In the Sahara desert in the southeast of Morocco, floods occurred for the first time in almost 50 years.
Two days of heavy rainfall exceeded the annual average and submerged parts of the desert.
Stretching over a dozen countries in North, Central and West Africa, the Sahara is the largest hot desert in the world.
"It's been 30 to 50 years since we had this much rain in such a short period of time," Hussin Juabeb, an official with Morocco's meteorological agency, told The Associated Press (AP).
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Southeast Morocco is one of the driest places in the world, it rarely rains in late summer.
Meteorologists call such rare precipitation an extratropical storm.
As the air holds more moisture, it encourages evaporation and causes more storms, the Moroccan Meteorological Agency told AP.
NASA satellite images show a full lakebed between the town of Zagora and Tata that has been dry for 50 years.
According to data from the World Meteorological Organization (WMO), water cycles around the world are changing more and more frequently.
"As a result of rising temperatures, the hydrological cycle has accelerated," WMO Secretary General Celeste Saulo said at a press conference.
"It's also more erratic and unpredictable, and we're dealing with too much or too little water."
Extreme weather is becoming more frequent due to global warming, so scientists predict that similar storms could hit the Sahara in the future.
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