A psychology reversal may be occurring in the oil market - a shift in sentiment that may be good news for U.S. consumers. That was how one trader characterized oil's $3.41 fall to $118.00 per barrel Tuesday in premarket trading.

Tuesday's early morning negative catalyst was a report that Tropical Storm Edouard will leave U.S oil rigs and refineries without significant damage, but energy trader Jim Dietz said bearish sentiment has been on the rise for about 10 days.

Beginning of psychology reversal?

"Tropical storm or not, a psychology reversal is starting to occur in the oil market. There's a real concern now that a global economic slowdown is occurring and it will be reflected in oil demand figures for August and September," Dietz said. "We've had two days of a storm in the Gulf of Mexico and negative rhetoric from Iran and oil rallies couldn't hold. That's a sign of a bearish market."

Dietz said he is presently flat, or has no open energy trading positions, but added "that may change later today if the bearish trend persists."