By Scott DiSavino
       Jan 3 (Reuters) - U.S. natural gas futures gained about 2% to a one-week high on Wednesday on a decline in daily output
and forecasts for colder weather in mid January than previously expected.
    That price increase came despite forecasts for milder weather and lower heating demand this week and next than previously
expected, and a small decline in the amount of gas flowing to U.S. liquefied natural gas (LNG) export plants.
    Traders noted mild weather this week and next should enable utilities to keep pulling less gas from storage in coming weeks
because heating demand is currently lower than usual.
    Analysts forecast there was about 11.6% more gas in storage than normal at this time of year.
    Front-month gas futures for February delivery on the New York Mercantile Exchange were up 4 cents, or 1.6%, at $2.608
per million British thermal units (mmBtu) at 8:47 a.m. EST (1347 GMT), putting the contract on track for its highest close since
Dec. 27.
    A lack of big price moves in recent weeks has cut historic or actual 30-day close-to-close futures volatility to 44.6%, the
lowest since September 2021 for a second day in a row.
    Historic daily volatility hit a record high of 177.7% in February 2022 and a record low of 7.3% in June 1991. Historic
volatility has averaged 44.8% so far this year, versus 70.5% in 2023 and a five-year (2019-2023) average of 64.3%.
    Even though late January is usually the coldest part of the year, many traders said winter futures for November-March likely
already peaked at $3.608 per mmBtu on Nov. 1 due primarily to recent record production and ample supplies of gas in storage.
    
    SUPPLY AND DEMAND
    Financial firm LSEG said average gas output in the lower 48 U.S. states has slid to 107.5 billion cubic feet per day (bcfd) so
far in January, down from a monthly record of 108.5 bcfd in December.
    Meteorologists projected the weather would remain mostly near to warmer than normal through Jan. 12 before turning colder than
normal from Jan. 13-18.
    With colder weather coming, LSEG forecast U.S. gas demand in the Lower 48, including exports, would rise from 132.7 bcfd this
week to 133.7 bcfd next week. Those forecasts were lower than LSEG's outlook on Tuesday.
    U.S. pipeline exports to Mexico have fallen to an average of 4.2 bcfd so far in January, down from 4.6 bcfd in December and a
monthly record 7.0 bcfd in August.
    Analysts expect exports to Mexico to rise in coming months once U.S.-based New Fortress Energy's plant in Altamira in
Mexico starts pulling in U.S. gas to turn into LNG for export.
    Gas flows to the seven big U.S. LNG export plants have slid to an average of 14.6 bcfd so far in January, down from a monthly
record of 14.7 bcfd in December.
    The U.S. became the world's biggest LNG supplier in 2023, ahead of recent leaders Australia and Qatar, as much higher global
prices fed demand for more exports due in part to supply disruptions and sanctions linked to Russia's war in Ukraine.
    Gas was trading around $10 per mmBtu at the Dutch Title Transfer Facility (TTF) benchmark in Europe and $11 at
the Japan Korea Marker (JKM) in Asia.
    
                                                                   Week ended   Week ended    Year ago     Five-year         
                                                                     Dec 29       Dec 22       Dec 29       average    
                                                                    Forecast      Actual                    Dec 29     
 U.S. weekly natgas storage change (bcf):                             -56           -87         -219          -97            
 U.S. total natgas in storage (bcf):                                 3,434         3,490        2,923        3,077           
 U.S. total storage versus 5-year average                            11.6%         10.0%                                     
                                                                                                                             
                                                                                                                             
 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                                                            2.60         2.57         3.42         2.66         3.60
 Title Transfer Facility (TTF)                                       10.33         9.70         19.79        13.04        14.39
 Japan Korea Marker (JKM)                                            11.50         11.52        24.34        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                                                        458           430          328          439          444
 U.S. GFS CDDs                                                         1             1            5            4            3
 U.S. GFS TDDs                                                        459           431          333          443          447
                                                                                                                             
 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                                            108.8        108.0        108.2        100.7         93.8
 U.S. Imports from Canada8                                                 8.5          9.0          8.8          8.7          9.3
 U.S. LNG Imports                                                          0.0          0.0          0.0          0.0          0.3
 Total U.S. Supply                                                       117.3        117.0        117.0        109.4        103.4
                                                                                                                                  
 U.S. Demand (bcfd)                                                                                                               
 U.S. Exports to Canada                                                    3.4          3.0          2.9          3.1          2.7
 U.S. Exports to Mexico                                                    5.4          4.7          4.7          5.4          5.3
 U.S. LNG Exports                                                         14.7         14.6         14.0         11.9          8.9
 U.S. Commercial                                                          12.8         15.6         16.6         13.4         16.6
 U.S. Residential                                                         20.3         25.9         28.3         21.4         28.6
 U.S. Power Plant                                                         31.0         35.0         33.3         28.2         29.5
 U.S. Industrial                                                          24.3         25.6         25.6         24.0         25.6
 U.S. Plant Fuel                                                           5.4          5.3          5.3          5.4          5.4
 U.S. Pipe Distribution                                                    2.6          2.9          3.0          2.9          2.9
 U.S. Vehicle Fuel                                                         0.1          0.1          0.1          0.1          0.1
 Total U.S. Consumption                                                   96.4        110.4        112.2         95.4        108.7
 Total U.S. Demand                                                       120.0        132.7        133.7        115.8        125.6
                                                                                                                                  
                                                                                                                       
 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           77           83           107          81
 Jan-Jul                                                               78           77           77           102          79
 Oct-Sep                                                               79           79           76           103          81
                                                                                                                        
                                                                                                                        
 U.S. weekly power generation percent by fuel - EIA                                                                               
                                                                   Week ended   Week ended   Week ended   Week ended   Week ended
                                                                     Jan 5        Dec 29       Dec 22       Dec 15        Dec 8
 Wind                                                                  9            11           11           11           12
 Solar                                                                 3             2            2            3            3
 Hydro                                                                 6             7            6            6            5
 Other                                                                 2             2            2            2            2
 Petroleum                                                             0             0            0            0            0
 Natural Gas                                                           40           40           41           41           40
 Coal                                                                  18           16           18           17           17
 Nuclear                                                               21           22           20           20           21
                                                                                                                             
 SNL U.S. Natural Gas Next-Day Prices ($ per mmBtu)                                                                          
 Hub                                                              Current Day    Prior Day                                   
 Henry Hub                                                   2.55         2.58                                       
 Transco Z6 New York                                        2.35         2.15                                       
 PG&E Citygate                                             3.81         3.55                                       
 Eastern Gas (old Dominion South)                         1.92         1.82                                       
 Chicago Citygate                                           2.40         2.13                                       
 Algonquin Citygate                                         2.72         3.10                                       
 SoCal Citygate                                           3.61         2.97                                       
 Waha Hub                                                 1.99         1.60                                       
 AECO                                                     1.31         1.60                                       
                                                                                                                                  
 SNL U.S. Power Next-Day Prices ($ per megawatt-hour)                                                                             
 Hub                                                              Current Day    Prior Day                                        
 New England                                             41.50        31.75                                       
 PJM West                                                36.25        24.25                                       
 Ercot North                                             25.75        19.50                                       
 Mid C                                                   72.00        70.00                                       
 Palo Verde                                              44.25        33.00                                       
 SP-15                                                   45.00        43.00                                       
 
 (Reporting by Scott DiSavino; Editing by Jan Harvey)