where did it originate?
Africa
Hurricane Carmen
A destructive storm with widespread impacts, Carmen originated as a tropical disturbance that emerged from Africa toward the end of August. 
when did hurricane carmen occur? Middle of August 1974 which country did it hit? Africa
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Hurricane Carmen [SEP] Introduction
Hurricane Carmen was the most intense tropical cyclone of the 1974 Atlantic hurricane season. A destructive storm with widespread impacts, Carmen originated as a tropical disturbance that emerged from Africa toward the end of August. The disturbance traveled westward, spawning a tropical depression east of the Lesser Antilles on August 29. The storm moved through the Caribbean Sea, and in an environment conducive to intensification, it quickly strengthened to its initial peak intensity as a Category 4 hurricane on the Saffir–Simpson Hurricane Scale. Carmen moved ashore on the Yucatán Peninsula, where, despite striking a sparsely populated region, it caused significant crop damage and killed several people.