<a href="http://instagram.com/p/NxUVKmmabk/">Instagram user @lemieuxc</a> took this photo of a thunderstorm near Calgary, Alberta, Canada on Monday. A piece of energy from the storm system responsible for these clouds will help spark thunderstorms in Missouri today.
Thick heat and humidity in place from the nation's midsection to the Southeast will provide fuel for some more drenching thunderstorms today.
As a few potent upper-level disturbances pass through the heat, some of the storms could turn severe, especially across the lower Missouri and mid-Mississippi valleys, as well as a portion of the South.
Kansas City and St. Louis, Mo., Paducah, Ky., and Macon, Ga., are among the cities at higher risk for a gusty storm versus the rest of the Midwest and South, where scattered storms will be common.
Powerful wind gusts in excess of 50 mph and some hail will result from a few complexes of thunderstorms through early tonight. Vivid lightning and flooding downpours will be a staple in any storm as well.
It is plausible that one or two storms could rotate and spawn a tornado; however, the possibility of numerous twisters appears low.
Any tornado warning must be taken seriously and those warned should seek safe shelter regardless of whether a tornado is actually confirmed with the warning.

Even non-severe storms can be dangerous. Lightning injured four people on the beach in Wildwood Crest, N.J., on Wednesday.
Also on Wednesday, there were numerous reports of strong wind gusts and hail from southern Missouri to Virginia.
The storm system that pushed through the northern Plains slated to arrive in Missouri today also produced wind damage and hail from Colorado to Wisconsin.
Unfortunately, the northern Plains will have little time in between severe weather episodes as a multi-day outbreak is expected to take shape this evening over the Dakotas.
Meanwhile, the Northeast, plagued by several days of isolated but drenching storms will finally catch a break late this week as high pressure builds in from the west. This weekend, however, the storms will return.
Nearly the same setup for tornadoes that focused on Oklahoma Monday is targeting north central Texas Tuesday afternoon.
Severe storms, some capable of producing tornadoes, will threaten communities across northeastern Texas, northwestern Louisiana and Arkansas into Tuesday night.
The same storm system responsible for producing violent thunderstorms in Oklahoma recently will reach the Atlantic Seaboard Thursday.
While additional strong thunderstorms will roll through through portions of tornado-ravaged Oklahoma Tuesday, the risk of tornadoes has diminished.
The atmospheric severe weather engine began firing on all cylinders this past weekend and reached full speed Monday over Oklahoma.
Preliminary reports are calling it an EF-4 tornado that has caused numerous fatalities and injuries in Moore, Okla.
| Extreme | Location | |
|---|---|---|
| High | N/A | |
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Kansas City, KS (1957)
Forty-five people killed and millions of dollars
in damage by tornadoes.
Kansas City, KS (1957)
Forty-five people killed and millions of dollars
in damage by tornadoes.
Texas County, OK (1937)
Severe dust storm called "Black Blizzard" visibility
near zero for 10 minutes.
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