I was watching the GBPUSD this am. I am UK based, so times on chart below are GMT (1 min timescale):

I was looking at short trades around 9:15am (black circled area), then at 09:30 saw a huge rise with three green candles (red circled). If I was short at 09:20am I could have been wiped out - even with a stop loss, as it may not have been triggered in time?
Could this rise be due to an FX news announcement? If so, how would I keep out of the market in future to avoid these unpredictable times?
Thanks,
Alex