European natural gas futures rose more than 3.5% to €36/MWh, hitting a five-month high on supply issues and lower wind power output. Delays in taking Norway's Troll gas field out of maintenance reduced Norwegian gas flows by 12 million cubic meters per day on Thursday morning, according to TSO Gassco. The field, which typically produces 133 million cubic meters per day, was shut down on Monday and Tuesday. Despite this, Norwegian gas flows to Europe increased to 279.9 million cubic meters per day from 264 million cubic meters per day on Wednesday. Wind speeds are also expected to...