Never stand under a tree during a thunderstorm. Photo by Photos.com.
A rough Labor Day is in store for a few spots across the South as tropical air left behind from Isaac bubbles into powerful thunderstorms.
Residents of the northern Plains are not out of the woods either as a strong cold front pushes through the area, sparking several rounds of dangerous storms.
Cities caught in the crosshairs include Hastings, Grand Island, Lincoln, Omaha, Des Moines and Cedar Rapids in the northern Plains.
In the South, cities most at risk include Tuscaloosa, Birmingham, Montgomery and Atlanta.
Damaging blasts of wind, hail larger than the size of quarters and blinding, travel-disrupting downpours are likely in these areas.
Similar storms took place on Sunday across northern Mississippi and Alabama. Thousands lost power as trees were blown down, and a house was even set on fire by lightning.

If you'll be out and about this Labor Day, you'll want to pay close attention to changing skies. Thunderstorms will move quickly and once you can hear thunder, lightning can strike at any time.
Be sure to heed all watches and warnings, and keep in mind a watch means the potential for a severe storm is there. A warning means it will happen.
For the latest information, please check back at AccuWeather.com often.
A tornado touched down at about 2:53 p.m. CDT Monday in Moore, between Norman and Oklahoma City.
Several tornadoes touched down from Oklahoma to Iowa, including near Wichita, Kan., and Oklahoma City, on Sunday.
Slow-moving showers and storms will bring heavy rain and flooding potential.
Reports from Monday's severe weather.
Rising temperatures and humidity across the mid-Atlantic will have it feeling like the end of June.
Heavy rain returning to the northern Plains will generate a renewed flood threat for the Red River.
| Extreme | Location | |
|---|---|---|
| High | N/A | |
| Low | N/A | |
| Precip | N/A |
Ohio Valley (1860)
Tornado swarm in Ohio Valley hit Louisville,
KY, Cincinnati, OH, Chilicothe, OH, and
Marietta, OH. Damage totalled $1 million;
4 people killed in Cincinnati.
Orlando, Fl (2005)
High temperature finally reached 90
degrees. This gets a record for the
latest occurrence of the first degrees
day of the year.
Kansas City, KS (1957)
Forty-five people killed and millions of dollars
in damage by tornadoes.
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