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Beast
Lv 7
Beast asked in Science & MathematicsWeather · 4 years ago

How can a tornado watch be issued when the sky is blue? Can radar or satellites see conditions forming before they're visible to us?

Update:

Can meteorologists tell by the size and strength of approaching fronts? How do they know when isolated tornadoes will briefly touch down or when a major outbreak is expected with violent and long-lived tornadoes?

5 Answers

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  • MikeTL
    Lv 6
    4 years ago
    Favorite Answer

    A watch means that the possibility exists. A warning means that a tornado has been spotted and is imminent. Watches can last for several hours, so while it might be blue sky now, it won't be for long. And yes, radar and satellites can see storms forming before they form.

  • Kuba
    Lv 5
    4 years ago

    A tornado watch covers a large-enough area that most areas in a tornado watch usually has clear skies overhead. Back in the day, they would issue them well before thunderstorm initiation occurred... nowadays they seem to wait until there's at least some thunderstorm activity ramping up.

    Even tornado warnings can be issued with blue skies overhead. When it comes to thunderstorms and especially supercells, there might not be a single cloud within miles of the actual thunderstorm, as subsidence immediately around the storm inhibits further cloud formation.

    • TQ
      Lv 7
      4 years agoReport

      " ... subsidence immediately around the storm inhibits further cloud formation." [sic] The subsidence is not large enough to effectively inhibit cloud formation over a wide area. Keep studying extensiveness!

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  • 4 years ago

    Small tornado's are circular winds on the ground, only large Tornado's come from certain clouds in the sky. The tail of it feeds it's circular spin as it drops down & travel's & an Organization found 4 smaller UFO'S enlarging Tornado's. Mike

    Source(s): Living & watching tornado's form on the ground +
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  • TQ
    Lv 7
    4 years ago

    Radar and satellites see upstream weather advancing on an area.

    Meteorologists use observations ... computer models ... and applied research to analyze whether conditions are favorable for tornadoes to touch down briefly or be long-lived. If conditions are considered favorable ... a watch will be issued.

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    Ever notice how some answers receive multiple TUs within seconds of posting? Ever wonder why some loser Members (10 suspended accounts) are so insecure in their answers they have to game the system?

    Here's your proof.

    All suspended for repeatedly violating Community Guidelines and TOS.

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    Source(s): National Weather Service
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  • 🌪
    Lv 6
    4 years ago

    A tornado watch simply means that atmospheric conditions could be favorable for tornadoes to occur. Meteorologists use many different resources such as weather data collected by weather balloons, weather models, and satellites.

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    Ever notice how some people who answer questions here make accusations against others but never offer any proof?

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    Still no proof of the accusation of "Ever notice how some answers receive multiple TUs within seconds of posting? ".

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