1. The seasonal reversing of wind is a monsoon.
2. The Bermuda High, and the intense heating of the Mohave Desert called a thermal low.
3. It brings a lot of rain to the desert.
4. It could cause over watering of crops, and flooding.
5. There was heavy rainfall which because they were in a drought the instant change was unprepared for causing people to stay in there homes and drown to death.
6. If there bad or not depends on the situation, if it doesn't cause flooding it then it is good, if it does it is bad.