Severe thunderstorm and dust warnings were issued by the National Weather Service in Tucson on Wednesday, Aug. 20.

"The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or ...

"The storm which prompted the warning has weakened below severe limits, and no longer poses an immediate threat to life or ...

BP's 440,000-bpd refinery in Whiting, Indiana, continued to burn materials in the flares after flooding disrupted its operations earlier this week, the company said.