Wednesday marked the official start of the hurricane season, and this year could be a difficult one for storm predictions.

The National Hurricane Center is expecting up to 18 named tropical storms with three to six of them becoming major hurricanes.

However, the El Nino and La Nina effects are somewhat quiet this year, making it harder for forecasters to make predictions about possible storms. These are the strong warming and cooling trends that can either rev up hurricanes or suppress them.

Both are expected to be neutral this year, leaving meteorologists scratching their heads over just how bad this hurricane season will be.