enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Tornado - Wikipedia

    en.wikipedia.org/wiki/Tornado

    Other tornado-like phenomena that exist in nature include the gustnado, dust devil, fire whirl, and steam devil. Tornadoes occur most frequently in North America (particularly in central and southeastern regions of the United States colloquially known as Tornado Alley; the United States has by far the most tornadoes of any country in the world ...

  3. Hook echo - Wikipedia

    en.wikipedia.org/wiki/Hook_echo

    Classic-style hook echo of the F5 1999 Bridge Creek-Moore tornado.. A hook echo is a pendant or hook-shaped weather radar signature as part of some supercell thunderstorms.It is found in the lower portions of a storm as air and precipitation flow into a mesocyclone, resulting in a curved feature of reflectivity.

  4. Civil defense siren - Wikipedia

    en.wikipedia.org/wiki/Civil_defense_siren

    Sound sample ⓘ A civil defense siren is a siren used to provide an emergency population warning to the general population of approaching danger. Initially designed to warn city dwellers of air raids (air-raid sirens) during World War II, they were later used to warn of nuclear attack and natural disasters, such as tornadoes (tornado sirens).

  5. 10 types of tornadoes that occur in the US - AOL

    www.aol.com/weather/10-types-tornadoes-occur-us...

    Tornadoes are some of the most extreme weather events on Earth, and just like snowflakes, no two tornadoes are the same. No matter their shape or size, every type of twister can be dangerous, with ...

  6. Tennessee tornado sirens failed to sound in storm that ... - AOL

    www.aol.com/tennessee-tornado-sirens-failed...

    Officials in Tennessee are facing questions after tornado sirens allegedly failed to sound to alert residents to the storm that killed six people.. Tornadoes and severe thunderstorms tore through ...

  7. Funnel cloud - Wikipedia

    en.wikipedia.org/wiki/Funnel_cloud

    On July 29, 2013, a cold-core funnel cloud touched down as an EF0 tornado in Ottawa, Ontario, Canada, causing extensive damage in the form of downed trees on a golf course. No advance weather watches or warnings were issued by Environment Canada, and the tornado was spawned from one of the few non-severe storm clouds moving through the area ...

  8. Warning sirens sound as multiple tornadoes touch down near ...

    www.aol.com/warning-sirens-sound-multiple...

    Warning sirens could be heard ringing out in downtown Chicago as multiple tornadoes touched down close to the city on Wednesday 12 July. The eerie sound could be heard in footage posted by Twitter ...

  9. Federal Signal Modulator - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Modulator

    The Modulators in Chicago's siren system formerly used to run on the Alternate Wail tone during tornado warnings in order to vary from emergency vehicle sirens. However, in O'Hare International Airport, instead of using the main UV Wail or Attack, they use an Eclipse 8 (possibly) sound card doing attack. Before that is the Westminster Chimes ...