But as the climate has warmed, and offshore storms soak up more moisture from heated seas, the amount and distribution of rain is changing. While the number of rainy days has decreased, extreme events occur more often, pushing overall rainfall totals higher. The Post’s analysis found the strongest moisture plumes have greatly increased the chance for heavy rainfall across Oman, and have intensified over the last three decades. These wetter storms are dropping more rain into wadis, leading to more flash flooding and destruction.