Weather Underground Forecast for Thursday, October 11, 2012.
Active weather persists across the Great Lakes, as well as the Southwest on Thursday. A low pressure system spinning in eastern Canada advances northward and further away from the Northeastern U.S. However, another trough of low pressure slides over the Upper Midwest and into the Great Lakes on Thursday, kicking up more rain showers across the Midwest and Great Lakes. Some areas in the north may see some scattered snow showers, but heavy snowfall is not anticipated. Chilly Fall temperatures will persist across the Great Lakes and Upper Midwest, but the rest of the East will start to warm up as high pressure builds over the Southeast and pushes warmer air in from the south. High temperatures will remain in the 50s for the Upper Midwest, but the Eastern Valleys will see highs in the upper 60s to mid-70s on Thursday.
Meanwhile out West, a low pressure system spinning off the coast of California will continue moving eastward and further onshore. Flow around this system will pull moisture in from the Pacific Ocean, maintaining cooler temperatures across the state with scattered showers likely in southern California. Moisture from this system will increase chances of thunderstorms from southern California through Nevada and Arizona. To the north, a ridge of high pressure remains the dominant weather feature for the Pacific Northwest. This will keep moisture away from the region, maintaining dry and pleasant conditions.
Temperatures in the Lower 48 states Wednesday have ranged from a morning low of 14 degrees at West Yellowstone, Mont. to a high of 95 degrees at Edinburg, Texas