Waghorn wrote:
http://weather.uwyo.edu/cgi-bin/soun...000&STNM=03882

shows the warm,dry air in depth.Tropopause at ~170hPa, and thickness
565.
Does anybody know how unusual this is for early July?

David

The thickness is certainly well above average, but 565 dam is
not exceptional for this time of year. After all, temperatures above
30°C have been recorded in May and that cannot really occur with a
thickness of less than about the current figure.

Tudor Hughes, Warlingham, Surrey.