The National Weather Service failed to issue a tornado warning in Moore, Oklahoma, when a preliminary EF-1 tornado made a mess of the town for the sixth time in as many years on Wednesday. AccuWeather wasted no time blasting the agency for its failure while trumpeting their own success in warning clients twelve minutes before the storm struck. There's only one problem—their brand new television network didn't cover the storm, either.

Moore, Oklahoma, a city of more than 50,000 people that lies a few miles south of Oklahoma City, suffered a direct hit from its sixth tornado in the past fifteen years tonight. Numerous structures were significantly damaged by the tornado, including Southgate Elementary school.

Today is the second day of a two-part severe weather outbreak across the Plains states, with giant thunderstorms blowing up over Oklahoma and Arkansas. The storms have the potential to produce hail up to the size of tennis balls, so naturally, storm chasers are speeding towards them in hopes of catching nature at its fiercest.

Oklahoma City is one of the most threatened cities in the United States when it comes to severe weather. At least once a year—often more than that—nature throws violent tornadoes, enormous hail, and destructive winds at the city on the plains. That's why many people have found it a little unsettling that the city's news stations have shrugged off any attempt at standardization and decided to do their own thing when they talk about severe weather.

The first day of a two-part severe thunderstorm event is unfolding across the middle of the country, with an enhanced risk for severe weather—three on a scale from zero to five—possible in Oklahoma, Arkansas, and Missouri. Storms could produce very large hail, damaging winds, and a few tornadoes.

We've been lucky enough to see a lull in severe thunderstorms over the past couple of months, sparing countless towns from damage or destruction. Unfortunately, all good things have to come to an end. Here's a primer on how to use severe weather forecasts to keep you and your loved ones safe this spring.

Even though Friday was the official start to spring, severe weather season across the U.S. typically ramps up much earlier. This year, however, has been quiet. Extremely quiet. In fact, we're on track to see the quietest start to the year we've ever recorded. That's probably going to change pretty soon.

The droning wail of a tornado siren is ubiquitous in the southern and central parts of the United States. These loud sirens are meant to warn people who are outdoors that a tornado is on its way. Now that we're indoors or in a car for most of our lives, tornado sirens are all but useless, yet we keep wasting money on them.

In a normal year, the southern United States would see severe weather on a weekly basis by the end of February. But that's a normal year, and this is 2015. For better or worse, severe weather across the United States is at an all-time low since records began nearly half a century ago.

An outbreak of severe weather across the southeastern United States last week produced six tornadoes, one of which produced major damage in the small Mississippi town of Columbia. Within one of the many buildings destroyed by this tornado's 165 MPH winds was a man who caught the whole ordeal on video.

Two years ago today, a large EF-2 tornado tore through the center of Mobile, Alabama, causing significant damage and injuring several people. Aside from helping put to rest the myth that tornadoes can't hit cities, the storm came perilously close to being a disaster.

Just in time for Christmas, a developing storm will create headaches for anyone planning to travel east of the Mississippi River later this week. The storm will drop heavy snow on the Great Lakes and bring thunderstorms, heavy rain, and gusty winds to almost the entire East Coast. Merry Christmas!

A tornado watch is in effect for some major cities in the southeastern United States this afternoon, including the eastern suburbs of Atlanta, as well as Charlotte, Greenville, Columbia, and Asheville. Any storms that form in the watch area are capable of producing tornadoes.

As the days grow shorter and the weather turns colder, many people think they're in the clear and safe from tornadoes. However, the changing weather specifically makes us more vulnerable to tornadoes. Today's severe weather is a hard reminder that we're in the second peak of tornado season.

A dangerous multi-day severe weather outbreak is ramping up across the southern United States at this hour, with a powerful squall line stretching from St. Louis to the Gulf of Mexico. Millions of people are at risk for widespread wind damage, large hail, and even tornadoes.

A major wind event known as a "microburst" leveled thousands of trees in Easthampton, Massachusetts this morning. Microbursts can create more damage than a weak tornado, and they're responsible for many lethal airplane crashes. What is a microburst and how do they form?

Oh, October, you are a fickle month. After a beautiful weekend across much of the eastern two-thirds of the country, this week brings the wet remnants of a hurricane into the southwest and the risk of tornadoes to the Tennessee Valley this afternoon.

An incredibly long and impressive line of thunderstorms swept through the central United States on Thursday night, stretching more than 1,200 miles long at its largest extent. The storms left more than 300 of reports of damaging winds and large hail in its wake.

A widespread severe weather outbreak is taking shape across a large swath of the central United States this evening, stretching from Texas and Louisiana north through Illinois and Indiana. Nearly forty million people are at risk for damaging winds, large hail, and possibly a few tornadoes.

Well, here's something you don't see too often. The Storm Prediction Center has issued a slight risk for severe weather across parts of the desert southwest—including Las Vegas and surroundings—for the chance of tornadoes, 60+ MPH wind gusts, and hail larger than quarters.