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Our wet weather could get wetter

The wet weather trend across the Charlotte region is about to get wetter.

A tropical low pressure system forming south of Florida and a cold front moving eastward from the Mississippi Valley are expected to bring an increased threat of showers and thunderstorms to the area later this week.

The good news: While the weekend won’t be 100 percent dry, the thunderstorm chances will decrease.

A cluster of showers, some of them heavy, formed overnight near Rock Hill and pushed northward across western Mecklenburg and eastern Gaston counties, and then over parts of Lincoln, Iredell and Cabarrus counties around daybreak. Radar estimates showed some areas received more than 1 inch of rain from the showers, especially in the Concord-Kannapolis area.

Meteorologists say they expect a mix of clouds and sunshine today, with high temperatures climbing into the low and middle 80s. By afternoon, a few showers and thunderstorms are predicted to develop across the region.

Conditions will change Thursday.

The tropical low near Florida is forecast to move up the East Coast over the next several days. Some of the computer models show the low pressure system moving inland across the Carolinas, which would bring heavy rain to the Charlotte region Thursday and Friday.

But National Weather Service meteorologist Justin Lane said Wednesday morning that the latest trend from the computers has been to keep the low’s track along the coast.

“That would keep the threat of widespread heavy rain and flooding to the east of the Charlotte area,” Lane said.

Areas along and east of U.S. 1 would be at greatest risk of widespread flooding rain.

However, Lane said, there will be enough tropical moisture spreading into the Charlotte region for numerous showers and thunderstorms to develop from Thursday through Friday evening. In other words, both days could be washouts.

“There will be at least a localized flash flood threat,” Lane said.

The situation would be similar to that of Sunday night and early Monday, when parts of the Charlotte area received between 2 and 4 inches of rain.

If the tropical low moves farther inland, forecasters say, the heavy rain threat will increase for the Charlotte region.

By Saturday, low pressure is expected to be well northeast of the Carolinas. In addition, a cold front that could bring heavy storms to the mountains Friday also will be east of Charlotte. That means the thunderstorm threat will lessen Saturday and Sunday for Charlotte.

Temperatures are expected to rebound back into the upper 80s by the weekend, with only a few scattered afternoon and evening storms.

Steve Lyttle: 704-358-6107.
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