Supercell Radars - Belgium
All radar from PA Weathercentre, with permission.

12:00

The area of SE Belgium, with nothing to report of significance on the radar at this time.

13:00

Small individual cells start to form north-west of high ground.

13:30

Numerous thunderstorm cells amalgamate to form one large cell.

13:45

One large thunderstorm now becomes established with anvil rainfall spreading upwind to the NW.
Rainfall rates depicted in black are >32mm/hr.

14:00

The main core of the storm increases and begins to elongate.

14:15

As radiating anvil stretches further NW, the core begins to split, with the southern cell maintaining a track
consistent with the north-westerly flow, but the upper cell beginning to "right-move" to the north.

14:30

The two cells now split completely, with the larger northern cell showing definite "right-movement" to the
north, 45 degrees to the main flow. Note the radiating anvil, and also the most eastern part of the larger
cell core....

14:45

The smaller cell now diminishes, but the right-moving cell starts to develop a well-defined hook-echo.

From this point, the storm amalgamated with more thunderstorms moving up from the south.

This cell produced flooding and large hail, with reported fatalities. The storm splitting, impressive right-
movment of the northern cell, and the development of a hook echo leaves no doubt that this Belgian storm
was an impressive European supercell.