Rare March Pileus Cloud
These type of clouds are formed by strong updraft at lower altitudes, acting upon moist air above, causing the air to cool to its dew point. As such, they are usually indicators of severe weather, and a pileus found atop a cumulus cloud often foreshadows transformation into a cumulonimbus cloud, as it indicates a strong updraft within the cloud.
Today, with temperatures in the low 70's, these clouds would have developed into thunderstorms if it were 4 to 6 weeks later when the sun's ability to enhance instability in the atmosphere is much greater. Note the virga below the dark cloud base.
Picture of the Day
Rare March Pileus Cloud
These type of clouds are formed by strong updraft at lower altitudes, acting upon moist air above, causing the air to cool to its dew point. As such, they are usually indicators of severe weather, and a pileus found atop a cumulus cloud often foreshadows transformation into a cumulonimbus cloud, as it indicates a strong updraft within the cloud.
Today, with temperatures in the low 70's, these clouds would have developed into thunderstorms if it were 4 to 6 weeks later when the sun's ability to enhance instability in the atmosphere is much greater. Note the virga below the dark cloud base.
Picture of the Day