South Carolinians heading to voting booths for today's presidential primary will have to keep an eye to the sky with locally strong thunderstorms a threat.
Showers and thunderstorms accompanied voters to polling places throughout central and upstate South Carolina this morning.
More showers and thunderstorms will develop across the state into this evening with the arrival of the Northeast snowstorm's cold front.
The potential exists for a few of the thunderstorms to turn violent with damaging winds and hail. A tornado or two could also touch down.
A greater number of the thunderstorms will unleash downpours, posing a danger to those driving to cast their vote. Visibility will dramatically drop and the risk of vehicles hydroplaning will increase in these downpours.
Anyone standing outside of or walking to polling places should seek shelter at the first clasp of thunder. If thunder is heard, you are close enough to get struck by potentially deadly lightning.
The threat of locally strong thunderstorms is not confined to South Carolina today, but also extends southwestward to southern Mississippi.
Some of the warmest weather of the year will continue across Alaska over the next few days, challenging more records.
Join us on Thursday for AccuWeather LIVE, we will discuss the debate of climate change and hurricane frequency and the top five things you need to know about summer weather.
Warmth is forecast to build over much of the eastern half of the nation by July, with Alaska of all places helping out.
A brief synopsis of the top five worst weather events of last summer.
The storms could affect cities from St. Louis to Evansville, Ind., Louisville, Ky., Cincinnati and Dayton, Ohio to Huntington, W.Va.
A tornado touched down at Denver International Airport as a severe weather system moved through the area.
Custer Creek, MT (1938)
Cloudburst; 48 killed in a train wreck.
A violent tornado started west of the Hudson River, then travelled on to Poughkeepsie, Waterbury, North Haven, Milford, and Branford line into Long Island Sound. Extensive damage; funnel looked like an "aurora borealis." At New Milford, 28 buildings were destroyed or damaged. A barn door was carried 9 miles from its original site.
Philadelphia, PA (1990)
Hail up to the size of marbles fell with wind gusts to 50 mph in the northeast part of the city.