🌋 VolcanoesSignificant
Volcano watch: Great Sitkin
- Time
- 7/18/2026, 7:40:52 PM UTC
- Coordinates
- 52.076, -176.130
- Data source
- vhp
- Alert level
- WATCH
- Aviation color code
- ORANGE
- Region
- Alaska
Event timeline
- Sat, 18 Jul 2026 18:10:50 GMTSignificantVolcano watch: Great Sitkin
Snapshots are recorded when the event first appears or its severity changes.
🧰 What to do
Before
- •Know your community's evacuation plan and routes
- •Prepare goggles and N95 masks for ashfall
- •Keep vehicles fueled and a kit ready if near an active volcano
During
- •Evacuate if ordered; ash and gases can be deadly
- •If staying: close windows/doors/vents, wear a mask outdoors
- •Avoid river valleys and low areas (lahar/mudflow paths)
After
- •Avoid ashfall driving — ash damages engines and cuts visibility
- •Clear heavy ash from roofs carefully (wet ash is very heavy)
- •Wear a mask during cleanup; keep ash away from children
Guidance condensed from Ready.gov
AlertAtlas aggregates official hazard data (USGS, NOAA/NWS, NHC, NASA EONET, GDACS, SMN/CONAGUA México CC BY 4.0, INMET Brasil). Event details update every few minutes while the event is active; pages for expired events are removed. Always follow guidance from local authorities.