How much can spread increase from the norm?

Yesterday on a daily GBPNZD sell trade I was stopped out 13 pips below my SL. The spread had been around 5 pips. Is jumping up to 13 normal?

During major news or thin liquidity the spread could be ridiculous but if it has happened in normal trading hours with no major news then probably yr broker is hunting you.

Yep it happens. I’ve seen spreads on eurusd expand to 9+ pips around news time.