It's been a banner week for natural gas. Hitting $6.40 per million BTUs on Thursday, the commodity has risen more than 30 percent in eight trading sessions, up to a five-year high. But expert energy trader Rob Raymond says we may not have seen the top just yet.
"With sustained cold, you could see $7 or $8," said Raymond, the founder and principal of RCH Energy, on Thursday's episode of "Futures Now." "This is about rationing demand. Because basically, you're running out of molecules, and at some point, if the supply side can't react in a 15-to-30-day period, you've got to bid it up to cause people to consume less of it."
Natural gas tends to rise in the winter and the summer, because it is used for both heating and cooling. The problem is that logistical difficulties make it difficult for the market to adjust to highly unusual weather.
"We had the coldest winter in 100 years this year and had the warmest winter in 50 years in 2012," Raymond wrote to CNBC.com. "The system isn't designed to handle these sort of multiple standard deviation events from an inventory management standpoint, as there isn't enough storage capacity in the ground. This translates into lots of volatility in the short term."
New developments have made the problem even worse.
"Further exacerbating the issue is that we have moved 20 percent of US daily supply to a very cold part of the country in the winter, the northeast. So when it gets really cold, the supply side is now affected due to well freeze-offs," Raymond wrote.
(Read more: Low on natural gas, California told to power down)