Hail Storm
10 Mar 2011



Hail Storm


These two pictures show an intense hail storm which deposited large hail stones up to 3cm across on areas of western Reading during the afternoon of 10th July 1995. The top view is of the rain intensity with very strong echoes at 39 km distance from the radar, where the largest hail fell. The top of the storm is at 13 km height; here, and in the anvil between 50 and 60 km, the radar echoes come from very small ice crystals.

The bottom view shows the polarisation properties of the echoes, illustrating clearly the change from dry ice in the cold upper regions of the storm, to wet ice and rain in the warm lower regions.

Radar scan through a hail storm.

Contact: Hooper, David (STFC,RAL,RALSP)