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  2. Hail cannon - Wikipedia

    en.wikipedia.org/wiki/Hail_cannon

    A hail cannon is a shock wave generator claimed to disrupt the formation of hailstones in the atmosphere. These devices frequently engender conflict between farmers and neighbors when used, [ 1 ] because they are loudly and repeatedly fired every 1 to 10 seconds while a storm is approaching and until it has passed through the area, yet there is ...

  3. Beijing Weather Modification Office - Wikipedia

    en.wikipedia.org/wiki/Beijing_Weather...

    The work of the Office is largely aimed at hail storm prevention or making rain to end droughts; they have also induced precipitation for purposes of firefighting or counteracting the effect of severe dust storms, as they did in the aftermath of one storm in April 2006 which dropped 300,000 tonnes of dust and sand on the city and was believed ...

  4. Cloud seeding - Wikipedia

    en.wikipedia.org/wiki/Cloud_seeding

    Each site protects an area of 10 sq. km, the density of the site clusters is such that at least 2 sites will be able to target a single hail cloud, initial detection of hail cloud formation to firing of the rockets is typically 7–10 minutes in its entire process with a view to seed the formation of much smaller hailstones, high in the ...

  5. Hierarchy of hazard controls - Wikipedia

    en.wikipedia.org/wiki/Hierarchy_of_hazard_controls

    Hierarchy of hazard control is a system used in industry to prioritize possible interventions to minimize or eliminate exposure to hazards. [ a ] It is a widely accepted system promoted by numerous safety organizations.

  6. Hail - Wikipedia

    en.wikipedia.org/wiki/Hail

    Any thunderstorm which produces hail that reaches the ground is known as a hailstorm. [5] An ice crystal with a diameter of >5 mm (0.20 in) is considered a hailstone . [ 4 ] Hailstones can grow to 15 cm (6 in) and weigh more than 0.5 kg (1.1 lb).

  7. What is graupel? How it is different from sleet or hail? - AOL

    www.aol.com/weather/difference-between-freezing...

    Hail is a chunk of ice that can fall during thunderstorms. Unlike snow, sleet, freezing rain, and graupel, which occur in colder weather, hail is most common in warm conditions, during spring and ...

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  9. List of costly or deadly hailstorms - Wikipedia

    en.wikipedia.org/wiki/List_of_costly_or_deadly...

    A storm system lasting over a week created severe hail and high wind damage, reaching from Minnesota to Texas to Virginia to New York. The Minneapolis metro area suffered especially, receiving hail damage to many buildings and vehicles. The total damage was estimated to be over $2.5 billion. [36] 13 June 2020 Calgary, Alberta, Canada