Natural gas futures on Friday concluded a fifth consecutive weekly decline, led lower by abating cooling demand, increasing production and mounting storage. The October Nymex gas futures contract settled at $6.828/MMBtu to close the week’s final session, down 26.1 cents day/day. November fell 20.1 cents to $6.992.

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NGI’s Spot Gas National Avg. plunged $1.260 to $5.125. It fell four out of five sessions over the past week. The one day it steered clear of the red, the national average was flat.

Weather forecasts pointed to mild conditions from Chicago to Boston through next week, with long-range outlooks calling for benign temperatures through much of October.

What’s more, the National Hurricane Center on Friday said it was tracking a tropical storm in the central...