As of today, peak season now, through ~June 30. Earth Exhibit tracks the live conditions and flags it the moment it is on.
Mammatus (mamma) are pouch-shaped lobes that protrude from the underside of a cloud, most commonly the anvil of a cumulonimbus.
They form when colder, denser cloud material descends into drier air beneath the cloud base.
Mammatus are visually striking, often form in association with severe convective storms, and are short-lived, dependent on the storm lifecycle.
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 |
|---|
| Pawnee Buttes Trailhead parking (Pawnee National Grassland) - vantage for open-plains storms |
| Dodge City Regional Airport public parking (DDC) - horizon for Plains storms |
| + 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.