Latest rainfall accumulation forecast from the GFS and Euro (courtesy weatherbell.com)
All operational forecast models keep Hurricane Joaquin far enough out to sea to prevent a direct strike on the DC Area. Steady rain will fall moderately at times Friday midday through the evening hours. We may even see some breaks in the clouds Saturday evening. Sunday may turn out as a decent day giving us a chance to dry out. The risk of widespread flooding has diminished substantially. Heavy rain may cause areas of flooding in poor drainage areas but the models have really shunted the historic rainfall across the Carolinas.
Bottom Line: One to three inches of rain should fall across the Washington Area through Friday evening before the rain tapers off to scattered drizzle or scattered showers on Saturday.