Cumulonimbus with Mammatus | |
Family | D |
Type | Cumulonimbus |
Occurrence | Worldwide except Antarctica |
Altitude | 4500-7500m (mammatus formation) |
Formation | Strong convection followed by reverse-direction convection, see Hypotheses of mammatus formation |
Precipitation | Heavy rain, hail |
Potential Hazards | Severe turbulence in cloud, strong winds, hail, lightning, tornadoes, squalls |
Clouds | |
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High Clouds (Family A): | Cirrus (Ci) • Cirrus aviaticus • Cirrus intortus • Cirrus radiatus • Cirrus uncinus • Cirrus Kelvin-Helmholtz • Cirrostratus (Cs) • Cirrocumulus (Cc) • Pileus • Contrail |
Middle Clouds (Family B): | Altostratus (As) • Altostratus undulatus • Altocumulus (Ac) • Altocumulus undulatus • Altocumulus mackerel sky • Altocumulus castellanus • Altocumulus lenticularis |
Low Clouds (Family C): | Stratus (St) • Orographic stratus • Fog • Nimbostratus (Ns) • Cumulus humilis (Cu) • Cumulus mediocris (Cu) • Stratocumulus (Sc) |
Vertical Clouds (Family D): | Cumulonimbus (Cb) • Cumulonimbus incus • Cumulonimbus calvus • Cumulonimbus with mammatus • Cumulus congestus • Cumulus castellanus • Pyrocumulus • Pyrocumulonimbus |