Scientists have found that internal variability can make one season twice as active as another, even when large-scale hurricane-shaping elements are unchanged. The research suggests that seasonal hurricane forecasts could be improved by conveying the amount of unavoidable uncertainty in the outlook.

Researchers at NCAR and partner organizations this summer are using aircraft, ground-based sensors, computer models, and other tools to track the origins of summertime ozone, a significant health threat.

More than 1,000 forecasters, researchers, and other professionals from around the globe will convene in Montréal on August 16–21 for a first-of-a-kind meeting aimed at pooling international thought on where weather prediction is headed. NCAR and UCAR participants are on tap to cover a wide range of promising developments.

Warmer temperatures, higher humidity, and less rain help lead to an earlier Lyme disease season, researchers have found. They have also identified several weather variables that can be used to predict the onset and peak of the next seasons.