© Frank Le Blancq

Noirmont Common, St Brelade, Jersey

Latitude: 49° 10' 23'' N

Longitude: 2° 10' 6'' W

11 December 2016 1413 (Local Time)
Camera direction: towards N

Image P/S code: P.11.4.1

Image I.D.: 5470

• Images & related info Other Images Images of 1987 edition
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  Deposit of fog droplets

  The photograph shows a spider’s web hanging vertically on a gorse bush. A thick advection fog had enveloped the area for several hours with a visibility of around 100 m. A light breeze of about 5 kt was blowing from behind the photographer, which brought fog droplets into contact with the web, to which they adhered. With time, as further droplets passed through the web, some coalesced to create larger droplets; hence, a variety of sizes are visible. The largest is near the centre of the image, but just above it we see a string of much smaller droplets. Surface tension keeps them spherical.

  Fog forms when water vapour saturates and condenses into tiny liquid water droplets suspended in the air. Fog droplets are very small, typically having a mean diameter of 10 to 15 μm (1 μm = 1/1000 mm), compared with 100 μm for a drizzle drop.

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  © Frank Le Blancq
  Noirmont Common, St Brelade, Jersey
  Latitude: 49° 10' 23'' N
  Longitude: 2° 10' 6'' W
  11 December 2016 1413 (Local Time)
  
  
  Camera direction: towards N
  Image P/S code: P.11.4.1
  Image I.D.: 5470
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  At 1200 UTC, a ridge of high pressure covered the English Channel, including the Channel Islands where the image was taken. Light winds, a moist boundary and short daylight hours allowed fog to form.  

  © Crown Copyright
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  The 1500 UTC satellite image shows low cloud and fog west of the Normandy coast and north of the Brittany coast in France, over the Gulf of St. Malo. Fog covered the small island of Jersey at that time.

  © Credit NASA
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  Deposit of fog droplets

  Deposit of fog droplets on a spider's web after a foggy night

  Links in the image description will highlight features on the image. Mouse over the features for more detail.

  © Matthew Clark
  Tiverton, England, United Kingdom of Great Britain and Northern Ireland
  Latitude: 50° 53' 21'' N
  Longitude: 3° 28' 2'' W
  03 October 2015 0900 (Local Time)
  
  
  Camera direction: towards SE
  Image P/S code: S.11.4.1
  Image I.D.: 5016