It may have been predictable that West Germany would beat England on penalties in the 1990 World Cup semi-final; but could anyone have foreseen that the power surge afterwards, as a nation drowned its sorrows in tea, would kick demand upwards by the equivalent of two-and-a-half nuclear power stations?
I remember another instance similar to this, but what it was is that the forecaster's had forgotten to take into account the popularity of a particular TV program, when the commercial brake came on, "
yep you guessed it" power surge time, with lights dimming all over the place as the kettles were all being put on at the same time.