Atlantic hurricane season can cause power outages and high gas prices for consumers and the year is off early with Tropical Storm Arlene, forecasters note. Arlene was only the second such tropical storm observed in April in the Atlantic Ocean. Forecasters for the U.S. National Hurricane Center said Friday that detecting a storm as weak as Arlene was “practically impossible” before the modern weather-satellite era. Genscape, which provides energy market data, said power plants may be affected differently as the season moves closer to its official start. “As production continues to shift to inland regions and hurricane activity in the Gulf remains below average, Genscape is seeing the impact from hurricanes shift from production-destruction to impacting demand through shifts in temperatures,” it said in a commentary on Arlene. Hurricane Matthew was a Category 3 storm when it hit the east coast of Florida in early October. The U.S. Energy Information Administration estimated about 2.5 million residential, commercial, and industrial electricity customers lost power across five states because of Matthew. Motor club AAA reported that Matthew forced the closure of fuel terminals in Florida, Georgia and South Carolina. Most of the coastal ports reopened in the region by the time remnants of Matthew moved out to sea, however the storm caused short-term gasoline shortages and skewed the national average price at the pump higher.