Pittsburgh's morning fog prompted a Dense Fog Advisory; clear weather is expected later with a dry Fourth of July weekend ...

Professional pyrotechnicians and event planners have to consider a variety of factors when putting on fireworks displays. One ...

San Francisco forecast includes possible dry thunderstorms and prevailing marine layer with normal temperatures and a cooling ...

The smallest firework shells explode around 120 metres up, while the largest detonate around 350 metres above the ...