GRID: Cold weather across U.S. prompts gas shortage warning in Calif. Debra Kahn, E&E reporter Published: Friday, February 7, 2014 Cold weather across the United States is prompting California to conserve natural gas supplies. Please subscribe to EnergyWire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.