Relative Humidity 700 hPa 19-23 December 2006

19 Dec 2006/00 UTC
Meteosat 8 Night Microphysical RGB; Relative Humidity 700 hPa blue solid: 70% or above, blue dashed: below 70%).

The mid-tropospheric humidity remained low over the the British Isles, typical for winter-time radiation fog.