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|View History: Monthly Download Data (XLS File)                                                                       
|View History: Monthly                                                                                                 
|View History: Monthly                                                                                                 
|View History:                                                                                                         
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|Montana Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year  (Million Cubic Feet)
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|Montana Natural Gas in Underground Storage - Change in Working Gas from Same Month Previous Year  (Million Cubic Feet)
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|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 
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|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 
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|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  
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|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 
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|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
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|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 
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|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   |         |         |         |         |         |         |        
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|- = No Data Reported;  -- = Not Applicable;  NA = Not Available;  W = Withheld to avoid disclosure of individual company data.
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|Release Date: 7/31/2024                                                                                                          
|Next Release Date: 8/30/2024