North Pacific High

Short description: Weather phenomenon off the California coast

The North Pacific High is a semi-permanent, subtropical anticyclone located in the northeastern portion of the Pacific Ocean, located northeast of Hawaii and west of California . It is part of the great belt of anticyclones known as the subtropical ridge. It is strongest during the northern hemisphere summer and shifts towards the equator during the winter, when the Aleutian Low becomes more active. It is responsible for California's typically dry summer and fall and typically wet winter and spring, as well as Hawaii's year-round trade winds.[1][2]

During the 2011–2017 California drought, the North Pacific High persisted longer than usual, due to a mass of warm water in the Pacific Ocean, resulting in the Ridiculously Resilient Ridge. This significantly limited the number of powerful winter storms that were able to reach California , resulting in historic drought conditions in that state for several years.[3][4]

## See also

* South Pacific High
* North Pacific Current
* California Current
* El Niño–Southern Oscillation

## References

1. ↑ "Semi-Permanent Highs and Lows". North Carolina Climate Office. https://climate.ncsu.edu/edu/HighLow.
2. ↑ "North Pacific High". NOAA. https://forecast.weather.gov/glossary.php?word=north+pacific+high.
3. ↑ "The Extraordinary California Drought of 2013/14: Character, Context, and the Role of Climate Change". http://www2.ametsoc.org/ams/assets/File/publications/BAMS_EEE_2013_Full_Report.pdf.
4. ↑ Bond, Nicholas A.; Cronin, Meghan F.; Freeland, Howard; Mantua, Nathan (2015). "Causes and impacts of the 2014 warm anomaly in the NE Pacific" (in en). Geophysical Research Letters 42 (9): 3414–3420. doi:10.1002/2015GL063306. ISSN 1944-8007. Bibcode: 2015GeoRL..42.3414B.

## External links

* "Avoiding the Pacific high". Ocean Navigator. 1 January 2003. http://www.oceannavigator.com/January-February-2003/Avoiding-the-Pacific-high/.
* Kern E. Kenyon (April 1999). "North Pacific High: an hypothesis". Atmospheric Research 51 (1): 15-34. doi:10.1016/s0169-8095(98)00110-0. Bibcode: 1999AtmRe..51...15K.

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Anticyclone|

| Northern Hemisphere|

* North Polar High
* Siberian High
* Azores High
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* North Pacific High
* Ridiculously Resilient Ridge
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Southern Hemisphere|

* South Polar High
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