Overcast

In today's article we are going to delve into the exciting world of Overcast. Whether we are talking about the history of Overcast, its impacts on today's society, the technological advances related to Overcast, or any other relevant aspect, this topic is undoubtedly of general interest. Therefore, in the next lines we will delve into its origins, evolution and the role that Overcast plays today. In addition, we will explore different perspectives and opinions on Overcast, with the aim of providing a holistic and enriching vision on this topic. Get ready to immerse yourself in an informative journey about Overcast!

For other uses, see Overcast (disambiguation).
A completely overcast sky in Mehamn, Norway.

Overcast or overcast weather, as defined by the World Meteorological Organization, is the meteorological condition of clouds obscuring at least 95% of the sky.[1] However, the total cloud cover must not be entirely due to obscuring phenomena near the surface, such as fog.[2]

Overcast, written as "OVC" in the METAR observation, is reported when the cloud cover is observed to equal eight oktas (eighths).[1][3] An overcast sky may be explicitly identified as thin (mostly transparent), but otherwise considered opaque—which always constitutes a ceiling in aviation meteorology.[2]

Sometimes clouds can be of different colors such as black or white, but overcast usually refers to darker skies.[4] In some cases, it can be characterized by almost zero distinction of borders of clouds. Or the sky may be covered by a single type of cloud, such as stratus, turning the whole sky into a dull white color.

Periods of overcast weather can range from a few hours to several days. Overcast weather can also affect people suffering from seasonal affective disorder.

The same weather when observed from above may be referred to as undercast, generally by pilots reporting in-flight weather conditions.[5]

See also

Wikimedia Commons has media related to Overcast.
Look up overcast in Wiktionary, the free dictionary.

References

  1. ^ a b "Aerodrome Weather Report" (PDF). World Meteorological Organization. Archived from the original on 24 February 2012. Retrieved 30 August 2016.{{cite web}}: CS1 maint: bot: original URL status unknown (link)
  2. ^ a b "Overcast". American Meteorological Society. Retrieved 30 August 2016.
  3. ^ World Meteorological Organization. "Overcast". Eumetcal. Archived from the original on 24 September 2016. Retrieved 30 August 2016.
  4. ^ Oxford English Dictionary, 3rd ed. (website), s.v. “overcast," 2a and 2b. http://www.oed.com/view/Entry/134377#eid32922408 (Accessed September 7, 2016).
  5. ^ "Undercast". American Meteorological Society. Retrieved 30 August 2016.


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