Colorado State University trimmed its hurricane prediction from six to five, and the number of named storms from 12 to 11.
The team at Colorado State is headed by William Gray, who pioneered the field of storm season forecasts.
The National Oceanic and Atmospheric Administration said late last month that the 2009 Atlantic hurricane season, which began June 1, should be near-normal, with a good chance of four to seven hurricanes. One to three of those storms could be major, NOAA said.
Predicting hurricanes is tricky, however. In 1989, Gray forecast a relatively mild hurricane season. That year, seven hurricanes and four tropical storms killed 84 people in the U.S. In 2005, Gray's team forecast eight hurricanes. There were 15 hurricanes, including Katrina and Rita.
The two seasons after Katrina were mild, despite forecasts for more violent weather.
Last year, hurricanes Gustav and Ike — both category four storms — destroyed 60 oil and gas platforms in the Gulf of Mexico and disrupted fuel supplies to much of the Southeast. The damage to major utilities from Texas to New England was severe, however, knocking out power to millions.
Utilities spent billions cleaning up.
This year, even if a hurricane knocked out refineries along the northern Texas coast, which account for about 20 percent of U.S. gas production, refineries in Louisiana and elsewhere would likely pick up the slack.
That is not to say prices would not rise in anticipation of a storm. The price of crude has jumped nearly $20 over the past month and has passed $69 per barrel for the first time since early November.
Energy markets can trade on anticipation of a direct hit, and prices can rise even before a storm enters the Gulf.