Storms could ruin outdoor activities across the Southeast, Missouri Valley and the Four Corners.
An unusually strong push of cool air for early September will move southward along the Atlantic Seaboard through the Labor Day weekend before July-like heat returns by next week.
There is a significant chance that Jimena will turn back toward Hawaii and threaten the islands during the second week of September.
As the 2015 college football season gets underway, summertime warmth could lead to uncomfortable games across the Ohio Valley and South while storms roll across the Southeast and Upper Midwest.
The Northwest and Southwest were targeted by gusty, damaging storms, while a rare tropical feat occurred in the Pacific.
Typhoons and building drought will impact more than one billion people in southeastern Asia this fall.
Steering winds could take Ignacio, currently a post-tropical cyclone, into the southeastern arm of Alaska or British Columbia during the middle days of next week.
Strong thunderstorms will roll across the Upper Midwest while rain and strong winds roar through the Northwest through Labor Day weekend.
While Tropical Storm Kevin will stay well away from Mexico, its moisture will still lead to an increase in showers and thunderstorms from Baja California to the Four Corners region of the United States.
President Barack Obama spent three days in Alaska this week trying to raise awareness of how climate change is impacting the everyday lives of Alaskans.
A team of researchers studied tree ring data and found that drought can set back the ability of trees to absorb carbon dioxide by as much as four years.
Yellowstone Nat'l Park, WY (1988)
Forest fires due to prolonged drought. 1.6 million acres were torched.
Maryville, MO (1898)
12-inch layer of hail. Lanes in fields were still closed 2 weeks later and ice cream was made from ice removed from the fields 4 weeks later.
Cedar Keys, FL (1930)
Hurricane did a double loop near Cedar Keys.