A reversal the the USD on Tuesday has generated an pattern in GBP/USD that targets 1.57 but could be setting the stage for a larger breakdown.

The pair has slipped below key support at 1.5920 after getting rejected by the 200-day moving average at 1.6050.
The pair is currently at 1.5913 and if we see it close below 1.5920, it will be a definite sell signal with a target of 1.5703.
We talked about the importance of the 200-dma in GBP/USD in a post last week, noting that the GBP fell 6000 pips the last time it fell through the mark. We targetted 1.58 and now that is just 70 pips away.
On the hourly chart we have posted, you can also see a messy head-and-shoulders pattern, that has been mostly resolved but points to 1.6070 as a key short-term stop.
At the moment, it seems like the momentum is aligned for a test of 1.57. Taking a look at the daily chart affirms that conviction.

The first thing we notice when looking at the daily chart is the period of indecision over the past week. We see three clear doji stars followed by a hesitant candle upwards culminating in a clear rejection of the 200-dma and a massive 120 pip reversal.
We have often talked about our enthusiasm for doji star patterns and how they so often preceed a big, lasting move. With this chart we need only to look back two weeks. From Dec 9 – 16 we saw similar doji star patterns followed by a bounce to the 100-day moving average that was shot down in quick 400 pip fall.
The potential for something similar certainly exists here. the consolidation of the doji stars cleared out oversold conditions and foreshadows weakness.
The difference this time is that there is major support at 1.5708, which was the low on Oct. 13 and also the lowest since May. A close below this level would be a major blow for GBP and would target at least 1.50 with the potential for a retest of the 1.35 lows.