Warren works out of his studio in Historic North Fargo, ND.
2009- Califronia Watercolor Society, 40th Annual Watercolor Exhibition, San Francisco CA
2008- Gold Medal, Red River Watercolor Society, 15th Annual Watermedia Exhibition, Fargo ND
2007- Jack Richeson & Company Inc. Award, Red River Watercolor Society, 14th annual Watermedia Exhibition, Fargo ND
2006- Philidelphia Watercolor Society, 106th Annual National Exhibition, Bethlahem PA
2006- Honorable Mention, Rhode Island Watercolor Society, 13th Annual National Exhibition, Pawtucket RI
2006- National Watercolor Society, 86th Annual National Exhibition, Fullerton CA
2006- NWS Signature Status, National Watercolor Society, San Pedro CA
2006- Dwight Sutherland Award, Missouri Watercolor Society, 6th Annual National Exhibition, Fullerton MO
2005- Art on the Plains 8, Plains Art Museum, Fargo ND
2003- Gold Medal, Red River Watercolor Society, 10th annual National Watermedia Exhibition, Fargo ND