Hurricane Sally gains strength as it nears southern US

Hurricane Sally picked up strength as it edged towards the US Gulf Coast early Wednesday, with forecasts of drenching rains that could provoke "historic" and potentially deadly flash floods.

NASA satellite finds a wedge-shaped Tropical Storm Paulette

Wind shear was affecting both Tropical Storm Paulette and Rene in the Atlantic Ocean on Sept. 11. Infrared imagery from NASA's Aqua satellite showed that strong southwesterly wind shear pushed against Paulette creating a ...

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