Hurricane Erin Is Disrupting Both Europe’s Weather and Forecasts

Hurricane Erin is muddling computer models and making forecasters, analysts and traders question the accuracy of the outlook for heat, wind and storms across Europe next week.

Erin, which churned through the Atlantic 330 kilometers (205 miles) off the North Carolina coast on Thursday, is set to create atmospheric ripple effects that could amplify heat and storms in Europe.

The uncertainty has caused key computer weather models to diverge, flip-flopping between best guesses of the storm’s downstream effects. That includes gaps between traditional predictions and ones generated by AI models.

After rapidly and temporarily intensifying into a chart-topping storm, Hurricane ...