Tropical Cyclone Iris is being battered by wind shear so strong that it doesn't even ... of thunderstorms where cloud top temperatures as cold or colder than minus 70 degrees Fahrenheit (minus ...

The rains were caused by a shear line which occurs when cold fronts interact with easterly trades, according to the Philippine Atmospheric, Geophysical and Astronomical Services Administration.

This is due to very warm sea surface temperatures and weak wind shear in this region. Tropical systems this time of year tend to be steered toward the northeast from cold fronts and strong troughs ...