Active aurora band - 16.3.2023 at 00.05 - 16.3.2023 at 00.50 Hämeenkyrö Observation number 113452

Visibility III / V

Arttu Kangasperko

I guess I was a little late for the brightest moment. Faded for a while after the start, but got stronger again. Sometimes they changed their shape very quickly and the movement was clearly visible with the naked eye, but the colors were faint. Towards the end, they rose above half the sky, finally being covered behind a cloud cover.

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Additional information

Aurora brightness
- Bright auroras
Observed aurora forms
- Band
  
  Bands are usually narrower, more twisty at the bottom, brighter, and more active than arches. Bands usually develop from arches.
  
  Bands can form J and U shapes, sometimes even full spirals. The corona can also arise from bands. Bands are a fairly common form of aurora.
  
  Aurora band. Photo by Merja Ruotsalainen.
  
  Aurora band. Photo by Matias Takala.
  
  Aurora band. Photo by Lea Rahtu-Korpela.
  
  Aurora bands. Photo by Lauri Koivuluoma.
  
  Aurora band. Photo by Matias Takala.

Colors with unaided eye and other features
- Green auroras
  
  Green, seen with the naked eye, is one the most common colors of the aurora. The green color is derived from atomic oxygen.
  
  Green auroras. Lea Rahtu-Korpela.
  
  Green auroras. Photo by Juha Ojanperä.

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Active aurora band - 16.3.2023 at 00.05 - 16.3.2023 at 00.50 Hämeenkyrö Observation number 113452