Cirrus is the wispiest cloud.
'Cirrus' is a type of cloud characterized by thin, wispy strands high in the sky.
This type of cloud would be known as a stratus cloud
Stratus
Many cloud types can lead to a gray sky. Stratus is one of the more common ones.
The lowest type of cloud in the sky is typically stratus clouds. These clouds often appear as a uniform layer that can cover the entire sky, creating overcast conditions. Stratus clouds are usually found between the surface and about 6,500 feet in altitude.
The type of lightning that branches across the sky is called "forked lightning." This occurs when the lightning bolt splits into multiple branches as it travels through the atmosphere, creating a stunning visual display in the sky. Forked lightning is a common sight during thunderstorms and is caused by the electrical discharge seeking the path of least resistance.
A mackerel sky is a type of altocumulus cloud formation that resembles the patterns on the skin of a mackerel fish. These clouds are often seen in the middle layer of the atmosphere and can indicate changes in weather conditions.
Stratus
Sky lightning is more commonly known as a lightning bolt or simply lightning.
The type of cloud that is low and blanket-like is called a stratus cloud. Stratus clouds often cover the sky in a uniform layer, resembling a thick blanket. They are typically found at low altitudes and are associated with overcast or gray sky conditions.
rain cloud fluffy cloud dark cloud wispy cloud
The cloud was a pillow in the sky.