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Montana Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year  (Million Cubic Feet)
Montana Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year (Million Cubic Feet)
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  1990 705 2,167 1,643 1,813 -2,403 355 272 -26 131 59 561 542
  1991 -4,514 -2,633 -2,648 -1,702 -3,097 151 -280 -908 -3,437 -6,076 -7,308 -6,042
  1992 -68,442 -68,852 -67,958 -67,769 -67,999 -68,527 -69,209 -69,883 -70,428 -70,404 -71,019 -73,067
  1993 -14,437 -17,034 -19,377 -21,219 -23,373 -24,811 -24,628 -25,093 -24,213 -22,944 -22,384 -19,989
  1994 -18,713 -19,954 -18,358 -17,429 -15,333 -12,802 -12,658 -11,874 -10,555 -9,434 -8,353 -7,819
  1995 -7,494 -3,827 -3,353 -1,774 -1,433 -1,101 464 2,584 1,908 321 -1,020 -3,599
  1996 -6,352 -7,794 -10,982 -12,425 -14,484 -13,837 -13,490 -13,192 -10,766 -10,545 -12,251 -12,502
  1997 -11,898 -12,444 -11,156 -12,320 -10,693 -11,846 -12,399 -13,563 -15,594 -16,274 -14,281 -11,946
  1998 -10,717 -9,288 -9,715 -8,129 -6,404 -6,013 -6,428 -4,243 -1,494 1,053 1,207 462
  1999 -24 -845 -238 -1,343 -3,345 -3,585 -4,086 -6,068 -8,835 -10,887 -9,471 -8,231
  2000 -7,401 -7,217 -6,971 -6,264 -7,354 -8,683 -8,455 -8,744 -9,274 -8,781 -11,309 -13,803
  2001 -13,933 -15,247 -14,714 -14,092 -10,668 -7,090 -3,589 -876 3,034 4,633 7,859 9,136
  2002 -1,973 -234 -2,206 -2,919 -3,942 -4,061 -2,995 -2,776 -3,338 -4,980 -6,404 -5,988
  2003 4,975 3,009 2,982 3,909 3,178 1,012 -3,235 -6,352 -9,012 -7,307 -8,021 -7,926
  2004 -8,871 -8,767 -7,799 -8,068 -7,596 -6,936 -5,363 -2,922 1,368 2,927 5,007 3,264
  2005 2,699 3,644 3,367 4,334 5,445 6,741 6,995 5,818 2,216 111 -143 120
  2006 2,916 2,470 2,967 5,352 9,172 11,918 13,969 16,155 19,599 21,013 18,124 17,896
  2007 14,824 13,349 12,464 9,253 6,423 3,733 2,211 715 -2,727 -3,470 -553 -1,284
  2008 -2,428 -2,863 -4,400 -7,072 -10,050 -12,296 -14,265 -14,985 -14,091 -15,609 -16,397 -17,204
  2009 -16,269 -14,032 -12,539 -6,844 1,623 8,340 14,006 19,853 24,630 28,451 33,721 32,634
  2010 31,728 29,148 31,647 35,037 33,741 30,382 27,200 22,736 17,532 12,233 3,532 3,718
  2011 3,102 2,166 -2,516 -10,755 -18,630 -21,623 -23,713 -25,096 -25,337 -22,520 -20,099 -17,556
  2012 -15,523 -12,927 -8,054 -2,937 125 2,590 3,826 4,824 6,062 5,247 5,648 4,323
  2013 2,842 2,404 -928 -6,346 -7,421 -9,007 -9,316 -8,606 -6,843 -8,269 -11,616 -12,926
  2014 -12,629 -14,814 -15,650 -15,904 -16,168 -16,776 -17,974 -20,915 -24,510 -22,108 -20,279 -16,007
  2015 -13,575 -9,545 -4,525 -884 -101 876 1,409 2,782 2,931 2,239 3,471 3,197
  2016 3,391 4,649 5,247 7,840 10,497 12,277 12,152 12,172 12,262 11,994 12,049 7,364
  2017 4,683 2,698 741 -1,199 -2,336 -3,061 -2,763 -3,835 -1,935 -1,905 -3,435 -2,549
  2018 -2,493 -4,919 -7,932 -9,493 -9,475 -9,635 -9,022 -6,948 -8,589 -11,879 -11,549 -7,230
  2019 -6,027 -5,790 -3,084 -1,705 -3,074 -2,873 -3,257 -4,099 -2,589 -985 -947 -2,754
  2020 -3,039 -2,146 -1,760 -1,226 1,684 3,213 4,258 4,750 5,632 8,563 8,706 6,593
  2021 5,451 4,084 2,013 719 -2,034 -4,097 -5,057 -3,940 -3,271 -3,237 -2,337 -2,153
  2022 -2,263 -1,663 -1,200 -909 1,278 3,449 4,885 5,147 4,568 4,604 2,000 1,842
  2023 4,252 4,733 3,313 4,574 4,972 5,053 5,705 3,896 1,593 371 3,007 5,021
  2024 2,706 3,005 3,102 4,165 4,649 5,965 6,274 7,314 9,510 10,232 9,046 7,850
  2025 7,098 5,572


- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
Release Date: 4/30/2025
Next Release Date: 5/30/2025

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