Hail is precipitation in the form of large balls or lumps of ice that grow in thunderstorms and other severe convective storms. More
How much water is in the atmosphere? Water is an exceptionally interesting chemical with many important implications for life on Earth
How much condensed liquid water is in a cubic mile of fog and clouds? Fog envelopes the Milwaukee Art Museum, on Lake Michigan’s
How long have satellites been used to study Earth’s weather? NASA image of Explorer VII satellite, 1964 The first successful
The probability of precipitation (fondly known as PoP) has been part of weather forecasts since the late 1960s, and is the only forecas More
When does tornado season start? June, 2004 tornado near Madison, WI by i am your hero Wisconsin has had tornadoes in every month of the
Will the 2010 volcanic eruption in Iceland lead to a change in global weather patterns? 2010 eruption of Eyjafjallajökull by Sverrir
When is the severe weather season?
How does fog form? Photo: NASA Fog is a cloud in contact with the ground. When the relative humidity approaches 100 percent, water
What are the different types of thunderstorms? A supercell thunderstorm over Chaparral, N.M., photographed by Greg Lundeen for NOAA
Is there a relationship between sun spots and climate? 12th century sunspot drawing, from NASA. Since the invention of the telescope in
What are those beams of light that emerge from clouds?
Does a waterspout over the ocean contain fresh or salt water? Waterspout photo from NOAA Photo Library A waterspout is a whirlwind that
What is space weather? Space weather describes the conditions in space that affect Earth and its technological systems. Space weather