File:Heat burst principle.jpg
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Captions
Captions
Heat Burst Basics
Summary
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| Description |
Français : Trois phases de la formation du coup de chaleur : un cumulonimbus atteint son stage mature sous un courant ascendant qui éventuellement cesse et finalement le courant descendant de haute altitude prend le dessus et réchauffe l'air des compression adiabatique
English: For a heat burst to occur, there needs to be both a dissipating thunderstorm and a hot, dry environment in the mid-levels of the atmosphere, combined with a shallow surface inversion. Thunderstorms develop when moist, unstable air is lifted upwards; the moisture in the cloud eventually condenses and later falls as precipitation. Once the thunderstorm loses its updraft, the thunderstorm is said to be downdraft dominated.
When this happens with a hot and dry atmospheric midlevel in place, the moisture associated with the downdraft evaporates and initially cools this layer, increasing its rate of descent toward the surface. The cooling ends once all the moisture has evaporated, thus causing warming and mixing of the warm (inversion) layer. The heat burst occurs once the warm and dry air descends to the surface. |
| Date | |
| Source | https://www.stmweather.com/blog/what-is-a-heat-burst |
| Author | National Weather Service |
Licensing
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This image is in the public domain because it was stored on the web servers of the U.S. National Weather Service. NWS-created images are automatically public domain in the U.S. since the NWS is a part of the U.S. government. However, the NWS sites also host non-NWS images which have been submitted by individuals: these are generally shown as "Courtesy of ...". Such images have explicitly been released to the public domain by the copyright owner as part of the upload process.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 15:43, 28 January 2023 | | 1,000 × 571 (125 KB) | Pierre cb (talk | contribs) | Uploaded a work by National Weather Service from https://www.stmweather.com/blog/what-is-a-heat-burst with UploadWizard |
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