Labor strikes continue to impact LNG import terminals and upend energy flows in France, which is being forced to tap into its natural gas stocks as vessels head elsewhere amid the disruptions.

Europe LNG Capacity

The strikes broke out a month ago, impacting ports, power production, air travel, refineries and other key aspects of the economy. No vessels have discharged at Elengy’s Fos Cavaou, Fos Tonkin and Montoir-de-Bretagne liquefied natural gas import terminals since before the strikes were announced March 6. Operations also have been limited at the Dunkirk facility operated by Fluxys, the nation’s only other import terminal.

Another day of nationwide strikes were planned for Thursday to protest President Emmanuel Macron’s decision last month to use constitutional powers to raise the...