US natural gas futures give back 9% surge from pipeline leak as market expects brief disruption

New York Mercantile Exchange — U.S. natural gas futures turned lower on Friday, giving back a portion of the sharp gains recorded in the previous session, after a pipeline leak in West Virginia temporarily disrupted supply.

Price Movement

The front-month natural gas futures contract for October delivery on the New York Mercantile Exchange fell 5.5% to $3.115 per million British thermal units (MMBtu) on Friday. This followed a 9% surge on Thursday, which marked the highest closing level since June 25.

Pipeline Leak Triggers Force Majeure

The price volatility was triggered by an incident on TC Energy's (TRP.US) Columbia Gas Transmission pipeline in West Virginia. The leak led to a force majeure declaration and forced a reduction in capacity on the Mountaineer Xpress pipeline.

Key details:

• The pipeline's firm transportation service capacity was reduced by 1.8 billion cubic feet per day
• The disruption affected up to 1.5% of total natural gas supply across the lower 48 U.S. states
• The incident drove natural gas prices sharply higher on Thursday

Supply Context and Market Dynamics

The pipeline disruption occurred against a backdrop of already tightening U.S. natural gas supply. In recent weeks, producers in the Appalachian region had begun reducing output as the traditional autumn demand lull approaches. The pipeline outage further tightened short-term supply.

However, according to Ritterbusch & Associates, the disruption is expected to be short-lived, which helped ease supply concerns and contributed to Friday's price decline.

The firm also noted that Thursday's sharp price reaction may have been amplified by market positioning:

• The market had accumulated a significant volume of speculative short positions
• Some traders had grown less vigilant about supply risks due to ample inventory buffers throughout the summer
• Short-covering likely magnified the price surge

This suggests that Thursday's 9% gain may not fully reflect actual supply losses, but was also driven by position adjustments.

European Natural Gas Market

Across the Atlantic, European natural gas prices have followed a weaker trajectory, with prices expected to decline more than 5% this week. This is attributed to:

• Diplomatic efforts to end the conflict in the Middle East
• Seasonally mild temperatures delaying heating demand

However, the supply base in Europe remains relatively fragile:

• EU natural gas storage facilities are only about 70% full
• Any new supply disruption could trigger a rapid price response

ANZ Bank analysts noted that liquefied natural gas (LNG) has lower transport flexibility compared to crude oil, as it relies on specialized vessels and is more vulnerable to security risks. This means European gas supply faces ongoing risks amid geopolitical uncertainty.

Additionally, maintenance at Norwegian gas facilities has reduced pipeline flows to Europe in recent days, further tightening the market.

Outlook

The U.S. and European natural gas markets are currently driven by different short-term factors:

• U.S. market: Prices have retreated after the pipeline-induced supply shock, as the disruption is expected to be brief
• European market: Prices are weakening due to mild weather and easing geopolitical tensions, but low storage levels, reduced Norwegian supply, and LNG transport constraints mean the market remains highly sensitive to any new supply disruptions