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squall
- Definição1
- A strong wind characterized by a sudden onset, a duration of the order of minutes, and then a rather sudden decrease in speed.
- Fonte1
- AMERICAN METEOROLOGICAL SOCIETY. Glossary of meteorology. [S.l., última modificação 05 oct. 2015]. Disponível em: < http://glossary.ametsoc.org/wiki/Main_Page >. Acesso em: 20 jun. 2022.
- Definição2
- Atmospheric phenomenon characterized by an abrupt and large increase of wind speed with a duration of the order of minutes which diminishes rather suddenly. It is often accompanied by showers or thunderstorms.
- Fonte2
- WORLD METEOROLOGICAL ORGANIZATION. International meteorological vocabulary. 2nd ed. Geneva, 1992. (WMO, n.182). Disponível em: < https://library.wmo.int/index.php?lvl=notice_display&id=220#.XeauGOhKiUk >. Acesso em: 11 dez. 2019.
- Fonte3
- WORLD METEOROLOGICAL ORGANIZATION. Guide to meteorological instruments and methods of observation. 7th ed. Geneva, 2006. (WMO, n.8).
- Fonte4
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Circular 69: aircraft accident digest n.13. Montreal, 1963. (Cir. 69-AN/61)
- Nota adicional1
- Acronym in English: SQ.
- Nota adicional2
- In U.S. observational practice, a squall is reported only if a wind speed of 16 knots or higher is sustained for at least two minutes (thereby distinguishing it from a gust).
- Nota adicional3
- In nautical use, a severe local storm considered as a whole, that is, winds and cloud mass and (if any) precipitation, thunder and lightning.
- Nota adicional4
- Squalls are frequently associated with the passage of cold fronts. In such circumstances, they occur in a line and are accompanied, typically, by a sharp fall of temperature, veer of wind, a rise in relative humidity, and a roll-shaped cloud with horizontal axis (line squall).
- Contexto
- Furthermore, the engineer aboard the aircraft stated that the airspeed indicator suddenly fell from 118 to 85 when the aircraft entered the squall.
- Subárea
- Aeronautical Meteorology
- Related Term
- line squall
- squall line
- squally weather
- Spanish
- turbonada