In article
,
Weatherlawyer writes:
How common is this?
http://www.metoffice.gov.uk/weather/..._pressure.html
23 November 2011. The High over Greenland.

I had a look, but it's now the chart for the 24th. The "high" is still
there, but is now shown as 998mb. I think it's a case of a computer
algorithm getting over-enthusiastic, and labelling a very minor and
local peak as a "high". The main high pressure centre is well to the
west, as shown by the isobars. There's at least one other such
pseudo-high shown on the map, over Germany, and a pseudo-low just to the
west of Greenland.
--
John Hall
"The power of accurate observation is commonly called cynicism
by those who have not got it."
George Bernard Shaw