The cause will be an influx of hot air from North Africa:
The death toll in Pakistan's southern port city of Karachi from the latest spell of monsoon rains which started last week went up to around 20 by Monday night, rescue workers and local media reported.
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Strong snowstorms hits Europe next week
Eta, the slow-churning storm barreling towards the eastern coast of Central America, was upgraded to "a major hurricane" Monday, according to the National Hurricane Center.