On 2 June, 22:23, wrote:
How come this time there are no thunderstorms? Usually when the air changes
from hot air to cold air there are?

http://www.metcheck.com/V40/UK/HOME/

The front was a kata cold front as it travelled through the high
pressure this provides sink above the frount limiting developement.
There was a small chance that ahead of the front some potential
instability could have been released. I noticed the peaks a pennines
developed some faily large cu for a time around the middle of the day
but no CB. What we really need to trigger the storms would be to get
the thickness of 564dm to move over the uk.

Simon (South Yorks)