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[July 28, 2010] (AP) Wet weather was forecast to continue sweeping through the Midwest on Wednesday, while scattered storms would persist in the Southeast.

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A low pressure system moving eastward through Canada would create a cold front that would extend into the U.S. and push through the upper Mississippi River into the Great Lakes. This system was expected to kick up scattered showers and thunderstorms and has a history of producing large hail and wind gusts up to 60 mph. Forecasters said storms may turn severe again with heavy rainfall producing between a half-inch and an inch of rain, with up to two inches in areas of thunderstorm development. The strongest storms were anticipated over Michigan and would move into the Ohio River Valley by evening. Scattered storms would also persist over the central Plains as the tail end of the system lingered over the region.

In the South, high pressure spinning in the Gulf of Mexico would continue pushing abundant moisture onshore due to its clockwise rotation. The front to the north would help trap moisture over the southeastern U.S., allowing for more scattered showers and thunderstorms to develop throughout the day. Storms may turn severe with strong and damaging winds as well as downpours producing 2 to 3 inches of rain.

Hot and humid conditions would persist over most of the Eastern half of the country, with highs in the 90s and heat indexes well over 100 degrees.

Meanwhile in the West, a dominant ridge of high pressure would allow for moist air to continue flowing in from the Southeast. This would bring more monsoonal moisture over the region and bring more high-level scattered showers and thunderstorms to Arizona and New Mexico.

Temperatures in the Lower 48 states Tuesday ranged from a low of 38 degrees at Charleston, Nev., to a high of 119 degrees at Death Valley, Calif.

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[Associated Press article from Weather Underground]