Weather Underground Forecast for Monday, September 05, 2011. Stormy weather will continue across the Southeast and Tennessee Valley Monday as Lee moves northeastward through southern Mississippi as a tropical depression. Lee will gradually weaken as it moves further inland through the day with maximum sustained winds near 35 mph and gusts between 46 to 52 mph. Bands of heavy rainfall associated with this system will provide a good soaking to areas of the Southeast and the Tennessee Valley. Total rainfall accumulations from Lee are expected to reach up to 20 inches, from the Central Gulf Coast into the Tennessee Valley through Monday night. Thus, expect flooding and flash flooding to remain major concerns throughout these regions. In addition to significant rain and wind, severe storms with brief, isolated tornadoes will be possible along the Central Gulf Coast, primarily in southern Alabama, the Florida Panhandle, and southwestern Georgia.
Meanwhile, tropical moisture from Lee will interact with a strong cold front moving through the eastern third of the nation. This setup will kick up rain and thunderstorms from parts of the Northeast through the Mid-Atlantic and the Eastern Valleys. More rain in the Northeast and parts of the Mid-Atlantic will raise flood concerns, especially in areas recently hit by Hurricane Irene. New rain will also cause flood concerns for the dry to severe drought areas of the central and southern Appalachians.
Elsewhere, calm weather will continue throughout much of the West. Monsoon moisture may spark scattered showers and higher terrain thunderstorms in the Southwest. Temperatures in the Lower 48 states Sunday have ranged from a morning low of 23 degrees at West Yellowstone, Mont. to a high of 109 degrees at Thermal, Calif.