Wildfires continue to scorch the state of California forcing half a million people to evacuate. Officials and exhausted firefighters hope for a break in the hot Santa Ana winds that are whipping the flames. Relentless wildfires forcing the largest evacuations in California's modern history raged into a fourth day on Wednesday (October 24) as 10,000 exhausted firefighters hoped for a break in the hot winds whipping the flames. With half a million people driven from their homes, 1,000 houses already lost and some 470 square miles (1,220 sq km) scorched across the southern half of the state, Gov. Arnold Schwarzenegger's government has put economic losses in the hundreds of millions of dollars. "What we see now that we did not see during Hurricane Katrina is a very good team effort from the local, the state and the Federal government and across the Federal agencies working here as partners and that's what we've changed in this organization," said FEMA Director David Paulison. "That's how we're going to get these fires under control and people back in their homes as quickly as we can." Weather forecasters say fierce Santa Ana winds blowing in from the desert should begin to subside by Wednesday afternoon. A drop in the winds, which can howl at gale forces through Southern California's mountain passes and canyons, would also allow for lower temperatures and higher humidity, which could prove crucial in fighting more than a dozen wildfires still burning out of control. In the San Diego area in the south, firefighters were struggling with four major fires that have forced 500,000 people into the largest evacuation in the state's recorded history. "The mountain behind me was, it look like it erupted like a volcano. You could see the flames, smoke. It was pretty think so I left," said one unidentified man who had taken refuge at San Diego's Qualcomm stadium. Most of the destroyed homes were in the San Diego area, where one person was killed on Sunday. Four other deaths were reported among the evacuees and more than three dozen people have been injured, including 18 firefighters. Fires also burned on the outskirts of the Mexican city of Tijuana, 20 miles (32 km) from San Diego. Schwarzenegger asked President George W. Bush to upgrade California's wildfires to a "major disaster," which would trigger federal help. Bush had issued a declaration of emergency on Tuesday and plans to visit the fire-stricken area on Thursday. But in a new letter, Schwarzenegger told Bush "this disaster is of such severity and magnitude that effective response is beyond the capability of the state and local governments." Schwarzenegger said 68,000 homes, from cabins to luxury villas, were threatened across the state and that 10,000 men and women were working the fire lines against flames shooting as high as 100 feet (30 metres). There were some signs of progress as crews largely contained a fire in the hills above the seaside enclave of Malibu, allowing residents to return. Some San Diego evacuees were allowed back to their neighborhoods late on Tuesday. Those taking shelter at the stadium, including senior citizens from nursing homes, called it well organized and clean -- in contrast to the chaos at the Superdome in New Orleans, a refuge for thousands of people after Hurricane Katrina hit the Gulf Coast in 2005. Paul Fiest, a spokesman for California's Office of Emergency Services, said the state had not seen such a large evacuation at least since 1917, the earliest date that records were kept.