while a more distant area downwind is affected. For flights, check the airline and airport; for an excursion, you need official bulletins and confirmation from the operator.
Can a webcam tell you whether Etna is safe?
No. Webcams are very useful for seeing clouds, snow, light and the general direction of the plume, but their field of view is limited and they may show delayed images. Always check the timestamp: some Etna Observatory images are marked in UTC, so Italian local time may differ.
A clear image does not certify air quality, road status or crater access. Likewise, a visible plume does not mean that the entire volcano is closed. Etna is large: summit activity may bring restrictions only in specific areas or at particular altitudes.
Where to check activity before setting out
- Open the latest bulletin from INGV – Etna Observatory and check its date and time.
- Check Civil Protection notices and any municipal orders for the relevant area.
- Use webcams as supplementary visual information, not as permission to proceed.
- Contact the guide or operator to confirm the route, altitude and contingency plan.
- If you are flying, check flight status and airport updates directly.
Watch out for social-media images
A video may be old, shot at high zoom or posted without a location. Before changing your plans or trying to get closer, find the date of the event and compare it with the official bulletin.
What this means for a Dream Island excursion
Dream Island does not promise sightings of active lava. We offer a geological and natural experience on Etna, with a route planned according to the conditions under which access is permitted. If activity, wind or visibility makes an area inaccessible, the itinerary may be adapted: that is a professional safety measure, not a way to conceal information.
Half-day Etna trekking
An introduction to Etna North, among the Sartorius Craters and a cave.
€60
Etna North summit craters
A high-altitude excursion subject to the day’s conditions and access restrictions.
€120
Valle del Bove and Serracozzo Cave
A roughly 6 km hike with 500 m of elevation change: some walking experience is needed.
€100
- The half-day tour on Etna North normally visits landscapes such as the 2002 lava-flow front, the Sartorius Craters and a cave: it does not need an ongoing eruption to be worthwhile.
- The summit-crater excursion expressly depends on volcanic activity, weather and restrictions. The maximum altitude should never be treated as guaranteed in advance.
- The Valle del Bove/Serracozzo trek offers a privileged view of the eastern flank, but requires good fitness and remains subject to conditions.
What to do if you encounter ash or smell sulfur
Do not head towards the plume. Follow the guide, staff and authorities; move away from low-lying or poorly ventilated areas. In ash, protect your eyes, close vehicle windows and use respiratory protection if the authorities recommend it. Anyone with asthma or respiratory conditions should be particularly cautious and seek medical advice.
Frequently asked questions about Etna’s “smoke”
If Etna looks smoky, does that mean it is about to erupt?
Not necessarily. Degassing is common. Only scientific monitoring can interpret significant changes and possible scenarios.
Is a white plume only steam?
It may contain a great deal of condensed steam, but also other volcanic gases. Colour does not allow its composition to be measured.
Is ash dangerous?
It can irritate eyes and airways, reduce visibility and damage engines or equipment. Follow local recommendations and do not improvise a visit.
Can I book a tour when a plume is visible?
You can ask about availability, but the itinerary will be confirmed or changed according to the conditions and rules in force that day.
Sources for understanding what is happening
To distinguish imagery from actual phenomena, consult: