A storm rolls into Bagram Air Field, Afghanistan, April 20. The 455th Expeditionary Operations Support Squadron, combat weather team, uses a variety of techniques to predict weather. They use of a Mark IV satellite and visual reference to determine type and severity of storm to better prepare personnel on BAF to maintain mission effectiveness. Rainstorms are frequent this time of year and have the ability to change the landscape to include rivers and streams. With the lack of drainage systems, floods occur regularly throughout the southeast region of Afghanistan. Precipitation in east and southeast regions is about forty centimeters per year.