Frozen Missiles Falling From on High

Icicles can be pretty to look at, but can pose a real danger. They're formed when warming daytime temperatures cause snow on roofs or other surfaces to slowly melt and drip down, only to then refreeze as temperatures lower. They keep growing until they are knocked down. They fall unpredictably, which can make the ma real hazard.

Large falling icicles are like frozen missiles. They can shatter car windshields, cause damage to your homes, or even injure or a kill someone walking beneath them.

More Weather Glossary

  • Hoar Frost

    After a cold, clear winter night without much wind, the ground and nearby tree branches may be covered by tiny, white ice crystals.

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This Day In Weather History

Vostok, Wilkes Land, Antarctic a (1960)
About 1,176 kilometers from the Indian Ocean, the mercury fell to minus 127 degrees F (minus 88C). This was the lowest recorded temperature ever on the face of the earth, until July 21, 1983, when the temperature reached minus 128.6 degrees at the same location.

Montana (1979)
A thunderstorm passed through Livingston, MT, near Bozeman, dumping 2.5 inches of rain in 1 hour. Small roads in central mountain areas were washed out and the interstate highway was under water.

North Dakota (1991)
Huge hail caused severe damage in eastern North Dakota. Some hail was as large as six inches in diameter. Holes were punched in roofs and 16,000 acres of crops were destroyed.

Rough Weather