A storm system that brought flash floods to parts of Texas Saturday and the Deep South Sunday will affect areas of the Southeast into Monday night.
The storm system will bring a risk of isolated severe weather from Tennessee and northern Alabama to Georgia and the Florida Panhandle Monday evening.
Into Monday, the storm center will track into and through the Tennessee Valley. Much of Mississippi, Alabama and Tennessee is subject to picking up 1 to 3 inches of rain during this time with locally higher amounts.
With rainfall running above normal in this area over the last month, there will be some potential for flash flooding. Urban flooding can occur anywhere due to the intensity of some of the downpours.
Meanwhile, a trailing cold front will cause a few instances of wind damage, hail and perhaps an isolated tornado or two farther south near the Gulf Coast from the Florida Panhandle north through Georgia, part of Alabama and Tennessee.
Through Tuesday, the storm will slowly pull north and the trailing cool front will reach Virginia and the Carolinas. While the threat for excessive rainfall will diminish, the potential for a few strong thunderstorms will still exist over the eastern Carolinas and the Tidewater area of Virginia.
There is a risk of damaging thunderstorms over the eastern Ohio Valley Tuesday.
Showers will push into the Northeast later Tuesday into Tuesday night. However, the threat for heavy rainfall will be diminishing as the storm will begin to weaken and pull away from the rich moisture supply from the Gulf of Mexico.
At midweek, the weakening storm will track through the Great Lakes.
Tuesday into Wednesday will bring a chance for wet weather in the I-95 corridor from Philadelphia to Boston.
The storm's weakening trend is fortunate, since most of the Northeast has seen above-normal rainfall during September and any excessive rain would cause flooding. However, there is the potential for locally severe thunderstorms over part of the Ohio Valley Tuesday.
The storm will exit into Canada on Thursday, but showers may still linger over parts of New England.
Rainfall totals were as high as 10.72 inches in Nacogdoches, Texas, over the weekend, with 5.84 inches in Monroe, La. A large part of the area between the Mississippi River and the Rockies has received at least 2 inches of rainfall through the weekend.
There were a few reports of damaging winds and two tornadoes touched down in Texas as well.
Showers and thunderstorms will return to the Southwest late this week and could reach part of California.
The late-season swelter will continue along much of the Atlantic Seaboard through the week as tens of millions head back to school and work.
An area of low pressure will bring a threat of heavy rain and flooding to parts of southern Europe through the middle of the week.
Life-threatening flash flooding and mudslides will occur across northeastern Mexico as Dolly moves ashore.
Following a warm, humid start for the first days of September, lower humidity and more pleasant conditions will return to the Pittsburgh area.
A cold front swinging into the Northeast will bring the threat of severe weather to part of the region on Tuesday afternoon.
Matecumbe Key, FL (1935)
Labor Day Hurricane hit Florida. Pressure at Matecumbe Key dipped to 26.35"/892.3 mb. Most intense hurricane ever to hit the U.S. with 200-mph wind. Tide of 15 feet; 408 dead.
Mecca, CA (1950)
126 degrees - highest ever for U.S. in Sept.
East Coast (1775)