Complex sentence: The U.S. Department of Agriculture reported that the late-December freeze cost the California citrus industry $6,000,000 ($today), but that the department's frost warning prevented an additional $14,000,000 ($today) in damages.
Split into simpler sentences: The U.S. Department of Agriculture reported that the late-December freeze cost the California citrus industry $6,000,000 ($today). The department also claimed that its frost warnings prevented an additional $14,000,000 ($today) in damages.