Even with all the radar technology that's available, it's hard to predict what any storm will do (i.e. Hurricane Jeanne). Let's face it, mother nature is not easy to predict.
Erika, which threatened South Florida last week, was frustrating to forecasters because it didn't want to behave the way some models had pegged it. But, that's not completely unusual according to James Franklin. He oversees forecasters at the National Hurricane Center.
What about Erika made it hard to forecast?