Northern Natural Gas said it is declaring a System Underrun Limitation for all market-area zones effective Saturday due to “significantly greater system-weighted temperatures compared to normal.” The pipeline’s bulletin board said the normal system temperature is 53 degrees at this time of year, but it projected averages of 60, 67, 66 and 63 for Thursday, Friday, Saturday and Sunday, respectively.

Pacific Gas and Electric extended a systemwide Stage 2 high-inventory OFO through at least Friday but loosened the tolerance on positive daily imbalances from 5% to 12%. It anticipated California Gas Transmission system linepack rising well above maximum target levels by Sunday.

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