1. Description

2. Examples

3. See also

4. References

5. External links

An anticyclonic storm is a weather storm where winds around the storm flow in the direction opposite to that of the flow about a region of low pressure.

Description

In the Northern Hemisphere, anticyclonic storms involve clockwise wind flow; in the Southern Hemisphere, they involve counterclockwise wind flow.

Anticyclonic storms usually form around high-pressure systems. These do not "contradict" the Coriolis effect; it predicts such anticyclonic flow about high-pressure regions. Anticyclonic storms, as high-pressure systems, usually accompany cold weather and are frequently a factor in large snowstorms. Jupiter's Great Red Spot is a well-known non-terrestrial example of an anticyclonic system.

Anticyclonic tornadoes often occur;^[1] while tornadoes' vortices are low-pressure regions, this occurs because tornadoes occur on a small enough scale such that the Coriolis effect is negligible.

Examples

• 25 February 2018 – 4 March: Hartmut, an exceptionally strong anticyclone whose winds peaked at 187 km/h (116 mph) and whose central pressure peaked at 1056 hPa, both in Scandinavia. This anticyclonic storm with hurricane-force maximum gusts channeled freezing air from a Siberian airmass all over Europe, triggering the Beast from the East, a deadly cold wave with historical significance. Having dropped large amounts of snow in some European areas, Hartmut was a rare instance of an "anticyclonic blizzard". The interaction of Anticyclone Hartmut and Cyclone Emma intensified the wind and snowfall threat in Western Europe, particularly on the British Isles.

See also

• Anticyclonic tornado

References

External links

• https://www.sciencedaily.com/videos/2008/1108-jupiters_little_red_spot.htm Science Video: Jupiter's Little Red Spot Planetary Scientists Detect Strong Winds In Anticyclone On Jupiter. Article/video date: November 1, 2008.

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