It’s the rally you probably haven’t heard about.

The price of natural gas has spiked to its highest level since 2011, advancing 17 percent year-to-date, as supplies declined for 14 consecutive weeks.

(Read More: Energy Boom Ripples Through US Economy)

The month of March, which typically brings rising daily temperatures going into the spring season, can be characterized as colder than average. This cold weather has increased demand for natural gas, prompting prices to surpass the psychologically critical $4.0 level.

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