Alaska, USA --- Pink cumulus clouds float in serene blue sky at sunset in the fall over Alaska Peninsula, in Alaska. --- Image by © Momatiuk - Eastcott/Corbis
Chile --- Original caption: Beautiful cumulus and parallel bands of autocumulus clouds in blue sky near Lago del Toro, fall, Patagonia, Magellanes region, Chile --- Image by © Momatiuk - Eastcott/Corbis
Cumulonimbus clouds and blue sky over the sea
Otsu, Japan --- Blue sky with clouds --- Image by © Hiroko Yamaguchi/Corbis
June 17, 2013 - Panoramic view of a retreating thunderstorm in Alberta, Canada. The storm shows mammatocumulus clouds and virga from falling rain. The waxing quarter moon is at right.
700-02315970 © Zoran Milich Model Release: No Property Release: No Dark Clouds Moving In Over Blue Sky
29 Aug 2011 --- Convective cumulus clouds over the Amazon in Brasil. Two towers are starting to form anvils. --- Image by © Ralph Clevenger/Corbis
April 1998 --- Fluffy Clouds in Fair Weather Sky --- Image by © Joseph Sohm; Visions of America/CORBIS
Rain Cloud Covering Sunlight --- Image by © Corbis
Original caption: A turbulent sky appears on the reverse side of a shelf cloud as this severe thunderstorm nears Goodland, Kansas. --- Image by © Jim Reed/Science Faction/Corbis
Japan --- Cumulonimbus clouds in sky --- Image by © ASO FUJITA/amanaimagesRF/amanaimages/Corbis
Japan --- Cumulonimbus cloud and sky, Kanagawa Prefecture, Honshu, Japan --- Image by © amanaimages/Corbis
23 Aug 2012, Glen Canyon National Recreation Area, USA, USA, USA --- Towering storm clouds block my exit as I leave a remote area of Lake Powell in the middle of monsoon season. The problem with the dirt roads in the area is that they turn into an impassable goo when wet. It doesn't matter if you have all-wheel drive, 4-wheel drive or a sherman tank - you will get stuck. I made it out about 2 hours before the roads were washed out. --- Image by © Doug Meek/Corbis
19 Jun 2011, Nebraska, USA --- An amazing supercell tracks across southern Nebraska, producing other-worldy storm structures. At times this storm looked like a giant tsunami in the sky. The supercell formed after two supercells merged near McCook Nebraska. It then tracked eastward as one storm till it died after midnight east of Hastings Nebraska. --- Image by © Mike Hollingshead/Corbis
23 Jul 2013, Furano, Japan --- Sky of clouds, Furano, Hokkaido Prefecture, Japan --- Image by © Keren Su/Corbis
700-02315971 © Zoran Milich Model Release: No Property Release: No Dark Clouds Moving In Over Blue Sky
23 Sep 2010, Sierra Leone --- Cloud iridescence forming above a cumulonimbus cloud, caused by light refraction through individual water droplets and ice crystals at high altitude, Sierra Leone. --- Image by © Felicity Lanchester/Nature Picture Library/Corbis
Stratocumulus Rain Clouds --- Image by © Corbis
31 May 1999, Liberal, Kansas, USA --- Large Cumulonimbus Developing --- Image by © Tom Bean/CORBIS
Cumulonimbus Clouds From an Airplane --- Image by © Seth Resnick/Science Faction/Corbis