Climate Watch predicts fewer but more violent storms across the summer of 2017, with generally mild temperatures in the Northern Hemisphere. However, if circulation extends into the upper stratosphere where temperature differences are now unprecedented, storms will rapidly and suddenly increase in intensity. As long as arctic meltwater continue to pour into the northern oceans, hemispheric temperatures will be mild, but there will be spikes into very high heat conditions, with continental interiors at serious risk of temperature increases that are right at the edge of survivability for humans. Due to the slowing of the jet stream, when such conditions occur, they could linger for long periods of time.
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