One storage site has reached a level where it is has less than 2 days withdrawal remaining at full production rates and has therefore been removed from the GBA Trigger Calculation. 

The GBA Trigger Level now stands at 447.5mcm and the Non Storage Supply element of the GBA Trigger Level also remains under constant review.

 
Further information on Gas Balancing Alerts can be found here: http://www.nationalgrid.com/uk/Gas/Data/GBA/