As of today, past peak, season runs to ~June 30. Earth Exhibit tracks the live conditions and flags it the moment it is on.
Each spring the Porcupine Caribou Herd (PCH) migrates from wintering ranges to the Arctic coastal plain to calve.
Tens of thousands congregate on low-lying tundra where snowmelt and new plant growth provide forage and concealment for calves.
The event is ecologically and culturally important across northeastern Alaska and adjacent Yukon.
Where to see it
A taste of where to see it. The full map, exact coordinates and the best timing for each spot live in the app.
| Viewing spots |
|---|
| Arctic National Wildlife Refuge Coastal Plain (Canning River Delta) |
| Kaktovik Shoreline and Barrier Islands Viewing |
| + 1 more spot, with exact coordinates and timing, in the app → |
This is the short version
This page shows a taste. The app has the full list of where to see this, the exact timing, and live conditions for 1,000+ natural phenomena worldwide, so you know the moment one is genuinely worth the trip.