By Scott DiSavino
       May 16 (Reuters) - U.S. natural gas futures climbed about 3% to a 15-week high on Thursday on a smaller-than-expected
storage build and another drop in output.
    Also supporting the price increase was a rise in feedgas to liquefied natural gas (LNG) export plants with Cheniere Energy's
 Sabine Pass export plant in Louisiana expected to return to full service.
    The U.S. Energy Information Administration (EIA) said utilities added a smaller-than-expected 70 billion cubic feet (bcf) of
gas into storage during the week ended May 10. Analysts said that was lower than usual for this time of year due to reduced output
in recent weeks.
    That was below the 77-bcf build analysts forecast in a Reuters poll and compares with an increase of 93 bcf in the same week
last year and a five-year (2019-2023) average rise of 90 bcf for this time of year.
    Front-month gas futures for June delivery on the New York Mercantile Exchange rose 7.5 cents, or 3.1%, to $2.491 per
million British thermal units (mmBtu) at 10:36 a.m. EDT (1436 GMT), putting the contract on track for its highest close since Jan.
26.
    That kept the front-month in technically overbought territory for a 10th straight day for the first time since April 2022.
    Traders noted the futures price increase was kept in check by the tremendous oversupply of gas in storage. Analysts forecast
gas stockpiles were about 31% above normal levels for this time of year.
    
    SUPPLY AND DEMAND
    Financial firm LSEG said gas output in the Lower 48 U.S. states fell to an average of 97.1 billion cubic feet per day (bcfd)
so far in May, down from 98.2 bcfd in April. That compares with a monthly record high of 105.5 bcfd in December 2023.
    On a daily basis, output dropped by around 2.4 bcfd over the past four days to a preliminary 17-week low of 95.7 bcfd on
Thursday.
    That put U.S. gas production down about 10% so far in 2024 after several energy firms, including EQT and Chesapeake
Energy, delayed well completions and cut back on other drilling activities after prices fell to 3-1/2-year lows in
February and March.
    EQT is the biggest U.S. gas producer and Chesapeake is on track to become the biggest producer after its merger with
Southwestern Energy.
    Meteorologists projected weather across the Lower 48 states would remain mostly warmer than normal through May 31.
    LSEG forecast gas demand in the Lower 48, including exports, would hold near 92.8 bcfd over the next two weeks. The forecast
for this week was higher than LSEG's outlook on Wednesday.
    Gas flows to the seven big U.S. LNG export plants rose from an average of 11.9 bcfd in April to 12.7 bcfd so far in May with
the return to full service of Freeport LNG's 2.1-bcfd export plant in Texas. That compares with a monthly record high of 14.7 bcfd
in December.
    On a daily basis, LNG feedgas was on track to rise from 12.4 bcfd on Wednesday to 13.2 bcfd on Thursday as flows to the
4.5-bcfd Sabine Pass plant rise from an eight-month low of 3.8 bcfd on Wednesday to 4.6 bcfd on Thursday.
    LNG export plants consume a little more gas than they can turn into LNG since they use some of that fuel to power the
equipment used to liquefy gas.
                    
                                                                   Week ended   Week ended    Year ago     Five-year         
                                                                     May 10        May 3       May 10       average    
                                                                     Actual       Actual                    May 10     
 U.S. weekly natgas storage change (bcf):                             +70           +79          +93          +90           
 U.S. total natgas in storage (bcf):                                 2,633         2,563        2,212        2,013          
 U.S. total storage versus 5-year average                            30.8%         33.3%                                     
                                                                                                                             
                                                                                                                             
 Global Gas Benchmark Futures ($ per mmBtu)                       Current Day    Prior Day   This Month   Prior Year    Five-Year
                                                                                              Last Year     Average      Average
                                                                                                             2023      (2018-2022)
 Henry Hub                                                            2.43         2.42         2.30         2.66         3.60
 Title Transfer Facility (TTF)                                        9.65         9.40         9.97         13.04        14.39
 Japan Korea Marker (JKM)                                            10.80         10.45        10.45        14.39        14.31
                                                                                                                             
                                                                                                                             
 LSEG Heating (HDD), Cooling (CDD) and Total (TDD) Degree Days                                                               
 Two-Week Total Forecast                                          Current Day    Prior Day   Prior Year     10-Year      30-Year
                                                                                                             Norm         Norm
 U.S. GFS HDDs                                                         26           28           39           56           50
 U.S. GFS CDDs                                                        116           115          81           89           95
 U.S. GFS TDDs                                                        143           143          120          145          145
                                                                                                                             
 LSEG U.S. Weekly GFS Supply and Demand Forecasts                                                                            
                                                                   Prior Week     Current     Next Week    This Week    Five-Year
                                                                                   Week                    Last Year   (2019-2023)
                                                                                                                       Average For
                                                                                                                          Month
 U.S. Supply (bcfd)                                                                                                               
 U.S. Lower 48 Dry Production                                             97.2         97.2         97.2        102.5         94.4
 U.S. Imports from Canada                                                  7.5          7.1          6.9          6.9          7.5
 U.S. LNG Imports                                                          0.0          0.0          0.0          0.0          0.0
 Total U.S. Supply                                                       104.7        104.3        104.1        109.7        101.9
                                                                                                                                  
 U.S. Demand (bcfd)                                                                                                               
 U.S. Exports to Canada                                                    2.1          1.8          1.8          2.8          2.4
 U.S. Exports to Mexico                                                    6.6          6.6          6.6          6.1          5.6
 U.S. LNG Exports                                                         12.4         12.9         13.0         12.8          8.8
 U.S. Commercial                                                           5.6          5.2          4.8          5.1          5.8
 U.S. Residential                                                          6.0          5.1          4.4          5.0          6.9
 U.S. Power Plant                                                         32.7         32.6         33.7         34.2         28.4
 U.S. Industrial                                                          21.8         21.7         21.6         21.3         21.5
 U.S. Plant Fuel                                                           4.8          4.8          4.8          4.8          4.8
 U.S. Pipe Distribution                                                    1.9          1.9          1.9          1.9          1.9
 U.S. Vehicle Fuel                                                         0.1          0.1          0.1          0.1          0.1
 Total U.S. Consumption                                                   72.9         71.4         71.3         72.4         69.4
 Total U.S. Demand                                                        94.1         92.7         92.8         94.1         86.2
                                                                                                                                  
                                                                                                                       
 U.S. Northwest River Forecast Center (NWRFC) at The Dalles Dam   Current Day   Prior Day       2023      2022         2021      
                                                                  % of Normal   % of Normal  % of Normal  % of Normal  % of Normal
                                                                    Forecast     Forecast      Actual       Actual       Actual
 Apr-Sep                                                               78           76           83           107          81
 Jan-Jul                                                               79           77           77           102          79
 Oct-Sep                                                               80           79           76           103          81
                                                                                                                        
                                                                                                                        
 U.S. weekly power generation percent by fuel - EIA                                                                               
                                                                   Week ended   Week ended   Week ended   Week ended   Week ended
                                                                     May 17       May 10        May 3       Apr 26       Apr 19
 Wind                                                                  10           13           14           16           16
 Solar                                                                 6             6            6            6            6
 Hydro                                                                 8             7            7            7            7
 Other                                                                 1             1            1            1            2
 Petroleum                                                             0             0            0            0            0
 Natural Gas                                                           40           41           40           37           37
 Coal                                                                  14           14           13           13           13
 Nuclear                                                               20           19           19           19           20
                                                                                                                             
 SNL U.S. Natural Gas Next-Day Prices ($ per mmBtu)                                                                          
 Hub                                                              Current Day    Prior Day                                   
 Henry Hub                                                   2.12         2.14                                       
 Transco Z6 New York                                        1.62         1.49                                       
 PG&E Citygate                                             2.61         2.67                                       
 Eastern Gas (old Dominion South)                         1.45         1.44                                       
 Chicago Citygate                                           1.90         1.80                                       
 Algonquin Citygate                                         1.65         1.63                                       
 SoCal Citygate                                           1.92         1.95                                       
 Waha Hub                                                 0.31         0.17                                       
 AECO                                                     0.74         0.76                                       
                                                                                                                                  
 SNL U.S. Power Next-Day Prices ($ per megawatt-hour)                                                                             
 Hub                                                              Current Day    Prior Day                                        
 New England                                             31.50        30.50                                       
 PJM West                                                45.00        41.50                                       
 Ercot North                                             40.25        20.00                                       
 Mid C                                                   12.00        53.00                                       
 Palo Verde                                               5.25        17.50                                       
 SP-15                                                    3.00        15.00                                       
 
 (Reporting by Scott DiSavino; editing by Jonathan Oatis)