An "Extreme Supermoon," the unofficial term given to a full moon when it is at its closest point to the Earth, was visible for many the night of June 22. The moon does not rotate around the Earth in a perfect circle; the elliptical orbit brings the moon to a point where it is closer than others (its perigee), and then shortly after it will reach its farthest point (apogee). When the moon is full at 100 percent of its apogee, we get the "Extreme Supermoon," verus just a Supermoon, which can occur 90 percent or more of its perigee. According to AccuWeather's Mark Paquette, there are typically a few Supermoons each year, but an Extreme Supermoon comes every 13 to 14 months. The next Extreme Supermoon will occur August 2014.
Photo taken in Ohio by Tracy Evans.
Photo taken in Tucson, Ariz., by Alexandre Morot.
Photo taken in Harford County, Md., by Mike Laslo.
Photo taken in Pennsauken, N.J., by James Barton.
Photo taken in Massachusetts by Jacob Baker
Photo taken in Delaware, Ohio, by Ben Baldwin
Photo taken in Dublin, Ireland, by Anthony Lynch
Photo taken in Montana by Steve Austin
Photo taken in Cajon Pass, Calif., by Anne Collier
A developing tropical storm, moving just north of the large islands of the Caribbean, will take aim at the Bahamas and southern Florida into this weekend.
Regions dealing with Zika-carrying mosquitoes could have another threat to monitor as tropical activity picks up this season.
Following a tropical storm threat in the Bahamas and Florida into this weekend, an uptick in tropical systems will continue for the next six to eight weeks.
On the heels of deadly Typhoon Mindulle, Japan is bracing for another threat from Typhoon Lionrock next week.
A deadly earthquake struck central Italy at 3:36 a.m. local time on Wednesday with tremors felt as far away as the capital city of Rome.
Stargazers will want to dig out their binoculars and telescopes this weekend as Venus and Jupiter shine so close that they appear as one large, bright star in the evening sky.
Lake Okeechobee, FL (1949)
Hurricane sends 155-mph winds against levees but the disaster of 1928, when the levees broke, was not repeated.
Kiana, AK (1976)
A weak tornado occurred, about 2.9 miles north of the Arctic Circle.
Elizabeth, PA (1979)
A heavy thunderstorm at Elizabeth, PA, 20 miles SE of Pittsburgh, tore the roof off an apartment building and downed about 100 trees. Trees were also knocked over at McKeesport, PA.