And then

The heavens opened ..

Station closures on the northern line
Tooting Broadway
TOOTING BROADWAY STATION: Closed due to flooding.
Tooting Bec
TOOTING BEC STATION: Closed due to flooding.
Clapham Common
CLAPHAM COMMON STATION: Closed due to flooding.
Colliers Wood
COLLIERS WOOD STATION: Closed due to flooding.