据油价网6月28日消息：美国天然气价格上周和周一早盘飙升，原因是天然气市场吃紧，以及美国许多地区在比往常更热的天气下预计电力需求旺盛。

　　截至美国东部时间周一上午8:19，亨利中心的美国天然气基准价格超过3.50美元/百万英热，达到3.549美元，上涨1.52%。这是29个月来即期期货的最高价格。

　　美国能源情报署(EIA)周四公布，截至6月18日当周，美国能源储备净注入量为550亿立方英尺，低于分析师的预期。估计中值为620亿立方英尺。低于预期的天然气库存表明市场趋紧，因为太平洋西北部正处于热浪中，预计美国许多地区的高温将持续到7月。

　　EIA周四表示，尽管在热浪中电力需求激增，截至6月18日，美国的天然气库存总量为2482亿立方英尺，较上年同期下降17%，较本周的五年平均水平下降6%。

　　去年同期，天然气储备净注入量为1150亿立方英尺，是截至6月18日一周的两倍多。EIA估计，在4月至10月的补充季节，注入储存库的平均速度比5年来的平均速度低15%。

　　NatGasWeather.com的数据显示，在这种供不应求的市场环境下，预计需求将至少持续到7月1日。太平洋西北部的酷热天气和西部进入得克萨斯州的高温高压使得周末的气温达到90到110华氏度，西雅图和波特兰的高温也打破了历史纪录。

　　冯娟 摘译自 油价网

　　原文如下：

　　U.S. Natural Gas Prices Jump To 29-Month High On Extreme Weather

　　U.S. natural gas prices jumped last week and early on Monday amid a tight natural gas market and expectations of high demand for electricity in hotter than usual weather in many parts of the United States.

　　As of 8:19 a.m. EDT on Monday, the U.S. benchmark natural gas price at the Henry Hub was trading at above $3.50 per million British thermal units (MMBtu)—at $3.549, up by 1.52 percent. This was the highest price for the prompt futures in 29 months.

　　On Thursday last week, the Energy Information Administration (EIA) reported net injections into storage of 55 billion cubic feet (Bcf) for the week ending June 18, lower than analysts had expected. The median estimate was 62 Bcf injection into storage of natural gas stocks. The lower-than-expected stockpiles of natural gas signaled a tighter market just as the Pacific Northwest is scorching in a heatwave and high temperatures are expected to continue into July in many parts of the U.S.

　　While power demand is surging in the heat waves, working natural gas stocks totaled 2,482 Bcf in the United States as of June 18, which is 17 percent lower than the year-ago level and 6 percent lower than the five-year average for this week, the EIA said on Thursday.

　　During the same week last year, net injections into gas storage were more than double – 115 Bcf – the injection for the week to June 18. The average rate of injections into storage is 15 percent lower than the five-year average so far in the refill season, April through October, the EIA has estimated.

　　Amid this tight market, demand is expected to stay high at least until July 1, according to NatGasWeather.com. Very hot weather in the Pacific Northwest and hot high pressure in the West into Texas sent temperatures in the high 90s to the 110s in the weekend, including all-time record-breaking heat in Seattle and Portland.

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