APD Window Closed

Friday, January 28, 2005

Punxsutawney Phil will not emerge from his hole until next Wednesday when the famous groundhog will look for his shadow and predict the end of wintry weather. Today California Gas Transmission stole a little of Phil's thunder, announcing the close of the Abnormal Peak Day (APD) window. What does this mean to natural gas shippers in northern California?

  • The probability of an APD prior to next winter is nearly zero. An APD represents a day so cold that such conditions are only expected once in 90 years. During an APD, Pacific Gas and Electric Company system composite temperatures would fall to 27.4 degrees Fahrenheit or lower, resulting in diversions and/or local curtailments.
  • The chances that Cold Winter Day conditions (system composite temperatures below 38 degrees) will strike this winter are reduced.

For this winter, the possibility of extremely cold temperatures no longer casts its shadow across PG&E's gas service territory. Diversions or local curtailments driven by cold weather are now highly unlikely, regardless of whether Phil sees his shadow or not.

Please contact your CGT Account Services Representative if you have any questions about the APD window.

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