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Weekly Natural Gas Storage Report

for week ending May 11, 2018   |   Released: May 17, 2018 at 10:30 a.m.   |   Next Release: May 24, 2018

Working gas in underground storage, Lower 48 states Summary text CSV JSN
    Historical Comparisons
Stocks
billion cubic feet (Bcf)
  Year ago
(05/11/17)
5-year average
(2013-17)
Region 05/11/18 05/04/18 net change implied flow   Bcf % change Bcf % change
East 275     243     32     32       365     -24.7     373     -26.3    
Midwest 267     240     27     27       538     -50.4     421     -36.6    
Mountain 98     92     6     6       160     -38.8     131     -25.2    
Pacific 204     195     9     9       243     -16.0     254     -19.7    
South Central 694     662     32     32       1,054     -34.2     860     -19.3    
   Salt 216     204     12     12       336     -35.7     262     -17.6    
   Nonsalt 477     458     19     19       717     -33.5     597     -20.1    
Total 1,538     1,432     106     106       2,359     -34.8     2,039     -24.6    

Note: Some natural gas storage operators reported net withdrawals from base gas, beginning with the week ending April 6, 2018, and ending with the week ending May 4, 2018. The cumulative net withdrawals of base gas were treated as negative working gas stocks and are reflected in the working gas inventories.

Summary

Working gas in storage was 1,538 Bcf as of Friday, May 11, 2018, according to EIA estimates. This represents a net increase of 106 Bcf from the previous week. Stocks were 821 Bcf less than last year at this time and 501 Bcf below the five-year average of 2,039 Bcf. At 1,538 Bcf, total working gas is within the five-year historical range.

For information on sampling error in this report, see Estimated Measures of Sampling Variability table below.

Working Gas in Underground Storage Compared with Five-Year Range

Note: The shaded area indicates the range between the historical minimum and maximum values for the weekly series from 2013 through 2017. The dashed vertical lines indicate current and year-ago weekly periods.



Estimated measures of sampling variabilityDownload History (April 2015 to Present)
   
Coefficient of Variation for Stocks
% of working gas
  Standard Error for Net Change
billion cubic feet (Bcf)
Region 05/11/18 05/04/18   net change
East 2.1     2.3       0.4    
Midwest 1.4     1.4       0.8    
Mountain 2.2     2.2       0.4    
Pacific 2.3     2.3       0.5    
South Central 1.9     1.9       0.8    
   Salt 2.4     2.5       0.6    
   Nonsalt 2.5     2.5       0.6    
Total 1.0     1.1       1.4    

Note: For the week ending May 4, 2018, cumulative net withdrawals from base gas are not reflected in estimated standard errors.