SEATTLE (Reuters) - With snowpacks at a quarter of normal levels and sunny, warm days well ahead of the summer months, the home state of the "rainy city" of Seattle declared a drought emergency on Thursday. Washington state Gov. Christine Gregoire authorized the statewide drought emergency, the first since 2001, after unusually low winter snowfalls in the Cascades left rivers on both sides of the mountain range flowing at record-low levels. Gregoire said in a statement it was "very likely that all areas of our state will experience at least some level of drought this year." She also told the...