In a holiday-abbreviated period in which futures struggled, weekly cash prices failed to sustain early momentum and finished in negative territory.  

Spot markets started the week with solid gains before dipping lower late in the covered period. The late declines sent NGI’s Weekly Spot Gas National Avg. for the May 31-June 2 period down 24.0 cents to $1.810. The trading week was shortened due to the Memorial Day holiday on Monday.

Weather conditions during the week were mild, leaving the natural gas physical market short on cooling demand. This more than offset maintenance projects that caused brief supply interruptions from the Midwest to the Northeast.

At the close of trading Friday, Katy was down 44.0 cents to $1.730, while Cove Point was off 39.0 cents to $1.835 and...