Severe thunderstorm warnings have been issued for this entire line of thunderstorms north of KC. Here is a Level III NEXRAD image from 10:00PM with the warned areas indicated by the red polygons:

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It's June! School's out and warm weather is in- 90 degrees and higher in the sun in most locations this week. But, when it's not warm and muggy thunderstorms seem to be popping up, and strong storms formed in JOCO earlier today prompting a severe thunderstorm warning and triggering some marginally severe hail near Olathe- along with some strong wind gusts and heavy rain. But, for tonight, there is a threat of some thunderstorms (possibly severe) in and around the KC area. Here's a view of the NEXRAD image from 9:15PM this evening:

Tomorrow's forecast is incredibly difficult- the front that is accompanying these severe thunderstorms will stall (and disintegrate) across the area tomorrow morning, and after some early thunderstorms, another 80-90 degree day is likely. By afternoon, the weakening stalled front may (will) provide a focus area for thunderstorm development. Wind shear numbers aren't looking great, but instability is looking rather extreme, and any variation in wind shear forecasts could really spike a severe weather forecast. For now, I'd say marginally severe hail and strong winds will be likely with any thunderstorms tomorrow afternoon. If some of the atmospheric wind profiles can pick up a little bit, we may see a higher severe hail threat, and maybe the potential for an isolated tornado or two in the region, but right now winds aren't looking very supportive of a tornado threat.
For the weekend, the jet stream will sag southward and set up a very strong upper level wind force above the KC area, and will allow any surface lows and disturbances to ride this very powerful stream across the area. So, any SFC lows that move towards the area from Saturday through next Wednesday will need to be watched very closely for an increased hail and tornado threat. By June 15th, the tornado threat for our area will be over, and the rest of the summer should be marked by classic summer thunderstorms. I'll keep this updated the next few days, but enjoy some comfortable weather in the shade, and keep an eye to the sky through tomorrow, and this weekend.
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