Summer, with its often-violent storms, does not always mix well with business travel. But the wildfires in the West and high-security events like the London Olympics and two political conventions are making this summer particularly challenging.

For those headed west, for example, the wildfires that forced hotel evacuations and closings in Colorado in June were the beginning of a record-setting fire season that has now moved into Oklahoma and Arizona. It is expected to continue into October and November in California. Last Thursday, the National Oceanic and Atmospheric Administration raised its prediction of hurricanes this season. With six named storms already, two before the official start of the season on June 1, the forecast is now for five to eight storms with top winds of 74 miles an hour or higher and two to three storms that could become major hurricanes with winds of at least 111 m.p.h. or more.