WMO03866, Wight, St Catherine’s Point, Isle of Wight

Posted: September 5, 2012 by tchannon in Analysis, Surfacestation


WMO03866, Wight, St Catherine’s Point, Isle of Wight

50 34 32N 01 17 49W
Altitude 20 metres

Estimated Class undecided, range 2 – 4, problem wall and scrub. Note: screen not exactly as guessed, see comments, no material effect.

UHI, local hardstanding and buildings, wall, vegetation, distance, none, very exposed coastal location by the English/French Channel.


(c) Google and providers

Confirmation of the exact Stevenson screen location and height of the wall might help but interpretation of the WMO classification is needed.

The wind there is severe so the scrub won’t grow tall, no trees can grow as such.

I expected this one to be Class 1 but full exposure for a screen ought not to be a problem. Rain gauges are a different matter, there are though other enclosures, some presumably for navigation services.

  1. Caz says:

    Here’s a photo that shows the location of the screen.

    The wall is of varying height. Copyrighted

    St Catherines Point Lighthouse

  2. tchannon says:

    You a pilot too? 8)

    Well, that wall looks higher than the screen, naughty. Sure the prevailing is up the Channel from the west but there are hot and cold easterlies. Moreover a wall is radiatively seen, prevents the screen and ground seeing deep space temperature. I seem to recall this being shown significant simply from scrub being allowed to grow and raise the horizon someplace.