Hail lashes windows as storms hit U.S.

In Argyle, Texas, heavy rain could be seen lashing the swimming pool and adobe area of a house.

Drone video showed a timelapse of a brewing storm off the Atlantic Ocean, near Marathon, Florida.

Earlier on Sunday (October 10) Southwest Airlines Co cancelled at least 30% of its scheduled flights, a second straight day of heavy cancellations. Southwest declined to confirm the number of cancelled flights, saying only it had a significant amount over the weekend due to unfavorable weather in Florida that was compounded by air traffic control issues in the same region.