Urgent Travel News today 15th April 2010

The move effectively grounded all flights in Britain from 11:00 a.m. Greenwich Mean Time (7:00 a.m. Eastern) and affected an estimated 6,000 flights that use British airspace every day, aviation experts said. Oddly, for travelers, the closure was announced under clear blue skies. Experts had said earlier that the ash may not be visible from the ground but can clog airplane engines.