Tourists are advised to monitor media reports and check with their tour operator before travelling to southern California as wildfires continue to rage through the region.
President George Bush declared a state of emergency as fires blazed through 424sqmiles. About 300,000 people have been told to leave San Diego county, where hundreds of homes have been destroyed.
One person is thought to have been killed and dozens injured.
The area of evacuation spans from San Diego to Malibu. Although the Foreign Office has not issued a formal warning, a spokesperson from the American Embassy said holidaymakers should consult calfires.com and their tour operator before travel.