December natural gas prices slumped to a new contact low earlier this morning. Some traders pointed to cash market weakness as a force contributing to the decline in futures, with Henry Hub prices falling toward a new 2 year low. An expanding area of above normal temperatures throughout the eastern half of the US continues to weigh on demand prospects for natural gas. The Commitments of Traders Futures and Options report as of November 8th showed non-commercial traders were net short 160,627 contracts, a decrease of 1,229. Non-commercial and nonreportable traders combined held a net short position of 150,283 contracts, an increase of 8,171 in their net short position.