Mammatus (also called mamma[1] or mammatocumulus, meaning "mammary cloud") is a cellular pattern of pouches hanging underneath the base of a cloud, typically a cumulonimbus …

2006年10月1日 · Most commonly observed on the underside of cumulonimbus anvils, mammatus also occur on the underside of cirrus, cirrocumulus, altocumulus, altostratus, and …

Dark-based storm cloud capable of impressive vertical growth. Cumulonimbus (from Latin cumulus 'swell' and nimbus 'cloud') is a dense, towering, vertical cloud, [1] typically forming …

2024年12月20日 · Mammatus clouds form when cool air is trapped beneath the anvil of a cumulonimbus cloud, causing rapid descent and the creation of pouches or sacks on the …

2025年2月20日 · Mammatus clouds are actually altocumulus, cirrus, cumulonimbus, or other types of clouds that have these pouch-like shapes hanging out of the bottom. The pouches are …

2024年8月29日 · Intense thunderstorms that form extensive anvils (Cumulonimbus capillatus incus) can produce enormous ‘fields’ of mammatus clouds. How do mammatus clouds form, …

Mammatus clouds do not always occur with cumulonimbus clouds, but when they do they are often very eye-catching. This example was during a summer thunderstorm. The National …

2023年11月30日 · Although they are often associated with cumulonimbus anvil, which are essentially giant masses of unstable air, mammatus can occasionally form in other types of …

2024年4月26日 · Mammatus clouds are visually striking pouch-like structures that typically form below the base of a cumulonimbus cloud formation. They form as a result of cold sinking air …

With such an otherworldly appearance, mamma are a must-have for any cloud collection. They can be found on a whole range of cloud types but the most dramatic examples occur on the …