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Weather Underground Forecast for Thursday, September 13, 2012.

Unsettled weather conditions in the Four Corners will become focused over Colorado, New Mexico and western Texas on Thursday as moisture shifts to the southeast and the tail of a cold front drops southward through the Southern Plains and Southern High Plains. This setup will translate into showers, periods of heavy rainfall and embedded thunderstorms through the morning and afternoon especially in the southern Sangre de Cristo Mountains. Locally heavy rainfall through the day is expected to increase flood concerns over recent burn scar areas. In addition to rain, 1 to 2 inches of snowfall will be possible at elevations above 12,000 feet in the southern Sangre de Cristo mountains through the afternoon. Precipitation in these areas are expected to taper down through the evening as the cold front pushes eastward. As this front exits, freezing conditions will become possible Thursday night as overnight lows in the region may drop into the upper 20s.

Meanwhile, showers and thunderstorms will continue across the Central Plains through the Upper Great Lakes as the northern half of the aforementioned cold front pushes eastward through Midwest. Expect cooler daytime highs with the passing of this cold front. Temperatures from parts of the Upper Great Lakes though the Southern Plains are expected to only reach into the 50s and 60s.

To the east, high pressure remained the dominant weather feature of the rest of the East with generally quiet weather conditions. Breezy winds associated with this system ushered moisture across the Florida Peninsula and the Gulf Coast, triggering chances of showers through the day. Temperatures in the Lower 48 states Wednesday have ranged from a morning low of 17 degrees at West Yellowstone, Mont. to a high of 100 degrees at Alice, Texas