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Project Status: 1 March 2007 (Thursday)

Some isolated showers still remain over the American River Basin. Only about 0.1 to 0.2 inches of liquid has fallen since the end of IOP-7 yesterday afternoon at 00 UTC. The showers will shut down later tonight as a ridge builds in to the area for the next couple days. Our next chance of significant precipitation appears to be early next week. A wet and warm storm is forecast to hit the west coast late Monday into Tuesday. This scenario could pose serious hydrologic concerns given all of the snow that has recently fallen, especially the snow at mid-slope levels (3000-5000 feet). The question is exactly where the storm will hit along the coast. Over the last few forecast cycles, model guidance has been pushing the brunt of the storm into extreme northern California and southern Oregon. Given the potential significance of the storm, attempts will be made to engage the Winter Storms Recon program to perform targeted observations in the Pacific that will provide better initialization information for the models

On the coordination call tomorrow (Friday), we will have an extended discussion about IOP-7. A summary of IOP-7 has been posted to the Operation Summary blog.



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