Rains in the northwest city of Ha’il are expected to flood the Al Adeera valley, according to media reports.
Meanwhile, witnesses reported that villagers 70 kilometers west of Ha’il were taking shelter on the rooftops of houses, mosques, and even mountaintops as the flooding began.
The desert kingdom has in the past been criticized for its lack of preparedness for such situations, as flooding is rare in that part of the world.
Residents were killed during flash floods in Riyadh, Baha, and Ha’il on May 13. The rain was reportedly the heaviest in more than 25 years.
Floods in the port city of Jeddah, located on the Red Sea, killed 123 people in 2009 and 10 others in 2011.