Red Cloud is often used as a proper noun to refer to the Lakota Sioux Indian chief of the same name. However, there are several synonyms that can be applied to this phrase, such as crimson cloud, scarlet cloud, and fiery cloud. These synonyms emphasize the striking red color associated with the cloud and evoke a sense of danger or passion. Another alternative might be to describe the weather event more broadly, using phrases such as "red-hued storm" or "blood-red sky." No matter which synonym is chosen, it is sure to add color and depth to any description of this atmospheric phenomenon.