Bertha is actively being torn apart by wind shear, a hallmark of El Niño's impact on Atlantic hurricane season. But don't thank El Niño just yet.

The tropical system is forecast to spread heavy rain and storm surge threats as its wind field expands.

Tropical Storm Bertha continues to move slowly in the northeastern Gulf, where it is expected to bring periods of rain, gusty winds and coastal flooding to parts of the Gulf Coast…