Cable has traded a 39 pip range thus far Tuesday; 1.2018-1.2057

1.2057 is also the high water-mark since Monday's one-month low of 1.2006

Drop to 1.2006 spurred by hawkish shift in Fed expectations nL1N34M1Y2

Fed chair Powell will speak at the Economic Club of Washington at 1740 GMT

GBP/USD could fall further if Powell is more hawkish than expected

UK house prices stabilise after four-month fall, Halifax says nL8N34N1KE