Trading in Weyerhaeuser stock is up after the latest quarterly report, with the Federal Way-based timber giant announcing its highest quarterly earnings since 2006, excluding land sales. In the first-quarter report released this morning, the company reports net earnings of $183 million, compared to $144 million in net earnings during the same quarter last year. President and CEO Doyle Simmons says that this is a particularly impressive report, delivering strong operating results despite unusually severe winter weather. Simmons says that the Timberlands business is realizing increasing benefits from the Longview Timber acquisition, and he says that they plan to continue with this strong performance into the future. Company officials say that they expect the strong Timberlands performance to continue in the next quarter, along with significantly higher earnings in the Wood Products sector. They’re also looking at significantly higher earnings in Cellulose Fibers and strong performance in Homebuilding, as well.