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.
Hurricane Guillermo will continue its path towards Hawaii in the coming days bringing large swells and enhanced rainfall to the islands.
Cooler conditions will move into the Interior Northeast early this week, but the warmth will hold on a little longer along the Interstate-95 corridor.
After a very hot end to July, some relief is on the way this week for Seattle and other areas of the Northwest.
After months of below-normal rainfall, Santiago, Chile, could finally receive several days of rainfall this week.
One person is dead and multiple people are injured after a tent collapsed during a thunderstorm at a festival in suburban Chicago, the Chicago Tribune reports.
Typhoon Soudelor in the western Pacific Ocean will continue to strengthen over the coming days, eventually threatening Taiwan, eastern China.
Waterville, NY (2007)
Thunderstorm winds blew large, heavy and bolted down sheds 500 feet onto the roadway.
Philadelphia, PA/ Camden, NJ (1885)
Tornado struck, cutting an 8 mile path, crossed river near present day Walt Whitman Bridge; 5 killed, $500,000 damage. Total of 13 tornadoes within 100 miles of Philadelphia. Street flooding and flooding of homes.
Philadelphia, PA (1898)
Record rainfalls - 2.24" in 30 minutes, 3.81" in one hour, 5.48" in two hours; storm total 5.89".