Monday's live blog: Dangerous tornado outbreak developing

Today's live blog covers the potential for a major tornado outbreak across the southern and central Plains. Above is the live stream of what's happening right now in the heart of the high risk area.

The storm front will continue to move east across the high risk area, which includes Oklahoma City tonight. If you are anywhere in the severe thunderstorm risk, please use the WeatherRadar to monitor the storms progress through your area.

A strong supercell thunderstorm, with a "mothership" shape, was spotted by our storm chaser near Marshall, Okla. wind gusts in that area have been reported above 60 mph.

Sirens sounded in Hennessey, Okla., as a tornado-warned storm approached. The shelf cloud appeared dark against the deep blue of the storm's core. On the streets, residents looked up at the sky with concern.

A tornado is on the ground southeast of Okeene, Okla. Residents of Lacey, Bison, or Waukomis, Okla., need to take shelter now.

As storms head into the most unstable environment in Kansas and Oklahoma, the tornado threat will increase. Storms are just now moving into the high risk area.

Storms are developing now in central Kansas and western Oklahoma. Storms are expected to become more intense as they move east. Keep an eye on the WeatherRadar.

The WeatherRadar shows breaks in the cloud cover over Oklahoma and northern Texas. Sunshine will help further destabilize the atmosphere, something that will enhance any storms that develop in the next few hours.

A rare PDS tornado watch has been issued for portions of southern Kansas, western and central Oklahoma and western north Texas. A PDS watch is issued when strong, long-lived and violent tornadoes are possible.

With the potential for tornadoes happening after sunset, it's important to have multiple ways to get warnings. Nighttime tornadoes are twice as deadly as ones that happen during the daytime.

Here is the latest about the rare high risk on the ground with Weather & Radar's Jonathan Petramala.

The Weather & Radar task force has been activated. Here are the latest details:

Tornadoes, some strong and traveling long distances, are possible this afternoon and evening across the southern Plains. Confidence is high enough that the forecasters at the Storms Prediction Center have issued a high risk, level 5 out of 5, for central Oklahoma and south-central Kansas. The last day a high risk was issued in Oklahoma was May 20, 2019.

Here are more details on rare high risks and today's forecast: