Expected loss in crash using market stop order

Hello,


I have this question in my head and I keep wondering about it.


If a strange abnormal movement occurs, e.g. a new flash crash, what is the loss you can expect when price runs through your market stoploss order?


I know it is offcourse impossible to give a sure answer for this, but I’m curious what ( amount of slippage) can be expected. Has anybody experienced this event or similar when he was in the market?


Attached is a chart showing eurusd of 6-9-2011. You can see the 3 and 1 min chart with a hypothetical short trade with attached stoploss ( market order). I cannot remember if the movement was triggered by scheduled news or “sudden” news, but the chart is just an example. The eurusd shot up about 160 points in less than 1 minute. I’m aware that position size must not be that large that a movement like this can wipe you out, but I’m wondering what kind of loss can be expected if such a movement occurs. In the chart the hypothetical stop order is set at 4120, will the order be executed at 4120- 4125, 4170, or even at 4280? I know sure things do not exist in trading, but has anybody experienced such an event or can provide some answers or experiences?